DIAMOND DRILLING RPT BALMER BATEMAN TWPS

Assessment Report 2005 Adams Lake Area Winter Drill Program Summary

Rubicon Minerals Corp. I Goldcorp Inc.

Balmer and Bateman Townships Red Lake Mining District

Northwestern Ontario

Prepared for

Rubicon Minerals Corporation 1540-800 West Pender Street

Vancouver, RC. V6C2V6

By

Terry Bursey, P. Geol. 2791 West 15th Ave

Vancouver, Be V6K2Z7

April 25, 2005

1

1. INTRODUCTION This report is prepared to summarize exploration work performed by Rubicon Minerals Corporation on the Adams Lake property being submitted to the Ministry of North em Development and Mines for assessment credit. Expenditures of$91,428 are being submitted for assessment credit incurred for two drill holes totaling 612.1 metres, drilled between March 16,2005 and March 23,2005. Core logging was performed by Rubicon geologist Crystal Hoffe and work was supervised by Rubicon geologist Terry Bursey.

2. PROPERTY DESCRIPTION, LOCATION AND ACCESS The Adams Lake Property is located in the Bateman and Balmer Townships within the Red Lake Mining Division, Ontario fourteen kilometres east northeast of the town of Red Lake (Figure 1). The property consists of 34 mining claims, totaling 224 units (Table 1) and is accessible by truck via logging roads from Nungesser Road. Claims are under option to Goldcorp Inc.

Table 1. Mining claims summary, Adams Lake Claims

Claim Number Units Township Recording Date Due Date KRL 1234561 10 BATEMAN 26/01/2001 26/01/2006

KRL 1234301 1 . BATEMAN 21/03/2003 21/03/2006

KRL 1234302 1 BATEMAN 21/03/2003 21/03/2006

KRL 1234303 1 BATEMAN 21/03/2003 21/03/2006

KRL 1184235 13 BATEMAN 27/04/1995 27/04/2005

KRL 1184236 11 BATEMAN 27/04/1995 27/04/2005

KRL 1248360 4 BALMER 23/07/2002 . 23/07/2005

KRL 1244544 2 BALMER 23/07/2002 23/07/2005

KRL 1244577 2 BALMER 23/07/2002 23/07/2005

KRL 1248321 2 BALMER 23/07/2002 23/07/2005

KRL 1248325 2 BALMER 23/07/2002 23/07/2005

KRL 1244557 3 BALMER 23/07/2002 23/07/2005

KRL 1248359 4 BALMER 23/07/2002 23/07/2005

KRL 1248326 4 BALMER 23/07/2002 23/07/2005

KRL 1248356 6 BALMER 23/07/2002 23/07/2005

KRL 1184361 1 BATEMAN 30/10/1995 30/10/2005 KRL 1234545 2 BATEMAN 15/11/2000 15/11/2005

KRL 1234546 4 BATEMAN 15/11/2000 15/11/2005

KRL 1233205 16 . BALMER 27/11/1998 27/11/2005 KRL 1233204 16 BALMER 27/11/1998 i 27/11/2005 KRL 1233000 15 BALMER 27/11/1998 27/11/2005 KRL 1233203 13 BALMER 27/11/1998 27/11/2005 KRL 1233207 4 BALMER 27/11/1998 27/11/2005 KRL 1233427 15 BATEMAN 27/11/1998 27/11/2005 KRL 1233201 6· BALMER 27/11/1998 27/11/2005 KRL 1233206 16 BALMER 27/11/1998 27/11/2005 KRL 1233202 1 BALMER 27/11/1998 27/11/2005

2

KRL 1247977 2 BATEMAN 03/12/2001 03/12/2005 KRL 1247979 2 BATEMAN 03/12/2001 . 03/12/2005 KRL 1247980 6 BATEMAN 03/1212001 03/12/2005 KRL 1249503 11 BATEMAN 03/12/2001 03/12/2005 KRL 1247978 2 BATEMAN 06/12/2001 06/12/2005 KRL 1234047 10 BATEMAN 11/03/1999 11/03/2006 KRL 1234048 16 BATEMAN 11/03/1999 11/03/2006

3. EXPLORATION WORK PERFORMED The Adams Lake property is underlain by rocks of the Red Lake Greenstone Belt. Primary geology c(:)llsists of mafic to intermediate metavolcanics with minor ultramafic, felsic, iron formation and diorite rocks. Exploration targets include mafic and ultramafics of the Balmer stratigraphy.

A total of 312.1 metres were drilled, on claims 1247979, 1247980 and 1184325 (Table 2).

Table 2: Adams Lake Proj)erty Drill Hole Locations Length I

I Claim Hole id North East (m) Az Dip Start date End date I AL-05-07 5666121 452033 303.1 110 -50 17-Mar-05 20-Mar-05 I 1247979 I AL-05-08 5665400 451837 i 309 110 -50 20-Mar-05 22-Mar-05 I 1184235, 1247980 J

3

~

'" ~

,

~:.~. , ' ,

, ., I

+

+ HEYSON TWP +

0- - -- 1-- - - - - - - - - - - - -.- -- - I - - - --440000 445000 ..

EiYSHE TWP

I + --4

+

I - - - - - - - - - - - - r .. - -0 - - - - -- - - - - - - - -r - -J ---

450000 455000

Figure 1: Adams Lake Property Location Map.

WlllAffs TWP

I~ I

~

~

'" ..

, 0

,-~

'" .., '" on

--·------- 1----- ---- --- -0 430000

4

BIBLIOGRAPHY

Andrews, A.J., Hugon, H., Durocher, M., Corfu, F., and Lavigne, M., 1986. The anatomy of a gold-bearing greenstone belt: Red Lake, northwestern Ontario; in Proceedings of GOLD '86, an International Symposium on the Geology of Gold Deposits, (ed.) A.J. MacDonald; Konsult International Inc., Toronto, Ontario, p. 3-22

Corfu, F., Davis, D.W., Stone, D., and Moore, M., 1998. Chronostratigraphic constraints on the genesis of Archean greenstone belts, northwestern Superior Province, Ontario, Canada; Precambrian Research, v. 92, p. 277-295.

Corfu, F., and Andrews, A.J., 1987. Geochronological constraints on the timing of magmatism, deformation and gold mineralization in the Red Lake greenstone belt, northwestern Ontario; Canadian Journal of Earth Sciences, v. 24, p. 1301-1320.

Corfu, F., and Wallace, H, 1986. U -Pb zircon ages for magmatism in the Red Lake greenstone belt, northwestern Ontario; Canadian Journal of Earth Sciences, v. 23, p.27-42.

Dube, B., Williamson, K, and Malo, M., 2002. Geology of the Goldcorp Inc. High grade zone, Red Lake mine, Ontario: an update; Geological Survey of Canada, Current Research 2002-C26, 13 p.

Dube, B., Williamson, K, and Malo, M., 2001. Preliminary report on the geology and controlling parameters of the Goldcorp Inc. High Grade zone, Red Lake mine, Ontario; Geological Survey of Canada, Current Research 200I-CI8, 33 p.

Dube, B., Balmer, W., Sanborn-Barrie, M., Skulski, T., and Parker, J., 2000. A preliminary report on amphibolite-facies, disseminated-replacement-style mineralization at the Madsen gold mine, Red Lake, Ontario; Geological Survey of Canada, Current Research 2000-C17, 12 p.

Durocher, M.E., Burchell, P., and Andrews, A.J., 1987. Gold occurrences, prospects, and deposits of the Red Lake area; Ontario Geological Survey, Open File Report 5558, v. I & 2, 704 p.

Horwood, 1945. Geology and Mineral Deposits of the Red Lake Area, ODM Annual Report,VoL 49, Part II, pp. 72-74.

Pirie, J., 1982. Regional geological setting of gold deposits, eastern Red Lake area, northwestern Ontario; in Proceedings of the CIM Gold Symposium, September 1980, The Canadian Institute of Mining and Metallurgy, Special Volume 24, p. 171-183.

5

Sanborn-Barrie, M., Skulski, T., and Parker, J., 2001. Three hundred million years of tectonic history recorded by the Red Lake greenstone belt, Ontario; Geological Survey of Canada, Current Research 200 1-C 19, 30 p.

Sanborn-Barrie, M., Skulski, T., Parker, J., and Dube, B., 2000. Integrated regional analysis of the Red Lake greenstone belt and its mineral deposits, western Superior Province, Ontario; Geological Survey of Canada, Current Research 2000-C18, 16 p.

6

RUBICON MINERALS CORPORATION -ORIL LOG

Hole 10: AL -06-08 Nlrthlng mM15 NADl3] 5665400.00

Eastlng WTMI NADl3] 451837.00

Bavation(ml 376.00

Length [mJ 309

Loggad Iy: C. Hoffe

TESTS: DBpth [m] Typa/Gomm8llts

21-Apr-05

0.00 Compass/Survey

15.00 Reflex

75.00 Reflex

261.00 Reflex

LIDII oo-ord North Local Co-ord East Contractor: Hy-Tech Drilling

fIIIId Lotion: Start Data: March 20, 2005 End Data: March 22, 2005

Ii Az I COIIImonts -50.00 110.00 I -52.00 102.20

-52.30 99.80

-52.60 97.50

Project: Rubicon Red Lake Hole Number:AL-05-08 From To Rocktype & Description From (m To (m) Sample Width (m) Au (ppb)

0.00 6.85 Casing

6.85 51.95 Bt-Chl Alt'd Basalt 21.65 22.65 MCC04699 1.00 2.50

Dark geen to dark brown, fine grained basalt. 40.20 41.20 MCC04702 1.00 2.50

41.20 41.70 MCC04703 0.50 2.50

-Moderate biotite alteration (40%) throughout, weak carb «15%) and moderate 49.00 49.50 MCC04704 0.50 -2.50

chI (45%). The alteration occurs as irregular bands. 49.50 50.50 MCC04705 1.00 2.50

-From B.35m to 9.B5m and from 22. 2m 22.6m are more strongly biotite altered

sections.

-Weakly deformed with a weak fabric BO° to core axis (25m)

-<5% sugary calcite±qtz veins < 1 cm wide, parallel to foliation and locally

mineralized with trace po and py.

-At 39.4 is a <3cm wide calcite breccia 45° to core axis.

-From 41.2m to 41.45m is a light green to light pink altered interval. Possible

21/04/2005 Page 1

Project: Rubicon Red Lake

From To Rocktype & Description

sericite with weak potassic alteration.

-From 48.3m to 48.6m possible dyke?

-49. Om 49. 2m is a a calcite breccia with very angluar mafic frags and hairline

calcite filled fractures. It is minerlaized with <1% py.

-Trace py and po diss throughout.

-Gradational lower contact with more chi rich basalt.

« Bt 40.00%»

« Carb 15.00%»

« ChI 45.00%»

(@ 25.00 S1 80.00° >

« Py 0.10%»

« Po 0.10%»

51.95 80.35 Basaltic Komatiite

Dark green, very fine grained, massive basaltic komatiite.

-Very fine grained to granular sections of dark green, basaltic komatiite.

-Unaltered, chi rich with a consistant green color throughout.

-From 58.1 m to 62.6m very granular (coarse grained) intrusive texture

-<3% calcite veins <2cm thick decreasing in concentration downhole.

-Trace to <1% py and po diss and as fracture fill throughout.

-At 56. 7m there are a group <1 % of py and po filled fractures.

- At 57.5m and 58.15 are 2 small <10cm wide seriCite/epidote? altered,

mineralized intervals with trace py, po and cpy.

-From 67.3m to 67.55m, 67. 85m to 67.9m, 68. 3m to 68.4m and 70.5m to 70.6m

are

small, irregular intervals of sericite+chlorite+carb±epidote alteration.

Locally mineralized with <1% to trace po, <1% to trace py.

21/04/2005

Hole Number: AL-05-08

From (m To (m) Sample Width (m) Au (ppb)

56.50 57.00 MCC04706 0.50 2.50

57.00 58.00 MCC04707 1.00 6.00

58.00 58.50 MCC04708 0.50 16.00

67.00 67.50 MCC04709 0.50 2.50

67.00 68.00 MCC04710 1.00 6.00

68.00 68.95 MCC04711 0.95 6.00

68.95 69.50 MCC04712 0.55 19.00

69.50 70.50 MCC04713 1.00 8.00

70.50 71.00 MCC04714 0.50 6.00

Page 2



-From 69.0m to 69.5m is a small calcite vein mineralized with <1% py and cpy.

-<1% diss po and py diss throughout.

-Fairly sharp lower contact with a more biotite and carb altered basalt.

« CVs 3.00%»

« Py 1.00%»

« Po 1.00%»

« Cpy O. 10%»

80.35 95.65 Bt-Chl Alt'd Basalt

Dark green to dark brown, fine grained basalt.

-Moderately to locally strongly biotite altered (65%) and moderate chI (45%).

The biotite alteration occurs as irregular, discontinous to continous bands

from <1cm to 5cm wide.

-Often have sub-millimeter to cm sized, irregular pink garnets associated with

the biotite alteration. <5% total throughout.

-<5% irregular, sugary calcite±chl±po±py veins <1cm in size.

-From 88.7m to 88.95m is an interval of broken rubbly core cut by a shallow 20°

to core axis carb+chl fil/ed fracture.

-From 82.35m to 82.45m is a 10cm wide ank+cal+chl+green amph vein 75° to

core

axis.

-From 89.5m to 95.65m is the appearance of small, <1cm in size, flattened,

calcite amygdules.

-From 95. 15m to the lower contact is a strong increase in biotite alteration

(75% biotite).

-Sharp lower contact with a large massive sulfide vein? 85° to core axis.

21/04/2005

Hole Number: AL-05-0B


81.20 82.10 MCC04715 0.90 2.50

82.10 82.60 MCC04716 0.50 5.00

82.60 83.60 MCC04717 1.00 2.50

94.00 95.15 MCC04718 1.15 2.50

95.15 95.65 MCC04719 0.50 2.50

Page 3



« 82.35- 82.45 AV 75.00° 10.00cm»

« 80.35- 95.65 Bt 65.00%»

« ChI 45.00%»

« CVs 5.00%»

« 95. 15- 95.65 Bt 75.00%»

(@ 95.65 LCT 85.00°)

95.65 95.95 Sulphide Vein?

Massive sulphide vein?

-10% qtz and calcite 90% sulphides.

-Sulphides are comprised of 90% po, 8% py, <1% mag and <1% cpy.

-Qtz±carb is observed as subround to subangular frags, averaging < 1 cm.

-Sharp lower contact 85° to core axis.

« Po 90.00%»

« Py 8.00%»

« Mag 1. 00%»

« Cpy 1.00%»

(@ 95.95 LCT 85.00°)

95.95 100.00 Chi Alt'd Basalt

Dark green, fine grained, massive basalt.

-Relatively unaltered,chl rich basalt. Consistant green color throughout.

-Weakly deformed with a weak fabric 80° to core axis.

-Trace po and py diss throughout.

-From 98.05m to 98. 15m is a small, clay gouge fil/ed fault 90° to core axis.

-From 98.5m to 99.75m are shallow angle, 20° to core axis, fuchsite filled

21/04/2005

Hole Number:AL-05-0B

From (m) To (m) Sample Width (m) Au (ppb)

95.65 95.95 MCC04720 0.30 112.00

95.95 96.95 MCC04721 1.00 2.50

Page 4



veins.

-From 99.75m to 99. 8m is a 5cm wide clay gouge fault 90° to core axis.

-Sharp lower contact with ultramafics at 75° to core axis.

S< @ 97.70 S1 80.00· >

« Po O. 10%»

« Py 0.10%»

< @ 98.05 FLT 20.00· >

< @ 99.75 FLT 90.00

(@ 100.00 LeT 75.00· >

100.00 105.40 Carb Alt'd UM?

Dark to light grey to light grey green, carb altered ultramafics?

-Moderate to strong carb alteration throughout, however it is most intense near

the upper contact and decreases in intensity downhole.

-Local fuchsite alteration giving local patches a greenish yellow hue.

-Weakly to moderately magnetic.

-Local hematite staining and hematite filled hairline fractures.

-Moderately to strongly deformed with what may be a sheared section of

ultramafics from 104.2m to 105.4m.

-1% hairline to <1cm wide carb veins generally at high angle to core axis.

-Mineralization includes: <1% py (in carb veinlets and as fracture fill), <3%

mag (diss throughout and in veinlets) and <1% po (along fractures).

-From 101.4m to 101.8m is a small, <2cm wide, zone of alteration or

deformation? which appears fuchsite and carb rich.

-From 104.2m to 105.4m this unit appears sheared out with light, chaulky green,

irregular lenses elongate to fabric (70· to core axis).

-Gradational lower contact with more massive, granular ultramafics.

21104/2005

Hole Number: AL-05-0B --------.-------------------~

From {m To (m) Sample Width (m) Au (ppb)

100.00 101.00 MCC04722 1.00 9.00

Page 5


From To

« Py 1.00%»

« Mag 3.00%»

« Po 1. 00%»

(@ 105.10 S1 70.00 0 )

105.40 109.90 Ultramafics

Rocktype & Description

Dark grey to black, fine grained to granular, ultramafics.

-Serpentine to talc altered, yielding a soft light green, spotted alteration.

-In general this unit is weakly to moderately deformed. However, from 105. 4m to

106. 8m this unit is moderately to strongly deformed (possible shear). Strong

fabric 70 0 to core axis. (Probably just less altered than the previous sheared

ulltramafic) .

-<5% diss mag throughout.

-Moderately to locally strongly magnetic.

-At 107.25m is a small <2cm wide clay gouge filled fault 90" to core axis.

-Gradational lower contact with carb altered ultramafics.

(@ 105.91 S1 70.00" )

« Mag 5.00%»

109.90 110.75 Carb Alt'd UM

Dark to light grey, fine grained, carb altered ultramafics.

-Moderate to strong carb alteration.

-Fine grained and massive.

-<5% calcite veins.

-Weakly deformed.

21104/2005

Hole Number:AL-05-08


108.00 109.00 MCC04723 1.00 47.00

Page 6



-From 110.05m to 110.15m is a possible small, <10cm wide, fine grained,

massive

mafic dyke.

-At 110.2m is a shalow, 20° to core axis, hematite filled fracture.

-Sharp lower contact with mafic dyke?

« CVs 5.00%»

110.75 111.05 Mafic Dyke?

Dark grey, fine grained, massive mafic dyke?

-Fine grained and relatively unaltered.

-Sharp upper and broken lower contact.


Dark black to dark green, fine grained to granular ultramafics.

-Serpentine and talc altered, yielding a soft, light chaulky green, spotty

appearence.

-Weakly deformed.

-Shallow, 20° to core axis, serpentine and hematite filled fractures.

-112.1m is a small, broken qtz+carb+hematite+py vein <1cm in size.

-Sharp lower contact with basaltic komatiite.


Dark to light green, fine grained, massive basaltic komatiite.

-Generally light grey however changing to medium to dark green at 120. 5m

21/04/2005



111.60 112.60 MCC04724 1.00 22.00

112.60 113.60 MCC04727 1.00 2.50

Page 7



(possibly less altered).

-Soft and weakly magnetitic.

-Weakly deformed with a fabric 80° to core axis (118. 6m).

-At 11S. Om is a small amount of irregulat silica flooding? and small patches of

waxy hematite? and fuchsite.

-Local hematite and po along fractures.

-At 118.1 m is a small, <2cm wide, sandy gouge filled fault 70° to core axis.

-From 118.7Sm to 119. 7m is a very light grey with pink hue interval, with local

small qtz veins, <1cm wide, and locally minerlaized with «1% cpy.

-From 119. 9m to 120.0Sm the core is slightly broken and more altered. Possible

fault?

-From 122.6m to 122.7m is a medium grey, fine grained, moderately deformed

interval with sharp upper and lower contacts. It is soft and moderately

magnetitic.

(@ 118.60 S1 80.00° )

(@ 118.10 FLT70.000)

« Cpy 0.10%»


Dark black to dark green, fine grained to granular ultramafics.

-Serpentine and talc altered, yielding a soft, fight chaulky green, spotty

appearence.

-Weakly deformed.

-Moderately to strongly magnetic.

-At 123.7m is a small, <1cm wide, calcite viein mineralized with 10% red sph,

10% ga and <2% py. Broken upper and lower contacts.

-From 123.7Sm to 123. 8m is a Scm wide calcite+mg-carb? (grey granularcarb

21/04/2005

Hole Number: AL-05-0B

From (m To (m) Sample

122.70 123.55 MCC04728

123.55 124.05 MCC04729

124.05 124.70 MCC04730

Width (m)

0.85

0.50

0.65

Au (ppb)

..................

33.00

20.00

2.50

Page 8



but

doesnt fizz). BO· to core axis.

-At 124.7m is a shallow 10· to core axis hemtite stained fracture.

-From 124.7m to 125.35m the ultramafics are a fight green grey color


(@ 123.70 CV BO.OO·)

(@ 123.75 CV BO.OO·)

130,30 148.50 Basaltic Komatiite

Dark green, fine grained to locally granular, basaltic komatiite.

-Relatively unaltered, chI rich basaltic komaliite. Locally very weak biotite

alteration found as thin «1mm) wispy bands parallel to foliation.

-Fairly consistant dark green color throughout.

-Weakly deformed with a weak fabric BO· to core axis (139. 7m).

-<5% irregular, white, sugary calcite veins parallel to foliation.

-It is fine grained but locally more granular (coarser grained intrusive) in

the core of the unit.

-Trace po and py diss throughout.

-From From 142.2mto 142.Bm is a lighter green slightly more carb and sericite

altered interval.

-From 143.0m to 143. 15m is a small, very pale green (sericite? altered), highly

strained.

-Sharp lower contact with mafic to felsic tuffs.

(@ 139.70 S1 BO.OO

« CVs 5.00%»

« Po O. 10%»

21/0412005



136.05 137.05 MCC04731 1.00 2.50

Page 9

Project: Rubicon Red Lake From To Rocktype & Description

« Py 0.10%»

148.50 159.85 Mafic to Felsic Tuffs?

Fine grained to crystal rich, dark green to purple mafic to felsic tuff.

From 148.5m to 150.9m is a dark green, fine grained mafic tuff.

From 148.45m to 149.3m local garnets <3%, small (mm size pink garnets). From

149.9m to 150.9m is another slighty more sericite? altered (lighter green

color) interval. Fairly sharp, however gradational lower contact with crystal

rich tuff.

From 150.9m to 151.6m dark purple, fine grained, crystal rich tuff.

Generally very fine grained with 5% qtz and feldspar phenocrysts.

Mineralization includes <3% diss and fracture fill py and trace po?

At 151.5 is a 1cm wide fuchsite+py vein 25° to core axis. Sharp lower contact

25° to core axis with mafic tuff.

From 151.6m to 153. 20m dark green, fine grained, mafic tuff.

Weakly deformed with a weak fabric 70° to core axis (152.5m). Mineralization

includes <1% diss and fracture fill py. From 151.65m to 151.75m is a small,

very deformed, soft (almost gouge like) interval. It is comprised of sericite,

chI, fuchsite and <1% py. It is possibly a fault 50° to core axis. Very weak

biotite alteration local/y. Sharp lower contact with crystal rich tuff 85° to core axis.

From 153.2m to 154.05m dark grey with a purple hue, fine grained, crystal rich

21/04/2005

Hole Number:AL-05-0B .. _-_ ...

From (m) To(m) Sample Width (m) Au (ppb)

150.90 151.60 MCC04732 0.70 6.00

151.60 152.60 MCC04733 1.00 7.00

152.60 153.25 MCC04734 0.65 15.00

153.25 153.75 MCC04735 0.50 6.00

153.75 154.05 MCC04736 0.30 2.50

154.05 155.05 MCC04737 1.00 2.50

155.05 155.90 MCC04738 0.85 2.50

155.90 156.90 MCC04739 1.00 26.00

156.90 157.90 MCC04740 1.00 7.00

157.90 158.85 MCC04741 0.95 2.50

Page 10



tuff.

Very fine grained to fine grained, with very small, mm sized qtz and possible

feldspar crystals. From 153.2m to 153.4m the tuff has a reddish hue and is

mineralized with banded py. From here to the end of the unit the py is diss

throughout and locally banded.

Total mineralization includes 10% py diss and banded throughout. Gradational

lower contact with fine grained, mafic tuff.

From 154.05m to 155.9m dark green to grey, fine grained mafic tuff. Locally

mineralized with 1% fracture filled and diss py.

From 155.9m to 159. 85m are alternating felsic crystal>mafic tuff.

The lower interval of felsic tuff is very crystal rich in its core may actually

be a porphyry dyke.

Sharp lower contact with basaltic komatiite.


Medium grey green to dark green, fine grained, basaltic komatiites.

-Weakly talc altered. It is fairly soft.

-Fine grained to slightly granular.

-Weakly deformed with a fabric 70° to core axis.

-From 162.75m to 162.95m is a small, felsic to intermediate dyke, with sharp

upper and lower contacts. There is also a gradational alteration halo <30cm

wide on both sides. Sericite alteration increases in intensity towards and away

from the dyke.

21/0412005



164.00 165.00 MCC04742 1.00 2.50

Page 11



-Sharp lower contact with felsic, crystal rich tuff 80° to core axis.

(@ 160.60 S1 70.00° >

(@ 166.35 LeT 80.00° >

166.35 171.10 Felsic to Mafic Tuff

Dark purple, fine grained to crystal rich tuff grading into a fine grained

mafic tuff.

-Fine grained, crystal rich felsic tuff. Fairly massive throughout.

-From 169.25m to 169.8m nicely banded, very sedimentry looking textures.

-From 169.5m to 169.75m is the transition zone between felsic, crystal rich and

mafic tuff.

-Mafic tuff is dark green, very fine grained with local, thin <2% calcite

veins.

-At 170.9 is a small calcite breccia with angular frags of mafic tuff.

-Gradational lower contact with fine grained basalt.

171.10 185.70 Chi Alt'd Basalt?

Dark to light green, fine grained basalt.

-Dark green, fine grained, basalt.

-Relatively unaltered and chI rich.

-Fair/y massive, with 5% irregular, wispy calcite veins <1cm in size.

-From 173.5m to 173.7m and 173. 9m to 174. 15m are two small, fine grained,

massive intermediate dykes. They both have sharp upper and lower contacts and.

are miner/aized with 1% py.

-Gradational? lower contact with mafic tuff.

21/04/2005



166.35 167.35 MCC04743

167.35 168.35 MCC04744

168.35 169.35 MCC04745

169.35 170.35 MCC04746

170.35 171.35 MCC04747

180.00 181.00 MCC04748

Width (m)

1.00

1.00

1.00

1.00

1.00

1.00

Au (ppb)

2.50

2.50

17.00

2.50

2.50

6.00

Page 12



« CVs 5.00%»

185.70 187.35 Mafic to Felsic Tuff

Dark green to dark purple, fine grained to crystal rich,mafic to felsic

tuffaceous sediment.

-Dark green to light sericite green, fine grained, ash? tuff.

-Well banded. 70° to core axis.

-Local felsic, crystal rich sections at 186.5m and from 187.1m to 187.35.

-Broken lower contact with possible fault gouge.

(@ 186.00 SO 70.00° )

187.35 200.00 Carb Alt'd UM? (Strongly Faulted)

Dark grey to black,strongly faulted, fine grained ultramafics?

-Moderately to strongly carb altered with the most intense carb alteration near

the upper and lower contacts. The areas of stronger carb alteration are a

lighter grey in color. There are also local patches of serpentine to talc

alteration.

-From 18B.5m to 194.65m this unit is strongly faulted. The core is very broken,

with local sandy to gravelly sections and local <5cm wide clay gouge intervals.

-Local slicks ane gouge along fractures.


-<5% irregular, often network like, <1cm to hairline carb veinlets.

-From 193. 7m to 198.35m the ultramafics are less carb altered and are darker in

color.

21104/2005

Hole Number: AL-OS-OB


189.15 190.15 MCC04749

197.00 198.00 MCC04752

Width (m)

1.00

1.00

Au (ppb)

8.00

5.00

Page 13



-At 198. 5m is a 2cm wide clay orange to beige gouge zone.

-Fairly sharp lower contact with basaltic komatiite.

« CVs 5.00%»

(@ 188.50 FLT90.00·)


Dark green, fine grained, massive basaltic komatiite.

-Relatively unaltered, chi rich basaltic komatiite.

-Weakly deformed.

-Local weak carb alteration.

-At 201.3m is a small, broken, gougey fault. 50· to core axis.

-Trace diss py.

-Gradational lower contact with more granular basaltic komatiite or possible

mafic tuff?

(@ 201.30 FLT 50.00· >

« Py 0.10%»


Dark green to black, fine grained to slightly granular basalt?

-Dark green to black

-Weakly to moderately deformed

-Localleucoxenes

-From 207.5m to 207. 8m is possible intermediate dyke. It is mineralized with

2-3% fine grained diss py.

-Local patches of pink, potassic alteration towards lower contact.

-Sharp lower contact with qtz feldspar porphyry 70· to core axis.

21/04/2005



202.15 203.15 MCC04753 1.00 6.00

207.30 208.30 MCC04754 1.00 17.00

Page 14

Project: Rubicon Red Lake Hole Number:AL-05-0B

From To Rocktype & Description From (m To (m) Sample Width (m) Au (ppb)

< @ 208.30 LCT 70.00· )

208.30 211.25 Quartz Feldspar Porphyry 208.30 209.30 MCC04755 1.00 20.00

Dark purple, qtz feldspar porphyry. 209.30 210.30 MCC04756 1.00 5.00

-Matrix is purple, and fine grained with 25% qtz and feldspar phenocrysts,

<.Scm in size.

-Local potassic alteration

-Trace py and cpy diss throughout.

-From 208.3m to 208.5m is an inteNal of strong pink (potassic) alteration.

-Throughout this unit are generally steep angled, 1cm wide, fuchsite/chl?

filled veins or faults. They are locally gougey.

-From 210.35m to 210. 75m is an inteNal of dark green, fine grained basalt or

mafic tuff.


« Py 0.10%»

« Cpy O. 10%»


Medium grey green, fine grained to granular basaltic komatiite.

-Strong sericite? alteration at the upper contact decreasing downhole to a

massive granular basaltic komatiite.

-Sharp lower contact with qtz feldspar porphyry at 80· to core axis.

< @ 212.15 LCT 80.00° )

212.15 241.45 Quartz Feldspar Porphyry 220.10 221.10 MCC04757 1.00 2.50

Dark to light grey with a purple hue, qtz feldspar porphyry. 221.10 222.10 MCC04758 1.00 2.50

21/04/2005 Page 15



-Dark grey to purple, fine grained matrix with 30-40% qtz and feldspar

phenocrysts from mm's in size to <.Scm.

-Local phenocryst rich lenses which are fight grey in color and give this unit

a banded appearance.

-<3% local small, pink garnets mm's in size diss throughout.

-From 231.6m to 234m is mineralized with trace py and possible trace aspy?

Aspy There are also a few shallow angle (250 to core axis) chI fractures with

bleached potassiC halos.

-At 243.65m to 243.75m is a light green bleached section of porphyry.

-At 239. Om to 239. 1m is an irregular qtz vein. It is clear with no apparent

mineralization.

-From 240.45m to 242. 3m is a potaSSiC altered interval. The potaSSiC alteration

is associated with various angled chi? filled fractures. The pink to beige

alteration halos are generally <.5cm wde on both sides of the fractures. At

240. 3m is very strong potaSSiC alteration due to an increase in concentration

of fractures.

-From 244.6m to 244.85m is an lens of strongly chi altered basalt. 20% calcite

veins and <5% qtz veins.

-From 247. 7m to 248. 1m is another interval with strong potaSSiC alteration.

-From 249. Om to 251.0m the porphyry appears more biotite rich/altered? and

weakly deformed.

-From 251.0m to 241.45m the porphyry? becomes very chi rich and deformed.

There is a sharp lower contact between this chi rich unit and the under/ying

ultramafic.

« 231.60- 234.00 Aspy 0.01%»

« Py O. 10%»

21/04/2005


From (m To(m) Sample Width (m) Au (ppb)

231.60 232.60 MCC04759 1.00 2.50

232.60 233.60 MCC04760 1.00 2.50

233.60 234.10 MCC04761 0.50 2.50

240.45 241.20 MCC04762 0.75 2.50

Page 16




Dark black massive ultramafics.

-From the upper contact to 242.3m the ultramafic is altered to a light grey

color.

-Local talc and serpentine alteration.

-Local mag filled dilational hairline fractures.

-Strongly magnetic.

-From 256.4m to 256.05m there is an increase in talc alteration towards the

lower contact. The rock changes from a dark black to a light green grey

color.

-The lower contact is faulted with clay gouge intervals increasing downhole to

a Scm wide gougey interval at the contact 60° to core axis.

( @ 256.05 LeT 60.00° )

256.05 258.40 Quartz Feldspar Porphyry

Dark purple to pink, qtz feldspar porphyry.

-Matrix is dark purple/ine grained and sillicious with 20-25% qtz and feldspar

phenocrysts, <.5cm in size.

-Local potassic (k-spar) alteration along vanous chlorte filled hairlne

fractures (257.4m to 257.9m).

-Trace py.

-Gradational lower contact with fine grained felsic.

258.40 264.40 Felsic Porphyry

21/04/2005



241.20 242.30 MCC04763 1.10 2.50

260.00 261.00 MCC04764 1.00 2.50

Page 17



Dark purple grey, fine grained, massive felsic.

-Weakly deformed.

-<1% diss py increasing downhole.

-Sharp lower contact with coarse grained felsic dyke

264.40 264.70 Felsic Feldspar Porphyry

Grey to white, feldspar porphyry.

-Small dyke, 30cm wide with sharp upper and lower contacts.

-30% euhedral feldspar crystals, <.Scm in size.

-Matrix is dark grey silica.

-Small elongate, mafic philosilicates

-Sharp lower contact 7S· to core axis.

( @ 264.70 LeT 75.00· )

264.70 269.70 Felsic Porphyry (Sheared)

Dark grey to purple, qtz and feldspar porphyry (possible crystal rich

tuffaceoussedimenQ

-Increases in deformation and alteration downhole.

-From 264.7m to 266.6m this unit is relatively undeformed, dark purple in color

with local qtz and feldspar phenocrysts.

-From 26S.Sm to 26S.6Smis a chI rich lens

-From 266.6m to 269. 70m this unit becomes increasingly more deformed and

sheared and there are <10% small, mm in size, irregular pink gamets

throughout. It also increases in biotite? alteration.

-269. SSm gnesisic banding? Looks gnesis like for 10cm.

-Sharp lower contact with calcite chI rich vein then carb alteredultramafics.

21/04/2005



268.70 269.70 MCC04765 1.00 2.50

Page 18



269.70 271.30 Carb Alt'd UM

Dark to light green, fine grained, carb altered ultramafics.

-Moderate to strong carb alteration and moderate to weak amph alteration.

-From 269. 7m to 269.95m is an irregular calcite chI vein. Locally brecciated.


-Moderately deformed witha strong fabric 80· to core axis.

-Gradational lower contact with talc altered ultramafics.

( @ 271.00 S1 80.00· )

271.30 280.60 Talc Alt'd UM

Dark to light green grey, fine grained, talc altered ultramafics.

-From 271.3m to 273.05m ank and talc altered, ultramafics. The alteration gives

this interval a banded apperance.

-From 273.05m to 278.6m the ultramafics are very dark in color, with minor

alteration.

-From 278. 6m to 280.6m talc alteration increases again yei/ding a tigher color

ultramafics.

-Fabric is generally very steep to core axis until 280. Om. Here the fabric goes

from 60· to 30· within 30cm. From 280.45m to 280.60m the ultramafics are

extremely deformed, contorted and altered.

-From 279.5m to 279.7m is a small,mafic? dyke

-Sharp lower contact 50· to core axis.

(@ 280.60 LeT 50.00·)

21/04/2005


From (m) To (m) Sample

269.70 270.70 MCC04766

277.50 278.50 MCC04767

279.70 280.70 MCC04768

Width (m)

1.00

1.00

1.00

Au (ppb)

2.50

2.50

6.00

Page 19



280.60 283.10 Quartz Feldspar Porphyry (Schisty)

Dark brownish grey to pink, schisty qtz feldspar porphyry?

-Fine grained, biotite rich, minor sericite, very schisty looking texture.

-From 282.2m to 282.6m is an interval of very strong k-spar alteration.

-Mineralized with 5% fine grained diss py.

-Lower contact may be faulted. 10cm wide, chI rich gougey to solid interval

before sificifed qtz feldspar porphyry.

283.10 287.15 Quartz Feldspar Porphyry (Silicifie

Dark grey purple to light grey purple, fine grained, qtz feldspar porphyry.

-Moderately deformed with a strong fabric 70° to core axis (285.5m).

-Slightly porphyritic with local small qtz and feldspar phenos

-Moderately to strongly silicified throughout with local weak potaSSiC and

epidote alteration.

-<5% thin carb veins cutting fabric 70° to core axis.

-<3% fine grained diss py throughout

-Core gets very broken and rubbly towards the lower contact.

( @ 285.50 S1 70.00° )

287.15 288.40 Fault Zone

Strongly deformed fault zone, ranging from dark black to light green, gougey to

cataclastic? (tectonic breccia) in texture.

21104/2005



280.70 281.70 MCC04769

281.70 282.20 MCC04770

282.20 284.20 MCC04771

284.20 285.20 MCC04773

285.20 286.20 MCC04774

286.20 287.20 MCC04777

287.20 288.40 MCC04778

Width (m)

1.00

0.50

2.00

1.00

1.00

1.00

1.20

Au (ppb)

2.50

2.50

2.50

2.50

2.50

2.50

7.00

Page 20



288.40 294.50 Quartz Feldspar Porphyry (Tuff?)

Light green to dark purple, fine grained, qtz feldspar porphyry (possibly a

crystal rich tuffaceous sediment).

-From the upper contact to 293.2m This unit grades from a grey green fine

grained felsic to a dark grey purple qtz and feldspar phenocryst rich unit.

-From 294.25m to 294. 35m is an interval of strong potassic alteration.

-<1% py diss throughout.

-From 292.45m to 292.6m is a qtz vein with sharp upper and lower contacts 80·

and 70° to core axis. It is mineralized with 2% py and < 1 % po.

-Firly sharp lower contact.

« Py 1.00%})

( @ 292.45 QV 75.00° 15.00cm)

294.50 295.60 Chi Alt'd Basalt (Tuff?)

Dark green, fine grained basalt (possible tUff).

-Chi rich with local weak sericite and carb alteration

-<3% calcite veins <1cm in size.

-Sharp lower contact 65° to core axis.

« CVs 3.00%»

( @ 295.60 LCT 65.00· )

21/04/2005



288.40 289.40 MCC04779 1.00 2.50

289.40 290.40 MCC04780 1.00 2.50

291.60 292.30 MCC04781 0.70 2.50

292.30 292.80 MCC04782 0.50 2.50

292.80 293.80 MCC04783 1.00 2.50

Page 21



295.60 299.60 Quartz Feldspar Porphyry (Tuff?)

Dark purple to dark grey green, fine grained qtz feldspar porphyry (possible

felsic crystal rich tuff).

-Moderately to strongly deformed with a strong fabric 75· to core axis

(296.5m).

-5% small, mm sized, pink garnets throughout.

-10-15% qtz and feldspar phenocrysts/crystals, decreasing in size and intensity

downhole.

-Local weak to moderate potaSSiC alteration.

299.60 309.00 Talc Alt'd UM

Dark grey to black, fine grained, massive ultramafics.

-Weak to moderate talc alteration throughout with local serpentine alteration.

-<2% irregular ank veins

-1% mag veinlets <.Scm in size and 60· to core axis.

-At 30B.35m is blebby serpentine alteration and magnetite with py.

-Weakly deforemed with a weak fabric 70· to core axis (303.4m)

The End.

An« Ank 2.00%»

« Mag 1.00%»



307.70 308.70 MCC04784 1.00 10.00

Page 22

Project: Rubicon Red Lake Hole Number:AL-05-08 From To Rocktype & Description From (m} To(m) Sample Width (m) Au (ppb)

« Py O. 10%» c-- ----------

(@ 303.40 S1 70.00° ) ,- ---- ---

1-- .----

309.00 309.00 EOH - -

21/04/2005 Page 23

ALS Chemex EXCELLENCE IN ANAL YTlCAL CHEMISTRY ALS Canada Ltd.

212 Brooksbank Avenue North Vancouver BC V7 J 2C1 Phone: 604 984 0221 Fax: 6049840218

To: RUBICON MINERALS CORPORATION 1540-800 W PENDER ST VANCOUVER BC V6C 2V6

Page: 1 Finalized Date: 14-APR-2005

Account: MUC

CERTIFICATE T805023205 SAMPLE PREPARATION

Project: ON635_050327 _o8

P.O. No.:

This report is for 85 Drill Core samples submitted to our lab in Thunder Bay, ON, Canada on 1-APR-2005.

The following have access to data associated with this certificate: DAVID ADAMSON TERRY BURSEY MICHAEL GRAY

GARFIELD MCVEIGH LARRY POZNIKOFF IAN RUSSELL ~ICON - RED LAKE WEB ACCOl

To: RUBICON MINERALS CORPORATION AnN: LARRY POZNIKOFF 1540-800 W PENDER ST VANCOUVER BC V6C 2V6

ALSCODE

WEI-21 LOG-22 LOG-24

CRU-32 SPL-21 PUL-32

ALSCODE

Au-AA24 Au-GRA22 ME-ICP61

ME·XRF05 ME·XRF06 OA-GRA06

This is the Final Report and supersedes any preliminary report with this cer\ificate number. Results apply to samples as submitted. All pages ofthis report have been checked and approved for release.

DESCRIPTION

Received Sample Weight Sample login - Red wlo BarCode

Pulp Login - Rcd wlo Barcode Fine Crushing 90% <2mm Split sample - riffle splitter Pulverize 1000g to 85% < 75 um

ANALYTICAL PROCEDURES DESCRIPTION INSTRUMENT

Au 50g FA AA finish AAS Au 50 g FA-GRAV finish WST-SIM

27 element four acid ICP-AES ICP-AES

Trace Level XRF Analysis XRF

Whole Rock Package - XRF XRF

LOI for ME-XRF06 WST-SIM

Signature:

Method Analyte

Units Sample Description LOR

MCC04699 MCC04700 MCC04701 MCC04702 MCC04703


MCC04709 MCC0471 0 MCC04711 MCC04712 MCC04713


MCC04719 MCC04nO MCC04721 MCC04n2 MCC04723




ALS Chemex EXCEl.l.ENCE IN ANAI.Y71CAI. CHEMISTRY ALS Canada Ltd.

212 Brooksbank Avenue North Vancouver BC V7 J 2Cl Phone: 604 984 0221 Fax: 604 984 0218

Au·AA24 Au·GRA22 ME·ICP61 ME·ICP61 Au Au Ag AI ppb ppm ppm % 5 0.05 0.5 0.Q1

<5 <0.5 8.49 2050

<5 <5 <0.5 8.45 <5 <0.5 8.06

<5 <0.5 8.19 <5 <0.5 8.71 <5 <0.5 7.97 6 <0.5 7.65 16 <0.5 8.08

<5 <0.5 8.43 6 <0.5 8.60 6 <0.5 8.02 19 <0.5 8.50 8 <0.5 8.24

6 <0.5 8.20 <5 <0.5 7.62 5 <0.5 6.41

<5 <0.5 8.60 <5 <0.5 8.12

<5 <0.5 8.75 112 <0.5 1.47 <5 <0.5 5.21 9 <0.5 2.03 47 <0.5 1.07

22 <0.5 1.33 NSS <5 <5 <0.5 3.66 33 <0.5 1.18

20 <0.5 0.87 <5 <0.5 2.00 <5 <0.5 8.34 6 <0.5 6.82 7 <0.5 8.02

15 <0.5 7.51 6 <0.5 7.17

<5 <0.5 7.06 <5 <0.5 7.57 <5 <0.5 7.30

ME·ICP61 As

ppm

5

<5

<5 <5

<5 <5 <5 <5 <5

<5 <5 <5 <5 <5

<5 <5 <5 <5 14

13 7

101 23 8

<5

<5 10

14 7

<5 <5 <5

<5 5

<5 <5 <5

Comments: NSS is non-sufficient sample.

ME·ICP61 Ba

ppm

10

190

120 130

270 150 20 30 20

120 40 30 40 50

50 240 180 190 190

500 40

<10 <10 <10

<10

<10 <10

<10 <10 70 170 70

50 370 320 30 50


I CERTIFICATE OF ANALYSIS

ME·ICP61 ME·ICP61 ME·ICP61 ME·ICP61 ME·ICP61 ME·ICP61

Be BI Ca Cd Co Cr ppm ppm % ppm ppm ppm

0.5 2 0.01 0.5 1 1

<0.5 <2 8.86 <0.5 47 84

<0.5 <2 7.30 <0.5 54 174 <0.5 <2 7.12 <0.5 49 157

<0.5 <2 7.12 <0.5 52 116 <0.5 3 6.96 <0.5 55 154 <0.5 2 6.45 <0.5 50 98 <0.5 <2 6.59 <0.5 46 98 <0.5 <2 6.50 <0.5 45 98

<0.5 <2 6.89 <0.5 54 174 <0.5 <2 7.26 <0.5 43 174 <0.5 <2 7.72 <0.5 41 157 <0.5 <2 10.20 <0.5 43 161 <0.5 2 7.11 <0.5 44 158

<0.5 <2 7.44 <0.5 39 155 <0.5 <2 6.65 <0.5 45 62 <0.5 <2 8.87 <0.5 40 59 <0.5 <2 8.02 <0.5 45 110 <0.5 <2 7.17 <0.5 47 108

0.5 <2 3.83 <0.5 33 100 <0.5 <2 1.30 0.5 40 255 <0.5 <2 6.35 <0.5 74 953 <0.5 <2 8.40 <0.5 86 901 <0.5 <2 0.45 <0.5 86 1040

<0.5 <2 1.26 3.2 60 1075

<0.5 <2 6.01 <0.5 88 1570 <0.5 <2 1.34 <0.5 79 966

<0.5 <2 4.81 1.4 88 895 <0.5 <2 2.90 <0.5 78 1475 <0.5 <2 9.31 <0.5 58 350 <0.5 <2 1.98 <0.5 28 261 <0.5 <2 5.50 <0.5 50 269

<0.5 <2 5.53 <0.5 36 3010 0.5 <2 1.48 <0.5 24 135 0.7 <2 1.84 <0.5 15 54 <0.5 <2 7.57 <0.5 45 3310 <0.5 <2 6.24 <0.5 42 1470

Page: 2-A Total # Pages: 4 (A - D)

Finalized Date: 14-APR-2005 Account: MUC

T805023205

ME·ICP61 ME·ICP61 ME·ICP61

Cu Fe K

ppm % %

1 0.01 0.01

170 6.63 0.78

188 7.17 0.29 180 7.86 0.55

245 8.66 0.81 202 8.27 0.62 224 10.50 0.06 186 9.67 0.08 294 9.66 0.09

184 7.83 0.59 184 9.17 0.14 198 8.61 0.11 237 8.88 0.12 190 9.58 0.09

177 8.88 0.10 177 9.43 0.97 154 9.14 1.21 181 9.90 0.92 169 9.57 1.11

138 4.18 3.01 1040 46.7 0.11

66 8.20 0.03 103 5.68 0.01

1 6.09 <0.01

1 5.65 <0.01

17 7.36 0.D1 1 5.03 <0.01

3 4.77 <0.01 <1 5.88 0.01 109 6.61 0.31 61 4.14 1.56 142 7.97 0.35

76 6.06 0.40 74 3.67 2.05 62 3.12 1.17 118 7.87 0.14 71 7.04 0.28

Method An.lyle

Units Sample DescrIption LOR









ALS Chemex EXCEl.l.ENCE IN ANAl. Y71CAL CHEMISTRY ALS Canada Ltd.

212 Brooksbank Avenue North Vancouver BC V7 J 2C 1 Phone: 604 984 0221 Fax: 604 984 0218

ME-ICP61 ME-ICP61 ME·ICP61 ME-ICP61

Mg Mn Mo Na % ppm ppm %

0.01 5 1 0.01

2.05 1595 <1 1.92

2.40 1640 <1 2.62 2.59 1700 <1 1.86

2.09 1570 1 1.98 2.09 1585 1 2.47 4.63 1310 <1 1.50 4.48 1210 <1 1.38 4.34 1190 <1 1.32

2.18 1610 <1 2.40 3.84 1335 <1 1.71 3.62 1245 1 1.72 3.80 1540 <1 1.74 4.00 1340 1 1.96

3.62 1295 1 1.98 3.50 1405 <1 0.80 4.83 1760 <1 0.39 2.73 1615 <1 1.02 2.79 1565 <1 0.64

2.33 1100 <1 1.24 2.71 2020 <1 0.11 12.10 1795 <1 0.31 14.90 1055 <1 0.17 21.3 528 <1 0.01

19.00 622 <1 0.01

14.85 1350 <1 0.07 20.9 502 <1 0.01

19.80 707 <1 0.01 18.60 761 <1 0.04 8.00 1280 <1 1.35 4.06 472 <1 1.61 6.73 1095 <1 1.46

5.21 1155 <1 1.45 2.45 262 <1 2.22 3.09 298 <1 2.50 5.65 1280 <1 1.06 5.47 1130 <1 1.09

ME-ICP61

NI ppm

1

108

123 113

99 113 87 85 85

118 80 81 74 71

69 45 60 82 92

55 329 655 1495 2100

1595

943 2030

1980 1630 221 98 120

128 80 33 119 129


ME-ICP61

P

ppm

10

440

460 430

470 470 480 430 460

450 390 350 410 400

400 550 450 490 460

690 90 120 40 20

20

70 160

10 30

110 290 320

310 360 330 270 250


Project: ON635_05032L08


ME-ICP61 ME-ICP61 ME-ICP61 ME-ICP61 ME-ICP61 ME-ICP61

Pb S Sb Sr Ti V ppm % ppm ppm % ppm

2 0.01 5 1 0.01 1

3 0.19 <5 84 0.73 323

6 0.20 <5 106 0.76 352 8 0.19 <5 128 0.73 345

5 0.19 <5 99 0.74 352 4 0.14 <5 81 0.80 381 8 0.20 <5 106 0.76 356 7 0.09 <5 99 0.72 338 2 0.11 <5 238 0.72 333

2 0.18 <5 104 0.76 352 3 0.10 <5 229 0.65 324 6 0.13 <5 144 0.62 305 8 0.11 <5 149 0.66 288 6 0.16 <5 136 0.70 339

6 0.11 5 229 0.84 311 5 0.08 <5 58 0.85 388 5 0.30 <5 46 0.68 318

<2 0.06 <5 79 0.77 358 <2 0.10 <5 96 0.73 355

14 0.42 <5 76 0.66 376 6 >10.0 11 9 0.09 86 4 0.38 6 19 0.25 205 <2 0.37 <5 51 0.08 77 4 0.12 <5 9 0.05 46

2 0.21 <5 8 0.06 55

6 0.01 <5 40 0.16 147 10 0.11 <5 10 0.08 51

976 0.13 <5 44 0.04 38 4 0.03 <5 18 0.09 89 4 0.02 6 159 0.21 174 17 1.82 <5 151 0.13 107 11 0.26 <5 167 0.43 263

30 0.69 7 148 0.21 194 44 2.52 <5 168 0.11 79 5 0.45 <5 196 0.15 55 7 0.18 8 181 0.40 267 7 0.55 <5 186 0.33 222

Page: 2 - B Total # Pages: 4 (A - D)


T805023205

ME-ICP61 ME-ICP61 ME-XRF06

W Zn 5102 ppm ppm % 10 2 0.01

<10 109

<10 110 <10 103

<10 124 <10 120 <10 110 <10 97 <10 96

<10 115 <10 92 <10 93 <10 99 10 104 48.09

<10 88 10 118 30 90 10 103 10 110

10 132 <10 63 <10 99 10 37 34.91

<10 23 34.92

<10 856

<10 63 34.77 <10 26 36.32

<10 305 <10 32 <10 66 47.53 <10 22 <10 96

<10 74 <10 31 <10 29 <10 97 <10 112

Method Analyt.

UnilS Sample Description LOR









ALS Chemex EXCELLENCE IN ANAL YT/CAL CHEMISTRY ALS Canada Llti.

212 Brooksbank Avenue North Vancouver BC V7 J 2Cl Phone: 604 9840221 Fax: 604 984 0218

ME·XRF06 ME·XRF06 ME·XRF06 ME·XRF06

Al203 Fe203 CaO MgO

% % % %

0,01 0.01 0,01 0.01

14.24 14.27 10.50 6.71

3.22 9.14 12.00 25.62 1.78 10.46 0.64 37.67

5.82 11.67 8.66 25.09 1.80 8.32 1.89 36.21

13.27 9,58 12.90 12.59

ME·XRF06

Na20

%

0.01

2.15

0.35 0.22

0.22 0.20

1.57


ME·XRF06

K20

%

0.01

0.13

0.03 0.02

0,02 0.02

0,37


Project: ON635_050327 _08


ME·XRF06 ME·XRF06 ME'XRF06 ME·XRF06 ME·XRF06 ME·XRF06

Cr203 Ti02 MnO P205 SrO BaO

% % % % % % 0.Q1 0.01 0,01 0.01 0.D1 0,01

0,03 1.14 0.18 0.10 0.01 0.01

0.24 0.13 0.16 0.01 0.01 <:0.01 0.25 0.08 0.07 0,01 <:0.01 <0,01

0.41 0.24 0.20 0.02 <0.01 <0.01 0.23 0,11 0.07 0.03 <0.01 <0.01

0.08 0.29 0.17 0.02 0.01 0.01

Page: 2-C Total # Pages: 4 (A - D)


TB05023205

ME·XRF06 ME·XRF06 WEI·21

LOr Total RacvdWt.

% % kg

0.01 0.01 0.02

2.54 0.14 0.59 2.77 1.38

1.36 2.49 1.51 2.87 1.53

1.23 2.92 2.66 1.56

1.55 99.11 2.97

1.60 2.54 1.29 2 .. 73 2.80

1.22 1.11 2.87

14.40 100.20 2.55 14.00 100.10 2.11

2.29 0.13 0.54

12.85 99.94 2.53 14.45 99.63 1.84

1.11 1.85

1.60 99.98 2.86 0.88 2.58

1.80 1.29 1.75 2.64 2.26

Metllod Analyte

Unit. Sample Description LOR









ALS Chemex EXCELLENCE IN ANAL YTICAL CHEMISTRY ALS Canada Ltd.

212 Brooksbank Avenue North Vancouver BC V7 J 2C1 Phone: 604 984 0221 Fax; 604 984 0218

ME·XRF05 ME·XRF05 ME·XRF05 ME·XRF05 Ba Nb Rb Sr

ppm ppm ppm ppm

10 2 2 2

50 3 3 113

10 <2 2 35 10 <2 2 5

10 <2 <2 28 10 2 <2 5

70 <2 7 118

ME·XRF05 Y

ppm

2

27

5 3

7 6

9


ME·XRF05 Zr

ppm

2

58

<2 <2

7 5

11


Project: ON635_050327 _08


Page: 2· D Total '1# Pages: 4 (A· D)

Finalized Date: 14·APR·2005 Account: MUC

T805023205

Metllod Analyte










ALS Chemex EXCEu.ENCE IN ANA£YTlCAL CHEMISTRY ALS Canada Ltd.

212 Brooksbank Avenue North Vancouver BC V7 J 2C1 Phone: 604 984 0221 Fax: 604 984 0218

Au·AA24 Au·GRA22 ME·ICP61 ME·ICP61 Au Au Ag AI ppb ppm ppm % 5 0.05 0.5 0.01

26 <0.5 7.57 7 <0.5 8.05 <5 <0.5 7.47 <5 <0.5 7.29 <5 <0.5 7.12

<5 <0.5 7.43 17 <0.5 7.93 <5 <0.5 7.60 <5 <0.5 7.13 6 <0.5 0.94

8 <0.5 1.52 5070 5.47

<5 5 <0.5 1.27 6 <0.5 3.26

17 <0.5 7.22 20 <0.5 7.49 5 <0.5 7.21 <5 <0.5 7.65 <5 <0.5 7.17

<5 <0.5 7.82 <5 <0.5 7.60 <5 <0.5 7.31 <5 <0.5 7.17 <5 <0.5 7.09

<5 <0.5 7.20 <5 <0.5 7.99 <5 <0.5 2.54 <5 <0.5 1.29 6 <0.5 1.78

<5 <0.5 7.59 <5 <0.5 8.20 <5 <0.5 7.49 <5 <0.5 8.07 <5 <0.5 7.82

781 <5 <5 <0.5 6.80 7 <0.5 5.18

<5 <0.5 7.55

ME·ICP61 As

ppm

5

<5 <5 <5 5 <5

<5 <5 <5 <5 <5

<5

<5 <5

<5 <5 6 <5 <5

5 <5 6

<5 <5

<5 <5 <5 5

<5

<5 <5 6

<5 10

7 <5 <5


ME·ICP61 ea

ppm

10

280 300 790 20

250

300 320 250 210 10

40

<10 90

210 150 100 330 320

340 350 230 320 360

500 290 20 <10 40

980 1040 620 200 420

600 20 90

To: RUBICON MINERALS CORPORATION 1540·800 W PENDER ST VANCOUVER BC V6C 2V6


ME·ICP61 ME·ICP61 ME·ICP61 ME·ICP6l ME·ICP61 ME·ICP61 Be Bi Ca Cd Co Cr

ppm ppm 0/0 ppm ppm ppm

0.5 2 0.01 0.5 1 1

0.5 <2 3.12 <0.5 26 136 0.8 <2 2.48 <0.5 18 124

0.9 <2 1.53 <0.5 5 32 <0.5 <2 7.95 <0.5 54 536 0.8 <2 3.95 <0.5 10 60

0.9 <2 2.83 <0.5 8 23 0.9 <2 2.43 <0.5 9 37 0.6 <2 7.47 <0.5 27 166

<0.5 <2 7.86 <0.5 41 268 <0.5 <2 0.58 <0.5 71 1235

<0.5 <2 5.07 <0.5 85 1125

<0.5 <2 2.17 <0.5 103 1900 <0.5 <2 7.77 <0.5 64 1440

0.5 <2 5.68 <0.5 39 134 0.6 <2 1.08 <0.5 8 20 0.7 <2 0.60 <0.5 7 17 1.0 <2 2.23 <0.5 6 16 0.9 <2 2.71 <0.5 6 17

1.0 <2 2.08 <0.5 4 13 0.9 <2 2.15 <0.5 4 12 0.9 <2 2.55 <0.5 4 12 0.9 <2 2.82 <0.5 4 20 0.8 <2 2.88 <0.5 4 11

0.9 <2 2.53 <0.5 23 36 1.3 <2 4.52 <0.5 23 115

<0.5 <2 17.95 <0.5 65 545 <0.5 <2 1.97 <0.5 106 1420 <0.5 <2 3.19 <0.5 95 1160

1.6 <2 4.80 <0.5 27 120 1.5 <2 5.24 <0.5 24 148 1.0 <2 4.75 <0.5 24 277 1.0 <2 3.83 <0.5 25 152 1.1 <2 3.42 <0.5 19 58

0.6 <2 2.65 <0.5 19 47 0.7 <2 4.32 <0.5 51 491 0.6 <2 2.31 <0.5 19 38

Page: 3·A Total # Pages: 4 (A· D)

Finalized Date: 14-APR·2005 Account: MUC

TB05023205

ME·ICP6l ME·ICP61 ME·ICP61 Cu Fe K

ppm % %

1 0.Q1 0.Q1

102 5.79 1.45 41 3.70 1.07 8 1.58 1.47

106 8.42 0.12 27 2.75 1.64

23 2.58 1.64 37 2.43 2.05 68 6.17 0.87 100 8.36 0.40 <1 6.00 0.01

21 6.82 0.17

5 8.10 0.01 37 6.66 0.41

171 7.64 0.45 159 2.44 0.47 102 1.96 0.29 12 2.19 1.36 12 1.94 1.58

11 1.39 1.67 10 1.38 1.58 9 1.11 1.04 15 3.54 1.80 13 3.31 1.55

39 5.46 1.80 8 5.55 1.44

41 6.45 0.13 34 7.89 <0.01 144 6.52 0.14

158 5.37 1.68 197 5.06 2.18 136 4.69 1.92 57 5.38 0.51 52 5.09 1.56

62 4.44 2.21 38 8.63 0.11 4 5.40 0.30

Method AIIalyte










ALS Chemex EXCELLENCE IN ANALYTICAL CHEMISTRY ALS Canada Lid.


ME-ICP61 ME-ICP61 ME·ICP61 ME-ICP61

Mg Mn Mo Na

% ppm ppm % 0.01 5 1 0.01

3.13 440 <1 2.15 2.58 381 <1 3.45 1.35 236 <1 4.06 6.68 1390 <1 1.82 1.36 710 <1 2.09

1.03 849 <1 2.63 0.97 551 <1 2.51 2.76 2060 <1 1.61 5.21 2120 <1 0.95 20.0 652 <1 0.01

15.10 1275 <1 0.11

17.85 897 <1 0.02 11.80 1180 <1 0.60

4.51 1355 <1 2.83 2.48 251 <1 4.6 1.36 209 1 4.8 0.63 374 1 2.95 0.65 520 <1 2.39

0.52 361 <1 3.13 0.59 365 <1 3.00 0.36 347 <1 3.10 0.49 1535 <1 2.95 0.46 1445 2 3.06

3.68 1480 1 1.10 4.25 1315 1 1.80 7.74 3020 <1 0.14

19.10 1250 1 0.01 16.30 835 5 0.13

3.85 1015 8 2.52 3.47 1000 3 2.60 3.21 1010 3 2.27 2.09 1955 1 3.20 1.35 1735 1 2.11

1.91 1245 1 1.64 11.20 2430 <1 0.43 4.23 1260 1 3.32

ME-ICP61

Ni ppm

1

75 58 26 162 25

17 34 68 144

1970

1325

1705 533

108 26 21 9 10

8 8 6 14 9

40 134 976 1655 1575

74 70

102 93 58

62 704 41


ME-ICP61

P

ppm

10

310 360 410 260 340

400 400 320 230 10

30

70 190

440 200 270 320 310

320 320 300 270 260

710 820 130 70 180

1720 1700 970 590 570

520 420 770



ME-ICP61 ME-ICP61 ME-ICP61 ME-ICP61 ME-ICP61 ME-ICP61

Pb S Sb Sr Ti V

ppm % ppm ppm % ppm

2 0.01 5 1 0.01 1

16 2.67 <5 209 0.24 122 17 0.37 <5 268 0.24 89 6 0.01 <5 217 0.17 37

5 0.04 5 343 0.40 262 12 0.22 <5 171 0.19 57

11 0.66 <5 168 0.17 36 20 0.53 <5 200 0.17 42 11 0.15 <5 240 0.27 138 3 0.11 <5 267 0.32 208

<2 0.09 <5 13 0.04 43

<2 0.05 6 25 0.10 60

<2 0.05 7 17 0.11 70 <2 0.04 6 61 0.25 153

10 0.56 <5 306 0.59 247 5 0.09 <5 259 0.15 38 <2 0.16 5 188 0.16 35 10 0.08 <5 535 0.16 37 14 0.13 <5 503 0.14 32

13 0.02 <5 456 0.14 32 10 0.01 <5 446 0.14 32 6 0.01 <5 478 0.14 31 9 0.06 <5 385 0.13 29 4 0.06 <5 429 0.12 26

8 0.01 <5 167 0.48 152 5 0.04 <5 301 0.42 85 <2 0.13 <5 124 0.14 68 2 0.09 <5 22 0.11 78 2 0.23 <5 41 0.14 82

2 0.52 <5 831 0.49 172 4 0.66 <5 957 0.47 150 4 0.33 <5 464 0.38 122 8 0.25 <5 407 0.41 124 5 0.15 <5 408 0.38 95

3 0.13 <5 285 0.35 83 <2 0.05 <5 29 0.28 100 <2 <0.01 <5 130 0.47 162

Page: 3- B Total ## Pages: 4 (A - D)


TB05023205

ME-ICP61 ME-ICPS1 ME-XRF06

W Zn Si02

ppm ppm % 10 2 0.01

<10 54 <10 116 <10 20 <10 83 48.73 <10 62

<10 84 <10 57 <10 84 <10 66 10 25 37.16

<10 64

<10 46 37.06 <10 71 47.55

<10 60 <10 17 <10 13 <10 53 <10 46

<10 42 <10 41 <10 46 <10 28 <10 36

<10 66 <10 55 <10 84 <10 83 35.90 <10 67

<10 62 <10 74 <10 52 <10 56 <10 33

<10 31 <10 55 <10 40

Method Analyte










ALS Chemex EXCELLENCE IN ANAl. YTlCAI. CHEMISTRY ALS Canada Ltd.


ME-XRF06 ME-XRF06 ME·XRF06 ME-XRF06 AI203 Fe203 CaO MgO

% % % % 0.01 0.01 0.01 0.01

11.74 12.18 11.05 10.73

1.54 10.23 0.83 36.56

2.14 13.49 3.14 31.90 5.33 10.43 11.30 20.31

2.21 12.89 2.75 33.64

ME-XRF06 Na20

% 0.Q1

2.09

0.18

0.19 0.82

0.12

Comments: NSS is non-sufficlent sample.

ME-XRF06 K20 %

0.01

0.16

0.02

0.03 0.51

0.02



ME-XRF06 ME-XRF06 ME-XRF06 ME-XRF06 ME-XRF06 ME-XRF06 Cr203 TI02 MoO P205 srO BaO

% % % % % %

0.01 0.01 0.01 0.01 0.01 0.01

0.12 0.62 0.18 0.06 0.03 0.Q1

0.34 0.09 0.09 <0.01 <0.01 <0.01

0.44 0.18 0.13 0.02 <0.01 <0.01 0.37 0.40 0.17 0.05 <0.01 0.01

0.34 0.17 0.19 0.02 <0.01 <0.01

Page: 3· C Total # Pages: 4 (A· D)


T805023205

ME-XRF06 ME-XRF06 WEI-21 LOI Total RecvdWI. % % kg

0.01 0.01 0.02

2.89 2.53 1.63

1.48 99.18 2.66 2.59

2.28 2.41 2.45 2.68

13.10 100.15 2.29

2.74 0.14 0.54

11.25 99.97 2.35 2.83 100.10 2.68

2.76 2.38 2.06 2.41 2.56

2.37 2.38 1.30 1.83 3.03

2.45 2.40 2.81

12.05 100.30 2.53 2.60

2.91 1.29 4.86 2.52 2.52

0.14 0.65 2.98 2.87 1.80

Method Anslyle Unite

Sample Description LOR



MCC04749 MCC04750 MCC04751

. MCC04752 MCC04753






ALS Chemex EXCELLENCE IN ANAL YTICAL CHEMISTRY ALS Canada Lid.



Ba Nb Rb Sr

ppm ppm ppm ppm

10 2 2 2

30 2 3 269

10 <2 2 9

10 2 3 12 100 4 14 46

10 2 2 16

ME·XRF05

Y

ppm

2

15

4

5 9

5


ME·XRF05

Zr ppm

2

32

<2

7 20

5


PrOject: ON635 050327 08


Page: 3 - D Total # Pages: 4 (A - D)


TB05023205

Method Analyte



ALS Chemex EXCELLENCE IN ANALYTICAL CHEMISTRY ALS Canada LId.


Au-AA24 Au-GRA22 ME-ICP61 ME-ICP61 Au Au Ag AI ppb ppm ppm %

5 0.05 0.5 0.01

<5 <0.5 7.35 <5 <0.5 7.56 <5 <0.5 6.29 <5 <0.5 8.22 10 <0.5 0.94

ME-ICP61

As

ppm

5

<5 <5 <5 <5 <5


ME-ICP61

Ba

ppm 10

630 190 440 310 <10




ME-ICP61 ME-ICP61 ME-ICP61 ME·ICP61 ME·ICP61 ME·ICP61

Be Bi Ca Cd Co Cr

ppm ppm % ppm ppm ppm

0.5 2 0.01 0.5 1 1

0.8 <2 2.73 <0.5 18 39 0.8 <2 2.77 <0.5 15 41 0.7 <2 2.69 <0.5 16 33 1.0 <2 2.01 <0.5 16 42

<0.5 <2 3.49 <0.5 94 1400

Page:4-A Total # Pages: 4 (A - D)


T805023205

ME-ICP61 ME-ICP61 ME-ICP61

Cu Fe K

ppm % % 1 0.01 0.01

39 5.13 1.89 71 4.51 0.44 94 5.00 1.10 32 3.43 0.64 25 7.78 0.01

Method AnalJle



ALS Chemex EXCELLENCE IN ANAL Y71CAl. CHEMISTRY ALS Canada Ltd,


ME·ICP61 ME·tCP61 ME-ICP61 ME·ICP61 Mg Mn Mo Na % ppm ppm %

0,01 5 1 0.01

3.44 1515 1 1.84 2.35 1245 1 3.50 2.19 1275 1 1.48 1.90 769 2 4.3 17.50 1180 1 0.06

ME·ICP61 Ni

ppm

1

40 46 32 47

1610


ME·ICP61 P

ppm

10

770 590 560 610 80



ME·ICP61 ME·tCP61 ME·ICP61 ME·ICP61 ME·ICP61 ME-tCP61

Pb S Sb Sf Ti V

ppm % ppm ppm % ppm

2 0.01 5 1 0.01 1

14 0.04 <5 226 0.47 162

79 0.30 <5 267 0.42 111

4 0.47 <5 343 0.37 118

12 0.14 <5 473 0.41 94 <2 0.05 <5 24 0.15 102

Page: 4· B Total # Pages: 4 (A - D)


TB05023205

ME·tCP61 ME-tCP61 ME-XRF06 W Zn Si02

ppm ppm % 10 2 0.01

<10 89 <10 111 <10 51 <10 82 <10 36

Method AlI.lyte




212 Brooksbank Avenue North Vancouver BC V7J 2C1 Phone: 604 984 0221 Fax: 604 984 0218

ME-XRF06 ME-XRF06 ME-XRF06 ME-XRF06 AI203 Fe203 CaO MgO

% % % % 0.01 0.01 0.01 0.Q1

ME·XRF06

Na20

% 0.01


ME·XRF06

K20

% 0.01


Project: ON635_050327 _o8 I CERTIFICATE OF ANALYSIS

ME·XRF06 ME-XRF06 ME·XRF06 ME-XRF06 ME-XRF06 ME-XRF06

Cr203 TI02 MoO P205 srO BaO

% % % % % % 0.Q1 0.01 0.01 0.01 0.01 0.01

Page: 4· C Total # Pages: 4 (A· D)


TBOS02320S

ME-XRF06 ME-XRF06 WEI-21

LOI Total RecvdWI.

% % kg

0.Q1 0.01 0.02

2.58 1.90 1.23 2.41 2.71

Method Analyte



ALS Chemex EXCELLENCE fN ANAL YTfCAl. CHEMfSTRY AlS Canada Ltd.

212 Brooksbank Allenue North Vancouver BC V7 J 2C1 Phone; 604 984 0221 Fax: 604 984 0218

ME-XRF05 ME·XRF05 ME-XRF05 ME-XRF05

Ba Nb Rb Sr

ppm ppm ppm ppm

10 2 2 2

ME·XRF05

Y

ppm

2


ME·XRF05

Zr ppm

2


Project: ON635 050327_08


Page: 4- D Total # Pages: 4 (A - D)


TB05023205

RUBICON MINERALS CORPORATION -DRILL LOG

HolalD: AL -05-07 Nortllilla lUTM16 NABlal 5666121.00 local oo-enl NortII con Silo: NQ2

Eaalilll [U1M15 NABlal 452033.00 IJI08I GHrd East Bovltbl [In] 366.00 Contractor: Hy-Tech Drilling

I.oIIUth [mJ 303.1 RIId LoeaaIn: I.OUIIDd Iy: C. Hoffe StartBata: March 17, 2005 End Bata: March 20, 2005

TESTS: _thm) TYJD/eon.nts ~ Az I eon.nts 0.00 Compass -50.00 110.00 I

21.00 Reflex -48.70 108.50 I 81.00 Reflex -48.50 106.10 I

141.00 Reflex -48.50 106.10 I 201.00 Reflex -48.60 102.00 I 261.00 Reflex -49.30 104.00 I 302.00 Reflex -49.20 105.30 I

21-Apr-05



0.00 10.50 Casing


Dark green, fine grained, basalt.

-Strong chI throughout and relatively unaltered.

-Weakly deformed with a weak fabric 50" to 60" to core axis.

-<10% calcite veining. The veins are generally <2cm to mm's and parallel to

foliation

-From 24.5m to 27. 75m are <5% qtz>cal veins. They are <5cm wide and

subparallel to foliation. They are also mineralized with trace py.

-From 32. 1m to 32.5m is a 1 cm wide vein comprised of fuchsite+red to yellow

opaque mineral along margins (possible hematite?). This red mineral seems to

halo around the vein and stain along the fractures. This vein is at a shallow

angle, 30" to core axis.

-From 32.55m to 32.95m is a large concentration of calcite veins cut by another

shallow angle, 1cm wide fuchsit+cal+red mineral vein.

-From 33.4m to 33.75m is an interval of more biotite altered basalt. Moderate

biotite alteration (60%), giving the interval a reddish brown color. At 33.5m

is a small breccia parallel to foliation.

-From -33. 8m to 33.9m is another <1cm wide cal+fuchsite+red mineral vein at

shallow angle to core axis.

-Mineralization includes trace to < 1 % fine grained diss and fracture filled

py.

21/04/2005



24.65 25.65 MCC04451 1.00 2.50

31.60 32.40 MCC04452 0.80 2.50

32.40 33.00 MCC04453 0.60 2.50

Page 1



-Gradational lower contact with more granular, chi rich basalt.

(@ 16.50 S1 50.00· >

(@ 29.50 S1 60.00· >

« Py O. 10%»

(@ 24.95 QV 60.00· 5.0Ocm

« 32.10- 32.50 FV 30.00· 1.0Ocm»

34.10 38.80 Chi Alt"d Basalt (Granular)

Dark green, fine grained, chi rich basalt.

-Strong chi and relatively unaltered. This unit has a granular, coarser grained

apearance, with irregular granular chi blebs <3mms in size. This just may be

the coarser grained interior to a flow.

-Weakly altered with a weak fabric 60· to core axis.

-5% cal veins <1cm parallel to foliation.

-At 36.65m is a 2 cm wide fuchsite+cal+hematite vein at 35° to core axis.

-The lower contact is gradational with the fine grained, chi rich basalts.

However, towards the lower contact the blebs of chi become more sheared

parallel to fabric.

(@ 35.50 S1 60.00° )

« CVs 5.00% 1.00cm»

« 36.65- 36. 70 cal+hematite FV 35. 00·»

38.80 42.35 Chi Alt"d Basalt

Dark green, fine grained, basalt.

-Strong chi throughout and relatively unaltered.

21/04/2005



Page 2

Project: Rubicon Red Lake Hole Number:AL-05-07

From To Rocktype & Description From (m To(m) Sample Width (m) Au (ppb)

-Weakly deformed with a vel)' weak fabric 65° to core axis (42.25m).

-<5% calcite veining. The veins are generally <2cm to mm's and parallel to

foliation

-At 42. 6m to 42.65m is a qtz vein with sharp upper and lower contacts 65° to

core axis. Trace cpy.

-Local hematite staining along fractures.

-Mineralization includes trace to <1% fine grained diss py.

-Gradational lower contact with more granular, chI rich basalt.

42.35 49.00 Chi Alt'd Basalt (Granular) 45.00 46.00 MCC04454 1.00 2.50 " .... ---

Dark green, fine grained, chI rich basalt. 46.00 47.05 MCC04455 1.05 2.50

-Strong chI and relatively unaltered. This unit has a granular, coarser grained

apearance, with irregular granular chI blebs <3mms in size. This just may be

the coarser grained interior to a flow.

-Weakly altered with a weak fabric 65° to core axis (47.8m).

-5% cal veins <1cm parallel to foliation.

-From 46. 85m to 47.05m are red hematite filled fractures.

-Mineralization includes 1 % py diss and often fracture filled.

-The lower contact is gradational with the fine grained, biotite and chI

altered basalts.

{@ 47.80 S1 65.00° >

« Py 1.00%»

49.00 70.70 Bt-Chl Alt'd Basalt 49.45 50.45 MCC04456 1.00 102.00

Dark brown>dark green>grey blue, biotite, chI and carb altered, fine grained 55.50 56.50 MCC04457 1.00 9.00

basalt. 59.55 60.55 MCC04458 1.00 2.50

60.55 61.05 MCC04459 0.50 5.00

-Strong biotite (50%), and local strong chi and carb alteration. The 61.05 62.05 MCC04460 1.00 15.00

21/0412005 Page 3



alteration is irregularly and discontinously banded with local bands of strong

biotite±carb (brown), strong carb (blue grey) and strong chi (grey). This

alteration gives this unit a very mottled apearance.

-Weakly deformed with a fabric 70 ° to core axis (58.9m).

-The strong biotite bands often have irregular, pink garnets <1cm in size.

-Local small calcite filled amygdules <1cm in size.

-5% calcite veining <Scm but averaging <1cm in size. They are parallel to

foliation and can be mineralized with trace py and po.

-From 60.65m to 60.7m is a large irregular/bleb like chllfuchsite and calcite

vein. It is mineralized with <1% cpy and trace py.

-From 61.8m to 62. Om is an interval with more intense py filled hairline

fractures. Py comprises 2% of this interval.

-From 67.05m to 67. 25m are a group of two qtz veins < 1 Oem thick with biotite

and chi altered basalt in between. This interval of basalt also contains lots

of 1cm wide pink garnets. The qtz veins have minor amounts of chi and ser? and

are mineralized with trace po and py. There is also trace po and py diss in the

adjacent wall rock. Theyare 70° to core axis.

-From 70. 25m to 70.4m are a group calcite veins parallel to foliation.

Mineralized with trace py and po.

-Sharp lower contact with qtz veined upper margin of a basaltic komatiite. 80°

to core axis.

« Bt 50.00%»

(@ 58.90 S1 70.0

« 61.80- 62.00 Py 2.00(

@ 67.05 QV 70.00° 10.00cm )

(@ 70.70 LeT 80.00° )


21/04/2005


From (m To(m) Sample Width (m) Au (ppb)

66.55 67.05 MCC04461 0.50 23.00

67.05 67.55 MCC04462 0.50 296.00

67.55 68.55 MCC04463 1.00 5.00

68.55 69.70 MCC04464 1.15 2.50

69.70 70.70 MCC04465 1.00 6.00

70.70 71.15 MCC04466 0.45 885.00

Page 4



Light to dark green, fine grained basaltic komatiite. 71.15 72.15 MCC04467 1.00 113.00

84.00 85.00 MCC04468 1.00 33.00

-Generally moderate to locally strong sericite and possible weak talc 94.00 94.50 MCC04469 0.50 11.00

alteration throughout. There are local inteNals of unaltered? rock which has a 94.50 95.50 MCC04470 1.00 14.00

dark black hue.

-It locally exhibits a fine to medium grained granular texture.

-Weakly altered with a fabric developed locally 60· to core axis (84.5m).

Generally the unit is massive with no aparent fabric.

-<2% calcite veining generally <2cm wide.

-<2% fuchsite carb veins at shallow angles to core axis.

-The core throughout this inteNal is somewhat broken with peices averaging

10em in size. A lot of the fractures contain smae amounts of clay gouge and chI

slicks.

-From 70.7m to 70.95m is a qtz veined zone with grey to white clear qtz, white

opaque calcite rimmed with light green chI or amph. This may be replaced ank

veining. It is mineralized with trace py and po.

-Fractures 77. 2m have chi slicks a small amount of gouge and are 65· to core

axis.

-From 81.05m to 82. Om the rock takes a reddish rusty hue and hematite can be

found along fractures.

-Increasingly more magnetic down-hole (95.6m to ultramafics).

-Gradational lower contact with ultramafics. Contact is possibly overprinte by

alteration?

(@ 84.50 S1 65.00· )

(@ 77.20 F1 65.00· )

95.50 96.50 MCC04471 1.00 20.00

21/04/2005 Page 5




Dark grey to black, fine grained ultramafics.

-Generally masiive black with spotty, light green talc alteration. There is a

lesser amount of local fuchsite alteration which gives the rock a yellow green

color.

-Strongly magnetitic.

-At 101.0m is a small <.5cm wide, shallow angle magnetite vein

- From 102.2m to 104.Bm the ultrmafics are a light grey color. Possible more

talc alteration?

-At 103.7m and 104.B5 are fuchsite filled veins.

-From 105.6m to 105.65m and 106.Bm are two small strongly bleached and

altered

intervals. They are filled with soft, chaulky, light green talc? and could be

possible faults they are BO° and 70° to core axis resectively.

-From 106. 1m to 107. 4m is local red hematite alteration.

-Sharp lower contact with light green basaltic komatiite.


Medium green, fine grained, basaltic komatiite.

-Fine grained with local slightly granular sections.

-Relatively unaltered

-Weakly deformed with a weak fabric 55° to core axis (10B.Bm).

-<2% calcite veining <1cm in size. BO° to core axis.

-Locally very weakly magnetic.

-Fairly sharp lower contact with fine grained ultramafic.

21/04/2005


From(m To(m) Sample Width (m) Au (ppb)

96.50 97.50 MCC04472 1.00 24.00

105.00 106.00 MCC04473 1.00 2.50

106.00 107.00 MCC04474 1.00 2.50

107.00 108.10 MCC04477 1.10 13.00

109.00 110.00 MCC04478 1.00 2.50

Page 6



113.90 114.55 Fine grained UM?

Dark green, vel}' fine grained, ultramafic?

-Vel}' fine grained with 5% small <3mm wide, grey-brown blebs (possible

biotite). They are vel}' soft and locally have sub mm sized rims of a lighter

mineral. They are irregular in shape fom spheres to vel}' angular.

-Moderately magnetic.

-This unit is vel}' soft but is probably not talc, possibly sericite? -The unit

becomes a much lighter green color towads the lower contact.

-The lower contact is fairly sharp with a more granular ultramafic.

114.55 116.85 UM (granular)

Dark black to dark geen, granular ultramafic.

-Locally light green to grey, soft alteration. Locally a light green Iteration

which is possible fuchsite. Local patches of hematite stain and hematite filled

hairline fractures.

-Generally the unit is soft but probably not talc.

-Exhibits a granular texture.

-Moderately deformed with a weak fabric 60 0 to core axis (116. 65m)

-Increase in light grey alteration towards the lower contact.

-Lower contact is sharp with a basaltic komatiite.

(@ 116.65 S1 60.00 0 )


Light grey green, fine grained, massive basaltic komatiite.

21/0412005

Hole Number: AL-OS-07


114.55 115.55 MCC04479 1.00 8.00

Page 7



-Fine grained granular texture.


-Weakly deformed with a weak fabric 80· to core axis (117.45m).

-Sharp lower contact with a more biotite, chlorite and carb altered basalt?

(@ 117.45 S1 80.00· )


Dak green to light brown, fine grained basalt?

-Moderate biotite (40%), moderate chi (40%) and minorcarb (20%) alteration.

The alterations are intermingled giveing this intervla a mottled apearance.

-Sharp upper and lower contacts with the lower contact 75· to core axis.

-Not magnetic.


Ught grey green to medium dark green, fine grained basaltic komatiite.

-Generally fine grained with local small intervals of more granular textured

komatiite.

-Relatively unaltered with local moderate sericite? alteration. There are

intervals of a pale green alteration possible sericite?

-<2% calcite veins <1cm wide and moderate to steep angle to core axis.

-Weakly to moderately deformed with a fabric 80· to core axis (125.30m)

-Generally moderately magnetic with local intervals non-magnetic.

-From 119.8m to 120.65m the komatiite is a dark grey to black color.

-From 120.65m to 121.25m the core is very broken and towards the upper margin

21/0412005



118.50 119.50 MCC04480

127.50 128.50 MCC04481

Width (m)

1.00

1.00

Au (ppb)

5.00

2.50

Page 8


has fault gouge, carb and new blueish white mineral along fractures.

-Gadational? lower contact with a more coarser grained basaltic komatiite.

-Trace py diss throughout

( @ 125.30 S1 80.00· )

« Py O. 10%»

130.50 135.55 Basaltic Komatiite (Granular?)

Dark grenn, granular, massive baslatic komatiite.

-Coarser more intrusive texture than the previous unit.

-Local grains are weakly biotite altered, but generally this unit appears

unaltered.

-Non-magnetic.

-Local hairline fractures filled with dark green black mineral.

-Sharp lower contact with fault zone 80· to core axis.

(@ 135.55 LCT 80.00·)

135.55 136.40 Fault Zone (Basaltic Komatiite)

Light green grey, fine grained, stongly faulted basaltic komatiite.

-Very broken and rubbly core with a large amount of clay to sandy fault gouge

at the upper margin

-Most fractures average 60· to core axis.

-Broken lower contact with ultramafic.

( @ 135.75 FL T 60.00· )

136.40 137.00 Fault Zone (Spinfex?)

Dark black, fine grained, faulted, massive ultramafics?

21/04/2005


From {m To (m) Sample Width (m) Au (ppb)

130.50 131.50 MCC04482 1.00 2.50

Page 9



-<5% spotty, light green alteration.

-Possible spinifex texture.

-Strongly faulted and boken with carb and blue mineral along fractures. Core

averages <Scm peices.

-Also along these fractures is a metallic, brassy, needle mineral. Possible

py??

137.00 138.45 Ultramafic

Dak black, fine grained, massive ultramafics.

-Core is still very broken unitl137.6m.

-Light buff green, soft alteration spotted throughout (possible alteration of

olivine). Local patches of red hematite stain and hematite filled fractures.

-Spinifex texture throughout.

-Strongly magnetic.

-From 137.6m to 137. 8m ae a few serpentine?lchl filled veins.

-Sharp lower contact with strongly sericite? and mag rich interval.

138.45 138.65 Alt'd Ultramafics

Light green, fine grained, schisty looking ultramafics? Maybe a dyke?

-Strongly altered, very light green and soft.

-Fine grained with 10%, mm sized grains of mag.

-Sharp upper and lower contact.


Dark green, fine grained basaltic komatiite.

21/04/2005



140.05 141.00 MCC04483

144.00 145.00 MCC04484

Width (m)

0.95

1.00

Au (ppb)

5.00

2.50

Page 10



-Relatively unaltered with local hematite staining towardsthe uphole contact.


-Fine grained to granular.

-Weakly deformed with a fabric 80· to core axis (141. 1m).

-At 142.7m is a 2cm wide gougey fault 80· to core axis.

-Fairly sharp lower contact with dark grey coarser grained basaltic komatiite.

(@ 141.10 8180.00·)

(@ 142.70 FLT 80.00· 2.00cm)

146.70 155.55 Basaltic Komatiite (Granular)

Dark grey to black, medium grained basaltic komatiite.

-Much more granular texture than previous unit. It has an intusive appearance.

-Relatively unaltered with a consistant dak green-black color throughout.

-Local granular leucoxene in matrix of komatiite.

-<5% irregular sugary calcite veins throughout.

-1-2% fine grained diss py throughout.

-From 153. 8m to 154.5m are 5% local py, chI and carb filled fractures.

-Fairly sharp lower contact with lighter green, finer grained basaltic

komatiite.

( Py 1.00-2.00%»


Light to medium green, fine grained basaltic komatiite.

21/04/2005



150.00 151.00 MCC04485

151.00 152.00 MCC04486

152.00 153.00 MCC04487

153.00 154.00 MCC04488

154.00 155.10 MCC04489

159.80 160.30 MCC04490

160.30 160.80 MCC04491

Width (m)

1.00

1.00

1.00

1.00

1.10

0.50

0.50

Au (ppb)

11.00

8.00

11.00

56.00

77.00

9.00

9.00

Page 11



-Weakly altered (lighter green color) and fairly soft possible sericite? or

amphibole? Local weak biotite alteration from 156.3m to 156.9m.

-Very massive throughout.

-From 160.6m to 160. 8m are a few discontinous and iregular small qtz veins.

Mineralized with trace py and possible cpy. Also, in this interval is a very

small amount of biotite alteration and more apparent deformation with a weak

fabric 90· to core axis.

(@ 160.70 S1 90.00· >

« Py O. 10%»


Dark brown to dark green, fine grained basalt?

-Moderate to strong biotite alteration (60%) and moderate to weak chI

alteration «25%). Weak carb alteration «15%). The alteration is observed as

iregular discontinous bands giving this unit a mottled appearance. The biotite

alteration is concentrated from 160. 8m to 163m and there is an increase in chi

from 163. Om to 163.65m

-Weak deformation with a weak fabric 80· to core axis (162. 8m)

-<1% calcite qtz veins parallel to foliation.

-Gradational lower contact with a granular basaltic komatiite.

(@ 162.80 51 80.00· )

« Bt 60.00%»

« ChI 25.00%»

« Carb 15.00%»

« CQVs 1.00%»

163.65 167.25 Basaltic Komatiite? (Granular)

21/04/2005



160.80 161.80 MCC04492 1.00 8.00

164.00 165.00 MCC04493 1.00 6.00

Page 12


Dark green, medium to coarse grained, basaltic komatiite?

-Relatively unaltered with a dark green color consistant throughout.

-<1% intemtital calcite? mm's in size at 166. 75m to 166. 85m.

-1% py diss throughout and <1% diss magnetic po diss throughout.

-Fairly sharp lower contact with lighter green, finer grained basaltic

komatiite.

« Py 1.00%»

« Po 1.00%»


Dark green, fine grained, massive basaltic komatiite.

-Relatively unaltered and chI rich.

-Finer grained than the previous unit.

-From 169. 25m to 169.35m is a small dark grey very fine grained dyke with sharp

upper and lower contacts 80· to core axis.

-<1 % fine grained diss py.

-Sharp lower contact with dyke 70· to core axis.

( @ 170.20 LeT 70.00· )

« Py 1.00%»

170.20 170.50 Diorite Dyke

Dark grey, very fine grained diorite to mafic dyke.

-Very fine grained and massive.

-Weakly magnetic.

-<1 % fine grained diss po? or p y.

21/0412005



Page 13



-Sharp lower contact 65· to core axis.

( @ 170.50 LCT 65.00· )

« Po 1.00%»


Dark green, fine grained, massive basalti komatiite.

-Fine grained and massive throughout.

-Relatively unaltered and chI rich. Consistant dark green color throughout.

-No apparent fabric.

-At 171.65m is a small, <5cm, qtz vein 70° to core axis. It is mineralized with

trace py.

-Trace to < 1 % fine grained diss py throughout.

-Sharp lower contact with qtz feldspar porphyry dyke 65° to core axis.

(@ 171.65 QV 70.00· 5.00cm)

« Py 0.10-1.00%»

( @ 175.50 LCT 65.00° )

175.50 176.00 Felsic Tuffaceous Sediment

Dark to light grey, crystal rich felsic tuffaceous sediment.

-Fine grained, silicious, dark to light grey matrix with 20% qtz and feldspar

crystals. The crystal are <.5cm in size. irregular, and increase in intensity

towards the lower contact.

-The unit becomes lighter in color, more silicious towards the lower contact.

-Local pink potassic alteration.

-No apparent mineralization.

21/04/2005



171.00 172.00 MCC04494 1.00 2.50

175.50 176.00 MCC04496 0.50 2.50

Page 14



176.00 177.35 Mafic Tufaceous Sediment

Dark grey to dark green, fine grained, mafic tuffaceous.

-Generally fine grained and massive throughout.

-Dark grey in color until 184. 85m then it changes to medium green and is more

chI rich/altered?

-Patchy weak biotite alteration from 176.0m to 177.35m.

« 188.65- 188.80 Py 5.00%»

« 189.80- 190.00 Py 5.00%»

(@ 182.00 S1 65.00°)


Dark green, fine grained, basaltic komatiite.

-Weakly deformed with a weak fabric 65° to core axis (182. Om).

-From 183. Om to 183.4m are hematite, chi and carb filled fractures.

188.15 192.95 Felsic and Mafic Tuffaceous Sedimen

Dark green to light grey purple, fine grained felsic and mafic tuffaceoLis

sediment.

-From 188.5m to 190.7m is an increase in biotite alteration and mineralization.

Moderate to strong biotite alteration and moderate carb alteration.

Mineralization is comprised offracture filled py and fine grained py. It is

mostly concentrated within strong biotite alteration from 188.65m and 188. 8m

and from 189. 8m to 190. Om.

21/04/2005



181.00 182.00 MCC04497

187.50 188.50 MCC04498

188.50 189.50 MCC04499

189.50 190.00 MCC04652

190.00 190.70 MCC04653

190.70 191.70 MCC04654

191.70 192.00 MCC04655

192.00 192.75 MCC04656

Width (m)

1.00

1.00

1.00

0.50

0.70

1.00

0.30

0.75

Au (ppb)

2.50

6.00

24.00

6.00

2.50

2.50

2.50

2.50

Page 15



From 190.7m to 192.95m fine grained, dark grey to purplish, silicious matrix

with 25% qtz and feldspar crystals. The phenocrysts are <.5cm, irregular and

fairly evenly dispersed. The qtz phenos are often blue in color and the

feldspars are pink to white in color. From 191.7m to 192. 1m is an interval of

more altered, silicifed and mineralized tuff. The mineralization is comprised

of 5%, fine grained diss and fracture filled py. Total mineralization includes

1-2% diss and fracture filled py throughout.



-Relatively unaltered with strong chi throughout.

-Consistant dark green color throughout.

-Gradational lower contact.

194.30 197.15 Sheared Basalt/Porphyry Zone?

Dark green, fine grained basalt (possible mafic tuff) with sheared porphyry

dyke frags.

-Fine grained, green basalt or possible tuff with 20% cabonate lenses and 5%

qtz feldspar porphyry frags. This may be a shear zone where small cm wide

porphyry dykelets have been sheared out to form discontinous, elongate and

pinched pophyry boudins parallel to foliation.

-Moderate deformation with a strong fabric 80· to core axis (195.2mJ.

-This unit has a banded appearance with irregular alternating carb, chi and

biotite lenses. The biotite is mostly observed as wispy bands parallel to

fOliation.

21/04/2005

Hole Number:AL .. 05 .. 07


Page 16



-<1% py diss throughout.

-Fairly sharp lower contact with less deformed, unaltered and porphyry free

basalt?

< @ 195.20 S1 80.00° >

« Py 1.00%»


Dark green, vey fine grained, massive basalt.

-Relatively unaltered except for a small amount of local weak biotite

alteration. The biotite is found in 1cm wide wispy bands parallel to foliation

and comprises 2-3% of this interval.

-5% white, sugary calcite veins <2cm wide and parallel to foliation.

-Weaklly deformed with a fabric 70° to core axis (203.1 my.

-At 200. 1m is a smal calcite qtz vein with garnets and tourmaline.

-From 206.35m to 206. 8m the core is heavily fractured casing a coarse poker

chip apearance (2cm wide poker chips). There is a carb and fuchsite rich gouge

and slicks along these fractures. The fractureslfaults have an average

orientation of 80° to core axis.

-<1% fine grained py diss throughout.

-Lower contact is faulted.

« Bt 2. 00-3. OO%)}

< @ 203.10 S1 70.00° }

< @ 206.60 FLT 80.00° }

« Py 1.00%}}


I 21/04/2005



205.80 206.80 MCC04657 1.00 12.00

206.80 207.80 MCC04658 1.00 24.00

Page 17



Medium grey green, fine grained, basaltic komaWte.

-Slightly altered (light green, soft, possible sericite) decreasing from the

upper contact down-hole.

-From 206. 8m to 206.85m is a strongly bleached, light green fault. 1cm wide

gouge zone along lower margin. It is 65° to core axis.

-Gradational, possible sheared, lower contact with ultramafics.

(@ 206.80 FLT 65.00° 5.00cm)


Dark black to dark green, medium grained, ultramafics.

-Medium to coarse grained intrusive texture.

-Fuchsite altered.

-Very weakly deformed.

-<1% Irregular carb and fuchiste filled, hairline veinlets.

-Moderate to locally strongly magnetic with 1% mag diss throughout.

-Local hematite staining and it is also found with some magnetite.

-From 210.6m to 210.8m is a fine grained, dark grey, intermediate dyke.

(possible finer grained porphyry). Sharp upper and lower contacts 65° to core

axis.

-From 211.9m to 212. Om is an interval of gougey rubbly material.

-Lower contact with a dyke is faulted. From 214.85m to 215.05m is a strongly

bleached nd gougey fault zone. It is strongly deformed and is the lower contact

with the dyke.

« Mag 1.00%»

215.05 215.75 Intermediate? Dyke

21/04/2005



212.00 213.00 MCC04659 1.00 5.00

Page 18



Dark grey with purple hue, fine grained, intermediate? dyke.

-It is generally massive, but it is very broken throughout with a faulted upper

and a broken (possible faulted) lower contact.

-There are shallow angle fuchsite chi veins throughout.

-There is a large amount of fault gouge at 215. 4m. Just before this fault gouge

is a broken qtz vein and very coarse biotite.

-Trace py in veins.

-Broken lower contact with ultramfaics.

« Py O. 10%))


Dark black to dark green, medium to coarse grained ultramafics.

-Fairly massive throughout ranging from a medium to coarse grained intrusive

texture.

-Very weakly deformed.

-Locally fuchsite and hematite altered. Local patches of light creamy green

alteration, possible sericite?

-Moderate to strongly magnetic.

-From 219.85m to 220. 15m is a small, fine grained intermediate? dyke. Sharp

upper and broken lower contacts. It is cut by shallow angle, fuchsite and

hematite filled fractures.

-From 232.6m to 233.6m is a section of very granular ultramafic with hemaitie

alteration? It appears the magnetite is being replaced by hematite.

-At 233. 6m are small, carb and mag filled hairline fractures.

-From 237.6m to 238. 8m the ultramafic is extremely altered. It is a light grey

to buff green color and weakly silicified with local soft areas.

21/04/2005



231.00 232.00 MCC04660 1.00 2.50

Page 19

Project: Rubicon Red Lake From To Rocktype& Description

-From 238. 8m to 239. 1m is strong biotite altered ultramafic??


Dark purple to light green, fine grained qtz feldspar porphyry.

-Locally moderately to strongly sericite altered.

-Fine grained dark grey to light green matrix with 20%, <.5cm, qtz and feldspar

phenocrysts.

-Weakly to moderately deformed.

-At 239. 75m is a 1 cm wide gougey fault at 85 0 to core axis.

-Sharp lower contact with intermediate? dyke at 80 0 to core axis.

< @ 239.75 FL T 80.00 0 85.00cm)

LC< @ 241.40 LCT 80.00 0 )

241.40 241.75 Intermediate? Dyke

Dark grey, fine grained intermediate? dyke.

-Massive

-Sharp lower contact 85 0 to core axis.

(@ 241.75 LCT 85.00 0 )


Dark purple, fine grained, qtz feldspar porphyry.

-Dark purple-grey fine grained matrix with 25-30%, <.5cm wide qtz and feldspar

phenocrysts. At 253. 3m the concentration of phenocrysts increases to 30-40%.

21/04/2005



239.55 240.55 MCC04661 1.00 2.50

241.75 242.75 MCC04662 1.00 2.50

242.75 243.75 MCC04663 1.00 2.50

248.10 249.10 MCC04664 1.00 2.50

249.10 250.10 MCC04665 1.00 2.50

250.10 251.10 MCC04666 1.00 2.50

Page 20



-Weakly biotite altered, locally potassic altered (generally halos around late

shallow fractures), and locally sericite altered.

-Trace fine grained, diss py throughout with localized concentrations up to 1%.

There are also local py filled hairline fractures.

-Very weak deformation.

-At 248. 8m may be trace aspy.

-From 253.3m to 259.9m are 5-10% small, mm sized pink garnets.

-From 254. 1m to 255. 1m is mineralized with <1% fine grained diss pyand

possible trace aspy. Py

-From 261.40m to 263.25m are local lenses <15cm thick of sericite, feldspar and

silica? alteration.

-From 263.25m to 273.75m The unit becomes lighter in color due to an increase

in silica and an increase in phenocrysts. There is also more potaSSiC

alteration and it's minerlaized with <1%py. It has a more mottled appearance

than the upper poriion of the unit.

-From 273.35m to 273.5m is a small lens of chi rich, fine grained basalt.

-Sharp lower contact with chi rich basalt at 70° to core axis.

(@ 273.75 LCT 70.0

« 254.10- 255.10 Aspy O. 10

« Py 1.00%»



-Relatively unaltered, chi rich basalt. Consistant dark green color

throughout.

21/0412005



251.10 252.10 MCC04667

252.10 253.35 MCC04668

253.35 254.10 MCC04669

254.10 255.10 MCC04670

255.10 256.10 MCC04671

256.10 257.10 MCC04672

257.10 258.10 MCC04673

258.10 259.10 MCC04674

259.10 260.10 MCC04677

260.10 261.10 MCC04678

261.10 262.10 MCC04679

262.10 263.15 MCC04680

263.15 264.15 MCC04681

264.15 265.15 MCC04682

265.15 266.15 MCC04683

266.15 267.15 MCC04684

267.15 268.15 MCC04685

268.15 269.15 MCC04686

269.15 270.15 MCC04687

270.15 271.15 MCC04688

271.15 272.15 MCC04689

272.15 273.35 MCC04690

274.80 275.80 MCC04691

Width (m)

1.00

1.25

0.75

1.00

1.00

1.00

1.00

1.00

1.00

1.00

1.00

1.05

1.00

1.00

1.00

1.00

1.00

1.00

1.00

1.00

1.00

1.20

1.00

Au (ppb)

2.50

2.50

2.50

2.50

2.50

2.50

2.50

2.50

2.50

31.00

8.00

2.50

2.50

41.00

36.00

7.00

2.50

6.00

2.50

2.50

11.00

2.50

2.50

Page 21



-At 274. 3m is a small gouge filled fracture 75° to core axis.

-At 274. 7m is a small2cm wide porphyry dykelet

-Broken lower contact with q tz feldspar porphyry.

(@ 274.30 FLT 75.00· )

274.85 278.90 Qtz Feldspar Porphyry

Dark grey with a purple hue, qtz feldspar porphyry.

-Matrix is fine grained, silicious, purple and there are 30-40%, <.5cm wide qtz

and feldspar phenocrysts.

-Weakly biotite altered.

-Weakly deformed.

-There are local patches of grey to white porphyry, this is propably late

silicification? .

-<1% diss and fracture filled py throughout.

-Lower contact appears chilled and is broken.

« Py 1.00%»


Medium grey green, fine grained, basaltic komatiite.

-Fine grained with local granular sections.

-Relatively unaltered, chi rich, with a consistant medium grey-green color

throughout.

-From 282. 85m to 282.95m is a sericite? rich interval mineralized with <1% py

and has a red hematite stain.

-From 283. Om to 283. 1m is another strongly sericite altered interval possible

21/04/2005


From (m To(m) Sample

275.80 276.80 MCC04692

276.80 277.80 MCC04693

277.80 279.00 MCC04694

282.65 283.65 MCC04695

290.50 291.50 MCC04696

Width (m)

1.00

1.00

1.20

1.00

1.00

Au (ppb)

2.50

2.50

2.50

2.50

18.00

Page 22



fault.

-Sharp lower contact with qtz feldspar porphyry.


Dark grey with a purple hue, qtz feldspar porphyry.

-Matrix is fine grained, silicious, purple and there are 40%, <.5cm wide qtz

and feldspar phenocrysts.

-Weakly biotite altered.

-Weakly deformed.

-<1% diss and fracture filled py throughout.

-From 298.5m to 299.5m is a section of very strongly potassiC (feldspar)

altered porphyry. The alteration appears to be associated with small, hairline

fractures at various orientations to core axis. The alteration forms large

halos around the fractures.

-Core is very broken from 299.3m to 299.70m

-Lower contact appears chilled and is broken.

« Py 1.00%»

299.70 303.10 Felsic Dyke (Aphyrlc)

Dark purple, very fine grained felsic dyke?

-Core is very broken and rubbly throughout the entire unit.

-Locally fractured at shallow angle to core axis and often the fractures are

altered with epidote and k-spar.

-Small pinky orange phenocrysts, <.5cm in size often epidote associated with

them.

-Trace diss py.

21/04/2005



297.50 298.50 MCC04697

298.50 299.50 MCC04698

Width (m)

1.00

1.00

Au (ppb)

137.00

2.50

Page 23



I _ .. -. ~ ... _. I -- I _ ...

I THE END.

. .. .....

303.10 303.10 EOH 1-· _ ... ,._ .. -1- --! .. -

I

I

I

I

I

I

I

I I

I

I

I

I

I

I

I

21/04/2005 Page 24




Page: 1 Finalized Date: 12-APR·2005

Account: MUC

CERTIFICATE TB05023206 SAMPLE PREPARATION


P.O. No.:

This report is for 97 Drill Core samples submitted to our lab in Thunder Bay, ON, Canada on 1-APR-2005.

The following have access to data associated with this certificate: DAVID ADAMSON TERRY BURSEY MICHAEL GRAY

GARFIELD MCVEIGH LARRY POZNIKOFF IAN RUSSELL 31CON - RED LAKE WEB ACCOl

To: RUBICON MINERALS CORPORATION ATTN: LARRY POZNIKOFF 1540-800 W PENDER ST VANCOUVER BC V6C 2V6

ALSCODE

WEI-21

LOG-22 LOG-24

CRU-32

SPL-21 PUL-32

ALSCODE

Au-AA24 Au-GRA22

ME-ICP61 ME-XRF05 ME-XRF06

OA-GRA06

This is the Final Report and supersedes any preliminary report with this certificate number. Results apply to samples as submitted. All pages of this report have been checked and approved for release.

DESCRIPTION

Received Sample Weight

Sample login - Red wlo BarCode Pulp Login - Rcd wlo Barcode

Fine Crushing 90% <2mm

Split sample - riffle splitter Pulverize 1000g to 85% < 75 um

ANALYTICAL PROCEDURES DESCRIPTION INSTRUMENT

Au 50g FAAA finish AAS

Au 50g FA-GRAVfinish WST-SIM

27 element four acid ICP-AES ICP-AES

Trace Level XRF Analysis XRF

Whole Rock Package - XRF XRF

LOI for ME-XRF06 WST-SIM

Signature:

Method Analyte

Unita Sample Description LOR









ALS Chemex EXCELLENCE IN ANALYTICAL CHEMISTRY ALS Canada Ltd.

212 Brooksbank Avenue North Vancouver BC V7 J 2C1 Phone: 6049840221 Fax: 604 984 0218

Au·AA2.4 Au·GRA22 ME·ICP61 ME·ICP61

Au Au Ag AI ppb ppm ppm %

5 0.05 0.5 0.01

<5 <0.5 6.95 <5 <0.5 7.65 <5 <0.5 6.99 <5 <0.5 8.04 <5 <0.5 7.54

102 <0.5 6.78 9 <0.5 7.51 <5 <0.5 8.47 5 <0.5 8.08 15 <0.5 7.95

23 <0.5 7.51 296 <0.5 6.69 5 <0.5 7.23

<5 <0.5 7.83 6 <D.5 7.69

885 <0.5 3.25 113 <0.5 4.85 33 <0.5 3.21 11 <0.5 6.72 14 <0.5 7.21

20 <0.5 2.92 24 <0.5 1.65 <5 <0.5 0.79 <5 <0.5 0.74

4530 4.59

<5 13 <0.5 0.81 <5 <0.5 5.77 8 <0.5 1.59 5 <0.5 3.08

<5 <0.5 3.90 <5 <0.5 7.89 5 <0.5 2.42

<5 <0.5 3.37 11 <0.5 8.02

8 <0.5 8.45 11 <D.5 8.07 56 <0.5 8.00 77 <0.5 8.08 9 <0.5 5.24

ME·ICP61

As ppm

5

<5 <5 <5 <5 <5

<5 <5 6 5

<5

10 5 <5 6 <5

59 16 <5 <5 <5

<5 6 61 34

19 <5 5 25

<5 5 6

29 <5

<5 <5 <5 <5 <5

ME·ICP61

8a ppm

10

50 40 50 20 20

210 270 270 300 340

200 230 180 230 470

70 80

<10 90 100

<10 <10 <10 10

<10 60 20 <10

20 130 <10 <10 80

90 80 110 150 <10

To: RUBICON MINERALS CORPORATION 1540-800 W PENDER ST VANCOWER BC V6C 2V6



Be 81 Ca Cd Co Cr


0.5 2 0.01 0.5 1 1

<0.5 <2 5.47 <0.5 46 79 <0.5 <2 6.83 <0.5 44 74 <0.5 <2 9.12 <0.5 38 66 <0.5 <2 6.73 <0.5 45 121 <0.5 <2 6.63 <0.5 47 132

<0.5 <2 9.05 <0.5 38 77 <0.5 <2 8.09 <0.5 45 144 <0.5 <2 6.04 <0.5 54 120 <0.5 <2 6.60 <0.5 45 94 <0.5 <2 2.70 <0.5 51 116

<0.5 <2 6.42 <0.5 43 87 <0.5 <2 4.05 <0.5 38 79 <0.5 <2 4.82 <0.5 44 116 <0.5 <2 4.53 <0.5 45 119 <0.5 <2 5.23 <0.5 45 99

<0.5 <2 11.70 <0.5 64 1335 <0.5 <2 8.98 <0.5 59 924 <0.5 <2 5.16 <0.5 77 1580 <0.5 <2 5.02 <0.5 44 74 <0.5 <2 5.87 <0.5 51 129

<0.5 <2 8.19 <0.5 81 981 <0.5 <2 1.47 <0.5 96 1315 <0.5 <2 0.55 <0.5 51 851 <0.5 <2 0.61 <0.5 94 929

<0.5 <2 0.51 <0.5 114 997 <0.5 <2 5.29 <0.5 53 226 <0.5 <2 2.78 <0.5 90 1100 <0.5 <2 6.85 <0.5 69 1550

<0.5 <2 8.54 <0.5 52 794 <0.5 <2 5.51 <0.5 51 40 <0.5 <2 3.68 <0.5 87 1320 <0.5 <2 4.43 <0.5 105 1200 <0.5 <2 6.90 <0.5 40 49

<0.5 <2 7.03 <0.5 43 43 <0.5 <2 6.69 <0.5 43 32 <0.5 <2 6.84 <0.5 50 23 <0.5 <2 5.50 <0.5 66 16 <0.5 <2 6.36 <0.5 88 659



TB05023206


Cu Fe K

ppm % % 1 0.01 0.01

150 8.98 0.39 167 9.49 0.56 112 8.23 0.99 150 9.54 0.07 132 9.53 0.21

150 8.31 1.29 115 8.44 0.73 183 9.89 0.88 147 8.24 0.98 182 9.13 1.56

150 8.77 1.46 146 8.69 1.00 150 9.77 0.64 136 9.24 0.93 138 6.61 1.85

95 6.69 0.41 55 7.86 0.38 65 7.05 0.01 87 7.36 0.28

290 9.26 0.34

156 7.01 0.03 97 6.43 <0.01 1 7.19 <0.01

<1 6.40 0.01

11 6.01 <0.01 112 8.53 0.13 108 6.73 0.01 33 6.95 0.01

96 6.87 0.07 141 8.05 0.25 21 7.01 0.01

236 8.80 0.01 152 7.18 0.23

73 7.45 0.24 108 7.43 0.23 277 8.53 0.37 818 10.55 0.40 62 8.98 0.05

MetIlod Analyta

UnIt. Sample Description LOR









ALS Chemex EXCELLENCE IN ANALYTICAL CHEMISTRY ALS Canada Lid.


ME·ICP61 ME-ICP61 ME·ICP61 ME-ICP61 Mg Mn Mo Na

% ppm ppm %

0.01 5 1 0.01

4.37 1185 <1 1.26 4.19 1615 <1 1.95 3.78 1290 <1 1.16 4.70 1560 <1 1.43 4.78 1555 <1 1.31

5.47 2120 <1 0.21 4.57 1475 <1 0.80 3.76 2040 <1 0.75 4.31 1780 <1 0.62 3.31 1475 <1 0.44

3.88 2570 <1 0.31 3.59 1590 <1 0.23 3.73 1890 <1 0.88 3.42 1580 <1 0.66 4.17 1645 <1 0.35

7.22 2050 <1 0.13 7.74 1630 <1 0.22 13.30 1165 <1 0.09 5.72 1265 <1 2.94 6.65 1395 <1 1.90

12.95 1055 <1 0.23 20.1 1140 <1 0.01 21.2 464 <1 0.01 19.55 525 <1 0.01

19.50 632 <1 0.D1 6.70 1440 <1 1.92 17.95 911 <1 0.05 13.10 1320 <1 0.23

9.95 1325 <1 1.08 5.57 1360 <1 3.35 17.25 1270 <1 0.08 14.05 1175 <1 0.11 4.22 1500 <1 3.09

4.62 1740 <1 2.82 4.30 1630 <1 2.86 4.38 1750 1 3.01 4.34 1735 <1 3.16 12.55 1520 <1 0.25

ME-ICP61 Ni

ppm

1

116 114 91 91 91

70 124 102 105 124

97 57 108 105 96

581 416 976 81 122

971 1810 2170 2190

2140 124 1670 561

213 92

1475 757 66

73 68 61 58

569

ME·ICP61 P

ppm

10

630 540 430 420 430

430 350 520 490 510

470 560 470 380 440

90 170 80 160 150

110 30 10 20

20 100

1040 60

80 120 20

110 250

210 200 240 420 180

To: RUBICON MINERALS CORPORATION 1540-800 W PENDER ST VANCOWER BC V6C 2V6



ME-ICP61 ME-ICP61 ME-ICP61 ME·ICP61 ME·ICP61 ME-ICP61 Pb S Sb Sr Ti V

ppm % ppm ppm % ppm

2 0.01 5 1 0.01 1

25 0.07 <5 113 0.69 314 18 0.16 <5 112 0.73 323 4 0.15 <5 111 0.62 293 9 0.08 <5 125 0.63 303 5 0.07 <5 123 0.64 317

<2 0.22 <5 47 0.59 287 5 0.15 <5 86 0.57 284 2 0.36 <5 68 0.75 346

<2 0.11 <5 81 0.70 329 13 1.10 <5 65 0.71 321

5 0.14 <5 62 0.70 337 4 0.40 <5 51 0.79 331 6 0.16 <5 86 0.68 327 2 0.17 <5 57 0.66 312 8 0.43 <5 61 0.64 311

4 0.29 <5 63 0.16 116 4 0.14 <5 110 0.28 187 5 0.21 <5 19 0.15 133

<2 0.07 <5 97 0.34 258 4 0.05 <5 87 0.34 269

<2 0.12 <5 32 0.11 120 <2 0.11 <5 4 0.08 74 <2 0.08 <5 6 0.04 40 <2 0.10 <5 7 0.04 37

<2 0.12 <5 7 0.04 39 <2 0.01 <5 67 0.26 246 <2 0.12 <5 29 0.26 70 <2 0.03 <5 22 0.14 157

<2 0.01 <5 32 0.19 199 <2 0.02 <5 119 0.29 251 <2 0.01 <5 32 0.10 110 <2 0.11 <5 12 0.18 134 <2 0.13 <5 138 0.38 233

<2 0.02 <5 151 0.39 263 <2 0.02 <5 154 0.38 265 4 0.47 <5 166 0.46 289 5 1.18 <5 172 0.61 321

<2 0.02 <5 34 0.29 204

Page: 2- B Total # Pages: 4 (A - D)


TB05023206

ME-ICP61 ME-ICP61 ME-XRF05 W Zn Nb

ppm ppm ppm

10 2 2

<10 104 <10 104 <10 77 <10 98 2 <10 96

20 55 <10 89 20 112 20 82 60 72

10 93 40 134 20 127 20 102 20 100

20 132 <10 76 <10 65 <2 <10 77 <10 94

<10 78 <10 112 <10 33 <10 26 2

<10 26 <10 113 <10 44 <10 69

<10 52 <2 <10 66 <10 73 <2 <10 83 <10 78

<10 80 <10 95 <10 81 <10 78 <10 72

Methoif Analyte










ALS Chemex EXCEI.l.ENCE IN ANAL YTICAL CHEMISTRY AL8 Canada L1d.


ME·XRF05 ME-XRF05 ME-)(RF05 ME·XRF06 Rb Y Zr 8102

ppm ppm ppm % 2 2 2 0.01

2 27 60 49.51

<2 7 6 44.24

2 4 <2 36.19

2 9 7 49.97

2 5 <2 42.39

ME·XRF06 AI203

% 0.01

14.44

5.74

1.47

6.57

4.03

ME·XRF06 Fe203

% 0.01

14.13

11.56

11.13

10.64

11.10



ME·XRF06 ME-XRF06 ME-XRF06 ME-XRF06 ME·XRF06 ME-XRF06

CaO MgO Na20 K20 Cr203 Ti02

% % % % % %

0.01 0.01 0.01 0.Q1 0.Q1 0.01

9.79 7.92 1.88 0.11 0.03 1.11

7.95 23.87 0.22 0.03 0.37 0.27

0.92 36.54 0.21 0.02 0.26 0.06

12.46 16.63 1.39 0.10 0.22 0.28

5.10 28.22 0.27 0.02 0.35 0.15



TB05023206

ME-XRF06 ME-XRF06 ME-XRF06

MnO P205 8rO

% % % 0.01 0.01 0.01

0.21 0.09 0.02

0.18 0.D1 <0.01

0.08 <0.01 <0.01

0.19 0.02 <0.01

0.19 0.D1 <0.01

MethOll An_lyte








MC904481 MCC04482 MCC04483 MCC04464 MCC04485




ME-XRF06 ME-XRF06 ME-XRF06 WEI-21

BaO LOI Total RecvdWt.

% % % kg 0,01 0,01 0.01 0.02

3.01 3.09 1.63

<0.01 0.76 100.00 2.90 2.85

2.93 2.83 2.89 1.31 2.71

1.41 1.47 3.03 3.28 2.82

1.23 2.89

<0.01 5.80 100.25 3.08 1.49 2.61

2.87 2.67 2.45

<0.01 13.20 100.05 2.24 0.14

0.50 2.69 2.83 2.69 2.82

0.Q1 1.97 100.45 3.13 2.93

<0.01 7.99 99.83 2.55 2.87 2.90

2.96 2.84 2.82 3.32 1.52

ME-XRF05 Ba

ppm

10

30

10

10

30

<10

ME-XRF05 Sr

ppm 2

116

14

5

26

24



Page: 2· D Total # Pages: 4 (A - D)


TB05023206

Metllod AIIalyt.










ALS Chemex EXCELLENCE IN ANAL YTICAL CHEMISTRY ALS Canada LId.


Au-AA24 Au·GRA22 ME-ICP61 ME-ICP61

Au Au Ag AI

ppb ppm ppm % 5 0.05 0.5 0.01

9 <0.5 4.60 8 <0.5 6.75 6 <0.5 7.96

<5 <0.5 7.55 <5 <0.5 7.24

<5 <0.5 3.17 6 <0.5 6.61

24 <0.5 6.68 2040

<5

6 <0.5 6.42 <5 <0.5 7.11 <5 <0.5 7.57 <5 1.0 7.60 <5 <0.5 7.80

12 0.6 7.24 24 0.7 1.12 5 <0.5 0.90 <5 <0.5 1.34 <5 <0.5 7.83

<5 <0.5 7.25 <5 <0.5 7.78 <5 <0.5 7.82 <5 <0.5 8.34 <5 <0.5 7.33

<5 <0.5 7.83 <5 <0.5 7.63 <5 <0.5 7.51 <5 <0.5 7.92 <5 <0.5 7.90

<5 <0.5 7.35 <5 <0.5 8.40 <5 <0.5 7.87

757 <5

<5 <0.5 8.36 31 <D.5 7.14 8 <0.5 8.20 <5 <0.5 8.15 <5 <0.5 7.67

ME·ICP61

As

ppm

5

5 6 <5 <5 <5

8 <5 <5

<5 <5 <5 <5 <5

<5 16 <5 <5 <5

<5 <5 <5 <5 <5

<5 <5 <5 <5 <5

<5 10 <5

8 <5 7

<5 6

ME·ICP61

Ba

ppm

10

50 140 90 30 170

<10 80

220

180 180 490 350 210

90 <10 <10 <10 100

550 740 460 440 420

480 770 210 200 220

180 170 200

310 330 220 120 220



ME-ICP61 ME-ICP61 ME-ICP61 ME-ICP61 ME-ICP61 ME·ICP61

Be BI Ca Cd Co Cr


0.5 2 0.01 0.5 1 1

<0.5 <2 7.87 <0.5 83 653 <0.5 <2 8.51 <0.5 46 519 0.5 <2 6.06 <0.5 45 46

<0.5 <2 7.12 <0.5 47 259 0.7 <2 1.85 <0.5 7 43

<0.5 <2 3.23 <0.5 108 1520 <0.5 <2 7.78 <0.5 48 630 <0.5 <2 9.69 <0.5 37 316

<0.5 <2 7.98 <0.5 64 1240 0.5 <2 10.75 <0.5 29 190 0.8 <2 2.48 <0.5 18 87 0.7 <2 0.95 <0.5 8 13 0.8 <2 3.65 <0.5 7 38

<0.5 <2 7.54 <0.5 57 384 <0.5 <2 3.38 <0.5 109 1495 <0.5 <2 0.86 1.1 112 1670 <0.5 <2 6.04 <0.5 66 1145 0.9 <2 1.43 <0.5 7 14

0.9 <2 1.04 <0.5 5 27

0.9 <2 1.36 <0.5 3 15 0.9 <2 0.86 <0.5 4 10 1.0 <2 0.83 <0.5 3 8 1.0 <2 1.08 <0.5 1 8

0.9 <2 1.00 <0.5 2 6 0.8 <2 0.67 <0.5 1 7

0.9 <2 3.84 <0.5 12 30 0.9 <2 3.96 0.9 8 20 1.0 <2 5.03 <0.5 5 10

0.8 <2 3.72 <0.5 3 11

0.9 <2 3.74 <0.5 12 22 0.8 <2 3.65 <0.5 15 27

0.9 <2 3.70 <0.5 21 33 0.9 <2 3.28 <0.5 5 10 1.3 <2 2.61 <0.5 4 8 1.8 <2 3.11 <0.5 3 9 1.2 <2 1.34 <0.5 4 11

Page: 3-A Total # Pages: 4 (A - 0)


T805023206

ME·ICP61 ME-ICP61 ME-ICP61

Cu Fe K

ppm % % 1 0.01 0.01

74 8.07 0.34 53 6.75 1.22

114 9.06 0.38 95 8.01 0.13 18 1.43 0.68

48 8.75 0.02 30 7.17 0.37 79 5.42 1.35

238 9.05 1.01 61 5.21 1.00 42 2.83 2.66 21 2.16 2.90 29 3.11 1.96

106 7.46 0.41 50 6.73 0.01 44 6.68 0.01 1 7.24 0.01 8 3.39 0.42

11 3.11 1.84 12 2.56 2.73 32 1.90 2.44 16 1.67 2.18 1 1.32 2.07

2 1.06 2.28 19 1.84 3.29 37 4.75 1.31 22 3.95 1.32 14 3.47 1.30

11 4.36 1.06 23 4.54 1.80 31 3.97 1.78

38 3.18 1.66 12 2.65 1.84 11 1.88 1.01 10 1.74 0.84 10 1.85 1.02

Method An.lyle










ALS Chemex EXCEl.l.ENCE IN ANAl. YTICAl. CHEMISTRY ALS Canada Ltd.


ME·ICP61 ME·ICP61 ME·ICP61 ME·ICP61 Mg Mn Mo Na

% ppm ppm % 0.01 5 1 0.01

11.15 1420 <1 0.19 7.03 1280 <1 0.80 4.63 1390 <1 2.52 6.19 1180 <1 1.74 1.48 201 1 4.10

16.65 1265 1 0.06 5.67 1410 <1 1.59 2.91 1710 <1 1.22

4.14 1645 <1 1.06 1.95 1815 <1 1.70 1.13 625 1 2.07 0.75 225 2 2.14 1.31 749 1 2.31

5.65 1995 <1 1.63 18.90 928 <1 0.02 18.75 641 <1 0.01 16.65 1085 <1 0.02 3.10 637 <1 4.31

2.19 640 <1 3.13 1.32 653 1 2.75 0.79 505 1 3.74 0.75 457 1 4.14 0.53 465 1 3.77

0.35 352 <1 4.20 0.40 316 1 3.39 0.42 1310 1 2.58 0.33 1550 <1 2.66 0.37 2010 1 2.70

0.40 2190 <1 2.67 0.44 2210 1 2.37 0.45 1865 <1 2.43

0.44 1310 <1 3.03 0.45 879 <1 2.86 0.48 535 <1 4.18 0.52 467 1 4.13 0.47 455 1 5.13

ME-ICP61 Ni

ppm

1

563 156 61 99 24

1075 186 127

258 82 37 19 19

203 1945 1935 1370

18

18 8 4 6 5

4 6 20 14 9

8 21 27

36 8 7 8 8

ME-ICP61 P

ppm

10

140 150 490 230 290

130 240 270

200 240 290 190 310

210 50 40 50

360

570 360 350 310 310

320 290 280 300 300

260 340 370

420 320 310 310 330


Project: ON635_050327 _07


ME-ICP61 ME·ICP61 ME·ICP61 ME-ICP61 ME-ICP61 ME·ICP61 Pb S Sb Sr Ti V

ppm % ppm ppm % ppm

2: 0.01 5 1 0.01 1

<2 0.15 <5 45 0.25 178 <2 0.06 <5 111 0.29 223 <2 0.07 <5 269 0.52 303 <2 0.02 <5 249 0.39 270 <2 <0.01 <5 116 0.12 46

<2 0.03 <5 15 0.18 133 2 0.01 <5 138 0.33 224 2 0.45 <5 96 0.28 164

13 2.18 <5 150 0.30 207 <2 0.23 <5 167 0.27 162 6 0.58 <5 160 0.21 79 16 1.14 <5 119 0.13 38 14 0.27 <5 148 0.17 53

<2 0.10 <5 142 0.35 252 21 0.16 <5 20 0.09 58

104 0.14 <5 9 0.08 52 <2 0.02 <5 190 0.11 70 6 <0.01 <5 331 0.15 41

4 0.01 <5 481 0.16 44 5 0.02 <5 440 0.15 36 19 0.05 <5 417 0.15 37 29 0.05 <5 421 0.13 30 5 <0.01 <5 371 0.13 28

6 <0.01 <5 343 0.13 30 5 0.03 <5 215 0.13 29 5 0.93 <5 348 0.16 48

56 0.29 <5 419 0.16 42 10 0.11 <5 490 0.14 34

3 0.03 <5 325 0.13 29 11 0.09 <5 264 0.23 74 9 0.16 <5 306 0.27 94

28 0.16 <5 509 0.35 136 40 0.06 <5 572 0.17 40 10 0.04 <5 295 0.15 31 7 <0.01 <5 186 0.15 24 8 0.01 <5 218 0.16 29

Page: 3 - B Total '1# Pages: 4 (A - D)


TB05023206

ME·ICP61 ME·ICP61 ME-XRF05 W Zn Nb

ppm ppm ppm

10 2 2

<10 75 10 46

<10 76 <10 49 <10 6

<10 56 <10 68 <10 47

<10 82 <10 66 <10 55 <10 27 <10 40

<10 99 <10 112 <10 360 <2 <10 30 <10 14

<10 24 <10 37 <10 62 <10 46 <10 14

<10 19 <10 23 <10 71 <10 163 <10 45

<10 36 <10 61 <10 62

<10 109 <10 68 <10 42 <10 36 <10 44

Metltod ""al,ta










ALS Chemex EXCELLENCE IN ANALYTICAL CHEMISTRY AL8 Canada Ltd.

212 Brooksbank Avenue North Vancouver BC V7 J 2C1 Phone: 6049840221 Fax: 6049840218

ME·XRFOS ME·XRF05 ME·XRF05 ME·XRF06 Rb Y Zr 8102

ppm ppm ppm % 2 2 2 0,01

2 5 3 35.11

ME·XRF06 AI203

%

0.01

1.73

ME·XRF06 Fe203

% 0,01

12,12


Project: ON635_050327 _07


ME·XRF06 ME·XRF06 ME·XRF06 ME·XRF06 ME·XRF06 ME·XRF06 CaO MgO Na20 K20 Cr203 TI02

% % % % % %

0.Q1 0.01 0.01 0,01 0,01 0.01

1,34 35.28 0,20 0,04 0,41 0.15

Page: 3· C Total # Pages: 4 (A. D)


TB05023206

ME·XRF06 ME·XRF06 ME·XRF06 MnO P205 8rO

% % % 0,01 0.01 0.01

0.14 0.02 <0.01

Method An.lyle










ALS Chemex EXCEZJ.ENCE IN ANA/, YrICAl. CHEMISTRY ALS Canada Ltd.


ME·XRF06 ME·XRF06 ME·XRF06 WEI·21

BaO LOI Total ReevdWI.

% % % kg

0.01 0.01 0.01 0.02

1,41 2.98 2.94 2.94 1.29

2.83 2.93 2.82 0.15 0.54

1.44 2.19 2.74 0.92 1.75

2.67 2.61

<0.01 13,35 99,90 2.52 2.86 2,61

2,50 2.49 2,64 2,65 2.51

2,11 2.87 2,06 2,75 2.91

2,52 2.71 2,91 0.14 0.54

2.83 2.80 2.63 2.71 2,48

ME·XRF05

Ba

ppm

10

10

ME·XRF05

Sr

ppm

2

7




Page: 3· D Total # Pages: 4 (A· D)


T805023206

.... thad Analyle





MCC04697 MCC04698

ALS Chemex EXCELLENCE IN ANALYTICAL CHEMISTRY ALS Canada LId.


Au·AA24 Au·GRA22 ME·ICP6l ME·ICP6l

Au Au Ag AI

ppb ppm ppm %

5 0.05 0.5 0.01

41 <0.5 8.43 36 <0.5 7.52 7 <0.5 8.24

<5 <0.5 8.02 6 <0.5 7.29

<5 <0.5 7.09 <5 <0.5 7.48 11 <0.5 8.04 <5 <0.5 6.66 <5 <0,5 7.44

<5 <0.5 7.15 <5 <0.5 7.11 <5 <0.5 7.77 <5 <0.5 1.95 18 <0.5 7.34

137 <0.5 7.34 <5 <0.5 7.56

ME-fCP6l

As

ppm

5

<5 <5 5

<5 <5

<5 <5 <5 <5 <5

<5 <5 <5 <5 <5

<5 <5

ME·ICP6l

Ba

ppm

10

470 350 290 510 650

590 260 150 290 200

160 210 660 <10 250

390 220




ME·fCP61 ME-ICP6l ME-ICP6l ME·fCP61 ME-fCP61 ME·fCP61

Be Bi Ca Cd Co Cr


0.5 2 0.01 0.5 1 1

1.1 <2 2.87 <0.5 6 7 0.9 <2 1.84 <0.5 6 8 0.9 <2 1.04 <0.5 4 7 1.0 <2 1.61 <0.5 8 72 0.9 <2 1.86 <0.5 9 75

0.9 <2 2.41 <0.5 4 9 0.9 <2 0.81 <0.5 5 20 0.8 <2 0.78 <0.5 3 7 0.7 <2 0.93 <0.5 3 13 0,8 <2 0.74 <0.5 4 10

0.8 <2 0.57 <0.5 5 18 0.8 <2 0.60 <0.5 4 7 1,0 <2 0,59 <0.5 7 44

<0.5 <2 5.54 <0.5 93 1170 0.5 <2 4,16 <0.5 46 <1

0,8 <2 3.20 <0.5 21 248 0.9 <2 1.56 <0.5 4 13



TB05023206


Cu Fe K

ppm % %

1 0.01 0.01

15 2.37 1.40 13 1.94 1.34 15 1.90 1.17 64 2.29 1.30 22 2.18 1.65

8 1.61 1.28 34 1.62 0.90 28 1.00 0.58 12 1.00 1,02 43 1.10 0.63

30 1.02 0.58 13 0.82 0.55 17 1.11 1,74

150 7.40 0.02 374 11.15 0,63

289 3.75 1.32 10 1.32 0.96

Method An.lyle





MCC04697 MCC04698



ME·ICP61 ME·ICP61 ME·ICP61 ME·ICP61

Mg Mn Mo Ha

% ppm ppm % 0.01 5 1 0.01

0.53 879 <1 4.23 0.44 538 <1 4.05 0.54 422 1 4.99 1.03 459 1 4.53 1.05 501 1 3.85

0.47 569 <1 3.93 0.72 330 1 5.2 0.39 201 1 5.93 0.40 249 <1 4.33 0.66 189 <1 5.3

0.56 182 1 5.6 0.39 127 3 5.2 1.06 183 1 4.5

15.35 1255 <1 0.05 2.46 1675 <1 3.52

2.90 816 <1 2.72 0.50 228 <1 4.06

ME·ICP61

Hi

ppm

1

10 8 7 25 26

5 14 5 8 12

18 7

34 1305 30

114 7

ME·ICP61

P

ppm

10

360 330 340 310 350

290 280 260 210 280

280 280 300 120 500

270 310

To: RUBICON MINERALS CORPORATION 1540-800 W PENDER ST VANCOUVER BC VGC 2V6

Project: ON635_050327 _07



Pb S Sb Sr Ti V

ppm % ppm ppm % ppm

2 0.01 5 1 0.01 1

13 0.17 <5 437 0.15 34 21 0.21 <5 314 0.14 46

22 0.06 <5 335 0.16 33

53 0.25 <5 351 0.18 50

42 0.13 <5 418 0.16 47

9 0.05 <5 386 0.13 37

26 0.15 <5 206 0.13 36 7 0.07 <5 180 0.11 24

9 0.14 <5 217 0.10 31

3 0.01 <5 166 0.14 30

<2 0.01 <5 132 0.14 31

3 0.01 <5 198 0.10 25

5 <0.01 <5 298 0.12 34 <2 0.07 <5 23 0.17 97

2 0.24 <5 403 0.69 285

5 0.08 <5 439 0.22 79 5 0.02 <5 308 0.15 28

Page: 4- B Total # Pages: 4 (A - D)


TB05023206

ME·ICP61 ME·ICP61 ME·XRF05

W Zn Hb

ppm ppm ppm

10 2 2

<10 60 <10 70 <10 57 <10 78 <10 160

<10 44 <10 58 <10 32 <10 24 <10 20

<10 25 <10 21 <10 28 <10 62 <10 113

<10 52 <10 18

Method Analyto

Uftits Sample Description LOR




MCC04697 MCC04698

ALS Chemex EXCELLENCE IN ANAL YTlCAL CHEMISTRY ALS Canada Ltd,

212 Brooksbank Avenue North Vancouver BC V7 J 2C1 Phone: 604 984 0221 Fax: 604 9840218


Rb Y Zr SI02

ppm ppm ppm % 2 2 2 0.01

ME·XRF06

Al203

% 0,01

ME·XRF06

Fe203

% 0,01


Project: ON635_050327 _07


ME·XRF06 ME·XRF06 ME·XRF06 ME·XRF06 ME·XRF06 ME·XRF06

CaO MgO Na20 K20 Cr203 Ti02

% % % % % % 0.Q1 0,01 0,01 0.01 0,01 0,01



TB05023206

ME·XRF06 ME·XRF06 ME·XRF06

MnO P205 S,O

% % % 0.Q1 0.01 0.01

Metllod Analyle





MCC04697 MCC04698

ALS Chemex EXCELLENCE IN ANAL YTlCAL CHEMISTRY ALB Canada Ltd.


ME-XRF06 ME-XRF06 ME-XRF06 WEI-21

BaO LOI Total RecvdWl.

% % % kg

0.01 0.01 0.01 0.02

2.35 2.35 2.29 2.43 2.44

2.65 2.53 2.44 2.95 2.35

2.52 2.47 2.77 2.70 2.75

2.49 2.03

ME·XRF05

Sa

ppm

10

ME-XRF05

B,

ppm 2



Page: 4· D Total # Pages: 4 (A· D)


TB05023206

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DIAMOND DRILLING RPT BALMER BATEMAN TWPS