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42D09NE8M4 63.4721 PIC010
REPORT ON THE
VLF EM SURVEY
AND ROCK SAMPLIN3
PROGRAM
FOR
TRl-STAR RESOURCES LIMITED
Pic and Lecours Townships, Ontario
by
lan Coster, B.Se.
Robert S. Middleton Exploration Services Inc.P.O. Box 1637
TIMMINS, Ontario P4N 7W8
September, 1985
42D09NEeH4 63.4721 PIC
TAELE OF
Page
INTIRQDIJCTICN . . . . . . . . . . . . . . . . . . . . . . . . l
LOCATION AND ACCESS . . . . . . . . . . . . . . . . . . . . . l
PROPERTY . . . . . . . . . . . . . . . . . . . . . . . . . . . l
TOPOGRAPHY AND VEGETATION . . . . . . . . . . . . . . . . . . 2
PREVIOUS WORK . . . . . . . . . . . . . . . . . . . . . . . . 3
REGIONAL GEOLOGY . . . . . . . . . . . . . . . . . . . . . . . 3
PROPERTY GEOLOGY . . . . . . . . . . . . . . . . . . . . . . . 5
VLF EM SURVEYProcedure and Instrumentation . . . . . . . . . . . . . 6Statistics . . . . . . . . . . . . . . . . . . . . . . . 6Intrerpretation . . . . . . . . . . . . . . . . . . . . 6
ROCK SAMPLING PROGRAMProcedure and Statistics . . . . . . . . . . . . . . . . . 10Results . . . . . . . . . . . . . . . . . . . . . , . . 17
CONCLUSIONS AND REXXM1ENDATIONS . . . . . . . . . . . . . . . 20
REFERENCES . . . . . . . . . . . . . . . . . . . . . . . . , . 21
CERTIFICATION
APPENDIX
SPECIFICATIONS FOR GEONICS EM - 16
ROCK GKXHBWCAL RESULTS (BARRINGER MAGENTA)
LIST OF FIGURES
FIGURE l Index Map l" = 25 mi.
FIGURE 2 Claim Location Map l" = 50,000
FIGURE 3 Regional Geology: Heron Bay Sheet (2439) l" = 1 /2 mi,
FIGURE 4 Sample Locations Sheet l 1:2500 (in pocket)
FIGURE 5 Sample Locations Sheet 2 1:2500 (in pocket)
FIGURE 6 Profiled VLF EM Sheet l 1:2500 (in pocket)
FIGURE 7 Profiled VLF EM Sheet 2 1:2500 (in pocket)
TABLES
TAELE l Sample Numbers, Locations and Descriptions
TABLE 2 Sample Results
INTRODUCTION
VLF EM surveying and rock sampling were conducted on the 33
claim TRI-STAR RESOURCES LIMITED, Hemlo gold area property
between August 23-29, 1985. The VLF EM survey was done using a
Geonics EM-16 unit. A total of 102 rock samples were collected
and analysed for gold.
It is the purpose of this report to discuss the findings of
the VLF EM and rock sampling surveys, and correlate this with
previous (magnetometer, IP, and geological) surveys conducted on
the property.
LOCATION AND ACCESS
The Tri-Star claim group is located in the north central
portion of N.T.S. map 42 D/9, straddling the boundary between Pic
and Lecours Townships. The southwestern boundary of the claim
group is located on the north shore of the Black River,
approximately 6.5 km up river from where Highway 17 crosses over
the Black River, or approximately 2.75 km due north of Highway
17.
Access to the property is by boat, 6.5 km up the Black River
approximately 14 km east of the town of Marathon, Ontario.
PROPERTY
The 33 contiguous mining claims included in the Tri-Star
claim group, encompass approximately 1320 acres of mining land.
The claims are registered with the Ministry of Natural Resources,
MARATHONTR.I-STAR R E SOU,
PROPER!
- 2 -
Recording Office, Thunder Bay, Ontario, and are listed below.
CLAIM NUMBER TOTAL
TB 654 092 lTB 654 093 lTB 654 097 lTB 654 098 lTB660036-TB660040 5TB654071-TB654091 21TB654094-TB654096 3
TOPQOUPHY AND VEGETATION
Terrain in the vicinity of the Tri-Star claim group on the
Black River, varies from flat swamp to rocky bluff, with a
vertical relief of approximately 130 metres. Major hills
including those in the northern and southeastern parts of the
property are underlain by massive plutons. Smaller east-west
trending ridges and swamps are underlain by the metavolcanics and
metasediments. Scattered outcrop comprises approximately J.5% of
the property. Although the overburden cover in the central part
of the property is extensive, it appears to be quite shallow,
except in the immediate proximity of the major creeks.
A thick forest of spruce, birch and poplar covers the
property. Low areas, swamps and creek valleys are thick with
alders.
PREVIOUS W3RK
Very little work has been recorded prior to the Hemlo
staking rush, within 8 km of the Tri-Star property, and no work
has been recorded on the ground itself. After Tri-Star aquired
fc1
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R l VI S IONS ROBERT S. MIDDLETON EXPLORATION SERVICES INC.
TR1-STAR RESOURCES
Tnlr
CLAIM INDEX MAP
FIGURE 2
- 3 -
the property, magnetometer, IP and geological surveys were
conducted (late 1983). It was concluded from these surveys that
the property is underlain by an east-west trending belt of
intermediate to mafic metavolcanic pyroclastics overlain by
metasediments, and that this belt is intruded by two massive
plutons, one to the north and another to the south. Magnetic
data reflected diabase dikes as linear highs, and within the
volcanic members, isolated magnetic highs occur within certain
traceable mafic horizons. Both plutons are readily discernable
from the magnetic data. IP was done on every second line and
several weak, broad east--west trending anomalies were outlined,
although they are believed to be reflected by topography.
REGIONAL GEOLOGY
The Tri-Star property is located within the
Sch re i be r-Marathon greenstone belt in the Superior Province of
the Canadian Shield. More specifically, the property lies within
an Archean me tasedimentary-metavolcanic belt trending easterly
from the Heron Bay area on Lake Superior. The Hemlo gold camp is
also located within a portion of the Schreiber-Marathon
greenstone belt, and lies approximately 20 km to the east.
The Tri-Star property is situated within the Heron Bay
Sheet, Map 2439 (see enclosed portion, Fig. 3), which was mapped
by T.L. Muir, and associates for the Ontario Department of Mines
in 1981.
The oldest rocks in the area are the acid and mafic
- 4 -
metavolcanic sequences with their associated interflow
metasediments. In the vicinity of the Tri-Star property, the
belt consists of intermediate to mafic metavolcanic flows and
pyroclastics with monor intercalated tuffaceous-sedimentary
rocks. According to T.L. Muir, (1982, O.G.S. Report 218), the
fragment size in the pyroclastic rocks decreases away from the
vicinity of Heron Bay suggesting that a volcanic center lay
within or near Heron Bay. This portion of the Metavolcanic belt
is sandwiched between two massive plutons, one to the north, the
Gowan Lake Pluton, and the smaller Heron Bay Pluton to the south.
The Gowan Lake Pluton consists of an equigranular to porphyritic
(microcline) biotite-hornblende quartz monzonite. The Heron Bay
Pluton consists of a porphyritic (plagioclase) biotite-hornblende
granodiorite.
All of the above mentioned rock suites are intruded by Late
Precambrian felsic dykes and sills, and diabase dikes. A cannon
orientation of the diabase dikes is nor them ly.
Major lineaments in the region trend north-northwesterly and
northwesterly and can be easily recognized on air photographs.
PROPERTY GEOLOGY
The Tri-Star property is underlain mainly by Archean
intermediate to mafic pyroclastic metavolcanics with minor
associated tuffaceous metasedimentary rocks. These trend
easterly and, according to T.L. Muir, (1982), young to the north.
This belt of rocks is intruded in the southeast portion of the
METAVOLCANICSINTERMEDIATE TO FELSIC
METAVOLCANICSS Um. divided.
Uph: e'er or green le *hite /tows.Ugh! green pillowed fhwf.SptifjlitiC /lows,
fd Oufl2-leldspa! porphyry (rhyolite), fe PyrK.istic breccia, tuff-breccia. ff lap,: -tuft, tuff. 2p Ctysel tuff, in Rhy;.':ie pyroclastic biKCia.
MAFIC W-TAViDLCANICS
9e
S!
Unsubdivided.Porphyritic (microcline) biotite-hornblende granodiorite.Hornblende-biolite granodiorite.Biotite granodiorite.Porphyritic (hornblende) biotite-hornblende granodiorite.Porphyritic (ptagioclese) biolite-hornblende granodiorite.Hybrid rock.
11 Unsubdifided. 7 J* Olivine-bfering diabase. 11b Quarti-beaiins diabase. Ile Porphyritic diabase. lid equigranular diabase.
GOWAN LAKE PLUTONB Unsubdirided.Sa Porphyritic (microcline) biolite
hornblende Quart] momonite. Sb Biotite-hornb/ende guarti mon
zonite. Se Hybrid._________________
la Dirk creen flows.1b Met'.-m preen flows.le Pill:-ed flows.1d Variz'.'lic flows.1e Amr;daloitial flows.lg Porphyritic (plagioclase) flows.1h Porphyritic (hornblende) lapilli-lull.1j Pill:" breccia.Ik PyrK*'eslic breccia, tuff-breccia.1m Lap' -tuff. tuff.In Larr,-tied (epidote lijtrs).Ip Meof .'71 to coarse grained.
REVISIONS ROBERT S. MIDDLETON EXPLORATION SERVICES INC.
TR1-STAR RESOURCES
Title
REGIONAL GEOLOGYFIGURES
Dale:NOV. 63A. W
N.T.S.: ^2 D/B: u-zt
- 5 -
property by the Heron Bay Pluton, a massive porphyritic
(plagioclase) biotite-hornblende granodiorite. The northern
portion of the Tri-Star property is intruded by the Gowan Lake
Pluton, a massive porphyritic (microcline) biotite-hornblende
quartz monzonite.
The metavolcanic and metasedimentary rock units are
generally well foliated in texture, with lapilli within the
pyroclastic units stretched and flattened parallel to foliation
at about 6:1 (long axis: width). Narrow felsic layers within
intermediate and mafic units are often boudinaged parallel to
foliation.
Minor carbonate alteration occurs in fractures as calcite,
together with minor manganese and hematite stains.
VLF BM
Procedure and Instrumentation
The VLF EM survey was carried out using two EM-16 units
manufactured by Geonics Ltd. (Specifications are included in the
appendix). In phase and quadrature readings were measured using
Cutler, Maine (NAA) as a transmitter. Transmissions were at a
frequency of 24.0 khz. Readings were taken at 20 m intervals
along lines spaced 120 metres apart. All readings were taken
facing north.
Statistics
The VLF EM survey was conducted between August 23-29, 1985,
in the field by two operators from Rayan Exploration Ltd. (Ray
- 6 -
Meikle, Bryan Belanger). A total 42.42 Ion of line were surveyed
resulting in 2121 readings.
Interpretation
Anomalies obtained with the EM-16 equipment can be divided
into two categories:
Type "A" - those in which the quadrature is opposite in sign to the in-phase (negative quadrature) and indicates a strong phase shift due to the overlying conductive overburden. Type "A" conductors are typically due to sulphides, graphite or very strong shears.
Type "B" - those in which the quadrature follows the in-phase (positive quadrature) and indicates a poorly con ductive source such as overburden, faults or shears.
The above separation depends on the conductivity-thickness
of overburden. Consequently, in the absence of overburden, Type
"B" anomalies could represent strong VLF conductors. Therefore
the Type "B" anomalies should be examined in the absence of
overburden.
It should also be noted that weakly pyritized shears and
formations, often of value in gold exploration, usually give rise
to the Type "B" response.
A total of 20 conductors (lettered A to T inclusive, see
Fig. 6 fc 7) have been interpreted from the data. The axes of the
conductors generally strike ENE, E-W or ESE and these directions
are conformable to the geologic trend.
Conductor A is 1440 m long, trending ENE between L 840E and
E-W between L 1560 and L 2280E. This conductor displays a
moderate in-phase response with a corresponding moderate negative
quadrature (type "A" anomaly). The conductor correlates with the
- 7 -
contact between unit Ir and 1m in its ENE trend, and with a long
linear swamp in its E-W trend.
Conductor B is 240 m long, trending ENE between L 1560E and
L 1800E. This conductor displays a moderate in-phase response
with little attendant quadrature response (type "B" anomaly) and
is probably due to overburden/swamp effects.
Conductor C is 600 m long, trending E-W between L 1080E and
L 1680E. This conductor is a weak and discontinuous type "B"
anomaly and may be due to a slightly elevated background content
of disseminated pyrite.
Conductor D is 480 m long, trending ENE between L 1680E and
L 2160E. This conductor displays a moderate to strong in-phase
response with weak positive quadrature (type "B" anomaly). The
western half of this conductor axis is weaker and is probably
caused by a swampy beaverpond and creek, while the eastern half
of the conductor axis may be due to a slightly elevated
background content of disseminated pyrite.
Conductor E is 720 m long, trending E-W between L 2160 and L
2880E. This conductor displays a moderate in-phase response with
a moderate positive quadrature response (type "B" anomaly). The
axis roughly parallels, and is probably due to the contact
between units 1m and 3d.
Conductor F is 340 m long, trending E-W between L 2780E and
L 3120E. This is a weak type "B" conductor that corresponds to
the contact between units 1m and Ir.
Conductor G is 340 m long, 100 m south of conductor F, and
8
trends E-W. This is a weak type "B" conductor that may be due to
a slightly higher diseminated pyrite content.
Conductor H is 600 m long, trending ESE between L 2520E.
This conductor displays a weak in-phase response near L 2520E and
a strong in-phase response near L 2880E, with corresponding
moderate negative quadratures (type "A" anomaly). The conductor
correlates with a long linear swamp, and may be the eastern
extension of conductor A.
Conductor I is 340 m long, trending NE between L2780 and L
3120E. This conductor is a weak type "A" anomaly that may be
caused by a weak struture (fault or shear) in the granodiorite.
Conductor J is 240 m long, trending ENE and ESE between L OE
and L 240E. This conductor displays a moderate in-phase response
with li tt lw attendent quadrature response (type "B" anomaly).
The conductor parallels, and is probably due to the contact
between units 1m and Ik.
Conductor K is 120 m long and is probably two weak, single
point anomalies (type "B"), caused by a linear swamp and creek.
Conductor L is 240 m long and is a weak type "B" conductor,
that is probably caused by a creek.
Conductor M is 120 m long and is a weak type "B", caused by
the same creek as conductor L.
Conductor N is 120 m long, trending ESE between L 480E and L
600E. This conductor portrays a weak to moderate in-phase
response with little corresponding quadrature (type "B" anomaly).
This conductor parallels conductors L and M, and may reflect a
- 9 -
weak structure (fault or shear).
Conductor O is 240 m long, trending ESE between L 480E and L
720 E. This is a weak type "B" conductor that parallels
conductors L, M and N, and may reflect a weak structure (fault or
shear).
Conductor P is a weak type "B" anomaly across two lines, and
it is probably due to conductive overburden.
Conductors Q, R, S and T are weak, type "B", single point
anomalies that are probably caused by overburden affects.
Rock Sampling Program
Procedure and Statistics
"Die Rock Sanpling program was carried out by the author. A
total of 102 samples (numbered TS-01 to TS-103, omitting TS-61)
were collected from outcrops exposing both mineralized, or
altered material, as well as fresh bedrock. The samples were
analyzed for Au, Ag, Mo, Sb, As, Cu, Zn, and Ba at Barringer
Research Ltd. of Rexdale, Ontario. The following table describes
and gives the locations of the samples.
- 10 -
TABLE l
Sample No.
TS - 01
TS - 02
TS - 03
TS - 04
TS - 05
TS - 06
TS - 07
TS - 08
TS - 09
TS - 10
TS - 11
TS - 12
TS - 13
TS - 14
TS - 15
TS - 16
Location
L1200E/720N
L1200E/730N
L1200E/772N
1185E/860N
1180E/965N
L1195E/1050N
L1320E/1020N
L1320E/928N
1315E/700N
1290E/280N
1580E/710N
1560E/745N
5m W of TS-12
1552E/790N
1560E/830N
L11560E/855N
Description
Quartz vein; clear-glassy; rusty fractured; trace pyrite; not in place
Rusty weathering metasediment
2 inch wide felsic interbed in metasediment; weakly sericitic; trace pyrite
Rusty weathering volcanoclastic
Grey-brown coarse grained aplite dikelet
Coarse aplite with 31 coarse biotite and trace specks pyrite
"baked" agmatized metasediment
Grey-brown fine grained biotitic meta sediment
Intermediate tuff with siliceous bands
Mafic tuff breccia with hematized and epidotized lapilli
Quartz sweat in (1m); fine grained granular white
Rusty intermediate tuff; rusty parallel to foliation; trace pyrite
as above
Felsic interlayer in intermediate tuff
Rusty and Mn-stained intermediate crystal tuff
3 inch wide interlayer of grey felsic material in intermediate tuff
- 11 -
Sanple No.
TS - 17 TS - 18
TS - 19
TS - 20
Location
5m S of BL/2060E
BL/2060E
BL/2105E
TS
TS
TS
TS
TS
TS
TS
TS
TS
TS
TS
- 21
- 22
- 23
- 24
- 25
- 26
- 27
- 28
- 29
- 30
- 31
BL/2115E
5m N of BL/2155E
5m E of L2280/110N
L2280E/270N
L2280E/828N
L2280E/825N
TL12N/2300E
TL12N/2300E
L2400E/1196N
TL12N/2420E
TL12N/2445E
Description
Pervasively silicified (1m), rusty weathered trace pyrite; TS18 more prevasively hematized
As above, only weakly silicified, no hematization, trace pyrite.
Coarse grained (1m), moderately hematized; weakly epidotized prevasively
As above, only stronger hematization
Coarse grained (1m) with silica-epidote- hematite stringers along foliation
Fresh intermediate volcanic with weak sericite along foliation
Quartz-epidote stringers in (1m) trace limonite
Rusty phlogopitic (1m) with rare rusty quartz stringers
3 inch wide coarse grained, glassy, white quartz sweat; minor limonite
Biotitic (1m)
Banded, well laminated metasediment with epidotic bands
Well laminated metasediment with a one inch vuggy, rusty quartz veinlet parallel to foliation
Laminated metasediment
Laminated metasediment, more siliceous and rusty weathered
TS - 32 TL12N/2190E as above
Sample No.
TS - 33
TS - 34
TS - 35
TS - 36
TS - 37
TS-38
TS - 39
A TS - 40
TS - 41
TS - 42
TS - 43
TS - 44
TS - 45
TS - 46
TS - 47
TS - 48
Location
TL12N/2065E
TL12N/2065E
L1920E/1200N
L1680/852N
L1680E/768N
L1680/745N
5m E of TS-38
16m W of TS-38
L720/630N
5m E of L720/638N
5m W of L720/639N
L720/696N
L720/810N (3mE)
L720/810N (3mW)
L720/905N
L720/918N
- 12 -
Description
Felsic tuff with quartz eyes; moderatelysericitic with trace specks pyrite(subcrop)
as above, only no pyrite or quartz eyes
Red, pervasively hematized metawacke
Well foliated, friable (1m) with traceto l/2% specks pyrite alongfoliation
Rusty weathering (1m)
Resample of CM22-1; foliated (sheared?)1m, very friable; trace pyrite, muchlimonite; rusty quartz stringersthroughout
Resample of CM22-2; not foliated; tracequartz eyes, trace pyrite
As above
Well foliated biotitic (1m)
Grey intermediate-felsic sediment? wellbedded; minor sericite parallel tofoliation
Strongly biotitic metasediment
Contorted and folded metasediments; muchchlorite; minor remobilized quartz; tracepyrite
well foliated metasediment
non-foliated felsic tuff? metasediment?
felsic and/or silicified metasediment
variolitic flow with hematitic foliationplanes
- 13 -
Sample No.
TS - 49
TS - 50
TS - 51
TS - 52
TS - 53
TS - 54
TS - 55
TS - 56
TS - 57
TS - 58
TS - 59
TS - 60
TS - 62
TS - 63
Location
L720/945N
L720/945N
4m W of L360/878N
15m W of L360/870N
L360/728N
L360/706N
L360/642N
L360/642N
L240/370N
L240/370N
L3120E/85N
L3120E/560N
10m W OF L3120E/650N
10m W OF L3120E/790N
Description
Biotitic foliated wacke
Siliceous interbed now weakly sericitic
Felsic interlayer within metasediments in agmatitic contact zone (weakly sericitic)
Mixed felsic interlayer, metasediment and injected (agmatitic) material
Well foliated and bedded fine grey meta sediment
Well foliated metasediment? tuff? with orange quartz veinlets parallel to foliation
(Subcrop?) of highly pervasively carbon- atized grey tuff; trace pyrite
Weakly carbonatized intermediate tuff; trace pyrite.
Quartz-feldspar porphyry; 1/2 % cubic pyrite.
as above
Biotitic (1m) with trace pyrite and trace orange quartz stringers
Hematized crystal bearing (1m)
Silicified fracture with quartz-epidote- hematite and trace cubic pyrite
Siliceous coarse grained metasediment? with trace sericite
- 14 -
Sanple No. Location
TS - 64 10m W OF L3120E/810N
TS - 65 10m W OF L3120E/825N
TS - 66 10m W OF L3120E/840N
TS - 67 10m W OF L3120E/854N
TS -68 10m W OF L3120E/858N
TS - 69 10m W OF L3120E/890N
TS - 70 10m W of L3120E/910N
TS - 71 10m W of L3120E/926N
TS - 72 L3000/1012N
TS - 73 L3000/916N
TS - 74 L3000/910N
TS - 75 5m W of L3000/791
TS - 76 L3000E/396N
TS - 77 L3000E/100N
TS - 78 L3000E/25N
TS - 79 L2780E/40N
TS - 80 10m W of L2780E/85N
TS - 81 5m W of L2780E/95N
TS - 82 L2780E/168N
Description
Siliceous metasediment? with white recrystali zed quartz wisps containing trace pyrite
as above
Typical dirty, brown metasediment (1m?)
Andalusite (?) bearing metasediment
Sample contains 40% remobilized orange quartz
Silicified (1m?) with trace streaks pyrite and traces hematite and sericite
Siliceous interbed with trace pyrite and sericite
Quartz-feldspar porphyry with X/2% pyrite
Silicified (1m) with vuggy rusty quartz stringer; trace pyrite
Rusty weathered metasediment? (1m)
Highly contorted sediments (?) with coarse biotite and orange quartz knots
Rusty orange quartz sweat
Lapilli tuff with quartz-carbonate- hematite veinlets
Silicified and hematized (1m)
Hematitic (1m) with 1/21 cubic pyrite
Fresh looking (1m)
as above
as above and weakly silicified
Fresh (1m)
- 15 -
Sample No. Location
TS - 83 L2780E/182N
TS - 84 15m E of L2780/782N
TS - 85 L2780E/790N
TS - 86 30m W of 2780E/820N
TS - 87 L2780E/890N
TS - 88 L2780E/1020N
TS - 89 25m W of L2780/1045N
TS - 90 45m W of L2780/1045N
TS - 91 L2780E/1187N
TS - 92 10m S of TL12/2720E
TS - 93 L2880E/1185N
TS - 94 L2880E/1070N
TS - 95 L2880E/1038N
TS - 96 6m E. of L2880E/915N
TS - 97 L2880E/780N
TS - 98 L2880E/180N
TS - 99 5m E of L2880E/175N
TS -100 5m E OF L2880E/130N
TS -101 5m E OF L2880E/120N
TS -102 BL @ 2874E
TS -103 Sm N. of BL2800E
Description
Fresh (1m)
Weakly silicified (1m)
Weakly siliciifed (1m)
Fresh (1m)
Biotitic, well foliated (1m)
Fresh (1m)
50% white vuggy quartz veinlet
As above, trace pyrite.
Fresh (1m)? metasediment?
Fresh (1m)? metasediment?
Fresh (1m)? metasediment?
Fresh Quartz Monzonite (Boulder?)
Fresh metasediment
Fresh biotitic metasediment
Fresh biotitic (1m)
Weakly silicified (1m)
50% quartz-hematite veinlet
Weakly silicified (1m)
Weakly silicified and hematized (1m)
6 inch wide quartz vein going 248"; trace pyrite
Angular quartz vein float with trace pyri te.
- 16 -
Results
The following results gives the geochemical analytical
results for the 102 rock samples collected in 1985.
Sanple No. Au(ppb) Ag(ppm) Mo(ppm) As(ppm) Sb(ppm) Ba(ppm) Cu(ppm) Zn(ppm)
TS- 01 ^ 02 55 .8 02 48 14 4TS- 02 ^ 02 3 02 O2 435 105 34TS- 03 ^ 02 3 1.3 02 519 19 31TS- 04 ^ 02 2 02 O2 1100 10 86TS- 05TS- 06TS- 07TS- 08TS- 09
152510
5O
0202020202
23645
1.11.81.51.3
.8
0202020202
762266568175715
147
173637
2912466474
TS- 10 ^ 02 2 02 02 640 34 11
TS- 11 ^TS- 12 ^TS- 13 ^TS- 14 5TS- 15 15TS- 16 ^TS- 17 ^TS- 18 ^TS- 19 ^TS- 20 ^
TS- 21 ^TS- 22 ^TS- 23 ^TS- 24 ^TS- 25 ^TS- 26 ^TS- 27 ^TS- 28 ^TS- 29 ^TS- 30 ^
TS- 31 ^TS- 32 ^TS- 33 ^TS- 34 ^TS- 35 ^
02020202020202020202
02020202020202020202
0202020202
2212225553
2352355123
13221
.8
.41.87.2
.81.002020202
020202
.23.71.55.62.4
21.11.8
1.95.61.62.41.9
02020202020202020202
02020202020202020202
0202020202
34166155396334156555
1550234900
94643545
81285
10720279478166
229722285219262
6232145252520211896
41614
5241238424146
7628172713
4281721472241384142
323151
862
568657688
2581486871
- 17 -
211212
2323353314
.61.5.7.5
2.3
02.8.3021.98.1.5
7.04.41.9
0202020202
02020202020202020202
3161380340441703
920780865314617507362435201349
3961475147
60494437334931244547
3624385034
78778449706560696837
Sanple No. Au(ppb) Ag(ppm) Mo(ppm) As(ppm) Sb(ppm) Ba(ppm) Cu(ppm) Zn(ppm)
TS- 36 ^ 02TS- 37 ^ 02TS- 38 ^ O2TS- 39 ^ O2TS- 40 ^ 02
TS- 41 ^ 02TS- 42 ^ 02TS- 43 ^ 02TS- 44 O 02TS- 45 ^ 02TS- 46 ^ 02TS- 47 ^ 02TS- 48 ^ 03TS- 49 ^ 02TS- 50 ^ <.2
TS- 51 ^ <.2 6 10.5 O2 247 60 39TS- 52 ^ 02TS- 53 ^ 02TS- 54 ^ 02TS- 55 ^ 02TS- 56 ^ <.2TS- 57 ^ <.2TC *\Q S t\ f OJ.D oo VD v t ftTS- 59 ^ <.2TS- 60 ^ <.2 4 <.2 02 1060 15 45
TS- 62 ^ 02TS- 63 ^ O2TS- 64 ^ 02TS- 65 ^ <.2TS- 66 ^ <.2TS- 67 ^ <.2TS- 68 ^ <.2TS- 69 <5 02TS- 7tf <5 <.2
TS- 71 ^ <.2TS- 72 ^ <.2TS- 73 ^ <.2TS- 74 <5 02TS- 75 ^ <.2TS- 76 ^ <.2TS- 77 ^ <.2
83432
1354
1.03.8.50202.3020 2
0202O2020202O202
7139239888289110876
546
3711362015582224
3884547075555058
445622354
4433422
.65.9
16.24.4
17.81.13.1.6
3.1
1.41.5.4.3
1.002O2
0202020202020202O2
02020202020202
86523487
1280544874323
8220351
837283432772294
1260670
195044613630253825
46511761403218
488172785896744818
73548366395537
- 18 -
Sanple No. Au(ppb) Ag(ppm) Mo(ppm) As(ppm) SbCppm) Ba(ppm) Cu(ppm) Zn(ppm)
TS- 78TS- 79TS- 80TS- 81TS- 82TS- 83TS- 84TS- 85TS- 86TS- 87TS- 88TS- 89TS- 90
TS- 91TS- 92TS- 93TS- 94TS- 95TS- 96TS- 97TS- 98TS- 99TS- 100
TS- 101TS- 102TS- 103
^^^^^^^^^^^^^
^^^<5^^<5<5<5<5
^<5<5
After
<.2O2<.2<.2<.2<.2O2<.2<.2<.2<.20 202
0202O2O2O2<.2<.2020202
020202
choosing
24423
202243558
4313243353
245
threshold
.402020202.30202022.7.2.5
1.8
.6020202020202020202
02.2.5
values of
02020202020202020202020202
02020202020202020202
020202
30 ppb -4 ppm -
1 O M. L
10245946553536819575264611501230313248445
500596455859393573903386388482
6238
17
Au
li-
8262010283512504910242225
35222515173321211616
151012
53314945513131514484674048
795547
101727056572151
5244
6 ppm - As2 ppm - Sb
1000 ppm - Ba150 ppm - Cu150 ppm - Zn
The following samples are considered anomalous:
55 ppm Mo 1100 ppm Ba
7.2 ppm As1550 ppm Ba21.1 ppm As1380 ppm Ba8.1 ppm As7.0 ppm As10.5 ppm As
TSTS
TSTSTSTSTSTSTS
- 01- 04
- 14- 18- 29- 37- 46- 48- 51
- 19 -
TS - 57 13 pptn MoTS - 60 1060 ppm BaTS - 64 16.2 ppm AsTS - 65 1280 ppm BaTS - 66 17.8 ppm AsTS - 69 8220 ppm BaTS - 76 1260 ppm BaTS - 83 20 ppm MoTS - 86 1150 ppm BaTS - 87 1230 ppm Ba
None of the samples were considered anomalous in Au, Ag, Cu,
Zn, and of the 19 samples (above) considered anomalous in
indicator elements, none are multi-element anomalies (more than
one element anomalous in the same sample). Also, of the above 19
anomalous samples, all are considered only weakly anomalous
except for TS-29 and TS-69.
TS-29 is moderately anomalous in arsenic (21.1 ppm). It
should be noted that greater than 50 ppm As is considered
anomalous at the Hemlo gold deposits.
TS-69 is moderately to strongly anomalous in barium (8220
ppm). However, wihin the "Hemlo camp", it is not unusual to have
highly anomalous barium values scattered within volcanoclastics
and metasediments, with no accompanying mineralization or
alteration. This may be caused by the mechanical weathering of
barium-feldspar, rather than the formation of barite.
OONCUJSIONS AND REOCMVIEEDATIONS
Although 20 VLF-EM conductors of variable strike length and
strength were defined on the property, none of them have been
interpreted to be directly caused by an appreciable sulphide
- 20 -
content within underlying geology. Anomalies outlined by IP
surveying in 1983, are weak and do not correlate with the VLF
conductors outlined in this report.
Of the 102 rock samples collected from outcrops on the
property, none are considered anomalous in gold, but 19 are
considered anomalous in indicator elements.
In light of the fact that none of the VLF-BW conductors
correllate with the existing weak IP anomalies (obtained in
1983), and that none of the rock samples returned anomalous in
gold, no further work is recorrmended at this time.
Respectfully Submitted
lan Coster B.Se.
REFERENCES
- 21 -
Colvine, A.C. editor 1983
Coster, I., N. Caira, 1983
G.S.C. - O.D.M.
Milne, V.G. 1967
Muir, T.L. 1982
Muir, T.L. 1982
Thomson, J.E. 1931
The Geology of Gold in Ontario, Ontario Geological Miscellaneous Survey Paper 110, Ministry of Natural Resources, Ontario.
Geological, Magnetometer and I.P.-Resistivety Survey of the Tri-Star Resources Limited Property.
Aeromagnetic Map, 2156G
Geology of the Cirrus Lake - Bamoos Lake Area, District of Thunder Bay, Ontario Department of Mines, Geological Report 43.
Geology of the Hemlo Area,District of Thunder Bay,Ontario Geological Survey Report 217, 65p.Accompanied by Map 2452, Scale 1:31680.
Geology of the Heron Bay Area,District of Thunder Bay,Ontario Geological Survey Report 218, 89p.Accompanied by Map 2439, scale 1:31680.
Geology of the Heron Bay Area, District of Thunder Bay, Ontario Department of Mines, Ann. Rept., Vol. XL, part II.
CERTIFICATION
l, IAN P.O.A. COSTER, B.Sc., of Tinmins, Ontario, certify
that:
1) I am a graduate of the University of British Columbia, Vancouver, B.C., with a B.Sc. degree in Geology obtained in 1981.
2) I have been practising my profession in Canada since1981.
3) I have no direct or indirect interest in the properties, leases or securities of TRI-STAR RESOURCES LIMITED nor do I expect to receive any.
Dated this September 1985,Tiimrins, Ontario.
IAN P.D.A. COSTER, B.Sc,
lw IZ la
l- IX
EM16 SPECIFICATIONS
MEASURED QUANTITY
SENSITIVITY.
PJESOLUT3ON
OUTPUT
OPERATIJ3G FREQUENCY
OPERATOR CONTROLS
POWER SUPPLY
DIMENSIONS
V7E1GHT
In-phase and goad-phase components of vertical magnetic field as a . percentage of horizontal primary field, (i.e. tangent of the tilt angle and ellipticity)." -
In-phase
Quad-phase 401.
f
Nulling by -audio tone. In-phase indication from jnechanical incline- . TTieter and quad-phase from a graduated dial.
15-25 kHz VLF TJadio Band. Station selection done by means of plug-in units.
On/Off switch, battery test push button, station selector switch, sudio volume control, quadrature d5al, inclinometer.
6 disposable 'AA 1 cells.
42 x 1 4 x Sem
Instrument: 1.-6 ^ Shipping : -4 . 5 3cg
GEONICS LIMITED2 Thorncliffe Park Drive, Toronto 17, Ontario, Canada. Tel.(416) 425-1821, Cables: Ceoni
VLF ELECTROMAGNETIC UNIT
Pioneered exclusively by Geonics Limited the VLF-method of electromagnetic surveying by utilization of the uniform horizontal fields generated by an existing network of reliable, fully operational Very Low Frequency trans mitting stations has proved to be a major advance in geophysical exploration.
Very extensive world-wide experience since the beginning of 1965 by a large and rapidly increasing number of users, including a high proportion of major mining and exploration companies, has provided conclusive evidence of the effective ness of Jthe technique and the EM 16 has gained general acceptance as a basic electromagnetic tool. This evidence has also indicated the response of dissemin ated bodies, to the VLF-method.
The unique self-contained EM 16 offers the unrivalled combination of LIGHT WEIGHT, ONE-MAN OPERATION and DEEP PENETRATION allowing rapid, economical surveys. Assessing the data is simplified due to the use of the uniform horizontal primary field. The patented design feature of the measurement of both the in-phase and out-of-phase (quadrature) component of the vertical field provides the information necessary for comprehensive interpretation of the field results.
SPECIFICATIONS
Source of primary field:
Transmitting nations used:
Cperatin; frequency ranpe:
Parameters measured:
Method cf reading:
VLF transmitting nations.
Any desired nation frequency supplied with the instrument in the form of plug-in tuning units. Two tuning units can be plugged in at one time. A switch selects either nation.
About 15 -25 kHz
(1) The vertical in-phese component (tangent of the till angle of the polarization ellipsoid).(2) The vertical out-of-phase (quadrature) component the short axis of .the polarization ellipsoid compared to the long axis).
In-phase from t mechanical in clinometer; out-of-phase from B calibrated dial. Nulling by audio lone.
Scale range:
Readability:
Reading time:
Operating temperature range:
Power Supply:
Dimensions:
Weight:
Instrument supplied with:
Shipping weight:
In-phase ± 150X; Out-of-phase i 4054.
10 — 40 seconds depending on signal strength.
-40 lo 50CC
6 size AA (penlight) alkaline cells. Life about 200 hours.
16 x 5.5 x 3.5 in (42 x 14 x 9 cm)
2.5 ibs (1.1 kg)
Monotonic speaker, carrying case, manual of operation, 3 station selector plug-in tuning units (additional frequencies are optional), set of -baneties.
10 Ibs (4.5 kg)
Subsidiary of Deerinc Milliken Inc.
^^ 304 CARLINOVIEW DRIVE 3750 - 19TH STREET ^M REXDALE, ONTARIO SUITE 105
^ — ^^F M9W 5G2 CALGARY, ALBERTA
^BARRINGER MAGENTA ^^.^ S™, • C F ILE: T5.0584 A DATE: os/io/ss M MATRIX! Ad REG ^
V -,R, S. MIDDLETON EXPLORATION SERVICES (I. COSTER) PROJ! M-22
SAMPLEID
TS-1TS-2TS-3TS-4TS-5
TS-6TS-7TS-8TS-9TS-10
TS-11TS-12TS-13TS-14TS-15
TS-16TS-17TS-18TS-19TS-20
TS-21TS-22TS-23TS-24TS-25
TS-26TS-27TS-28TS-29TS-30
TS-31TS-32TS-33TS-34TS-35
TS-36TS-37TS-38TS-39TS-40
TS-41TS-42TS-43TS-44TS-45
CUPPM
14105191014
717363734
623214525
2520211896
41614
524
1238424146
7628172713
3961475147
6049443733
ZN AGPPM PPM
4 *\,234 < t 231 < .2oy s *\oo . \*i29 ^2
12 < t 246 <,264 ^274 <.211 <.2
4 O228 < .217 ^221 ^247 <,2
22 "C, 241 ^238 ^241 <.2An f f\42 s, 2
32 <,231 "C. 251 ^ *2
8 ~\,2tf\ f f\62 s, i
5 \ *268 <.265 <.276 <.288 ^2
25 <.281 <.248 ^268 <.271 < ,2
36 <,224 ^238 < ,250 ^234 < t 2
78 <,277 <,284 ^249 -*:,270 ^2
AUPPB
<5<5^<515
2510
5•^5<5
<5<5^
515
<5^^<5<5
<5<5^<5
<5<5<5^
<5<5<5<5^<5<5<5<5^
<5<5<5<5^
MOPPH
553322
36452
22122
25553
23523
55123
13221
211
212
23233
ASPPM
.8•s. 21.3•^.21,1
1.81,51,3,8
^2
,8.4
1,87,2.8
1.0^.2•^.2^,2<,2
<,2•s, 2^,2
.23,7
1,55.62,4
21,11.8
1.95.61.62.41,9
,61,5
.7,5
2,3
^2,6,3
"N,2
1,9
MO NO i 85-0584 PAGE! A ^
SB BAPPM PPM
.4 48^2 435^2 519<,2 1100•*:,2 762
<,2 266^2 568<,2 175<,2 715<,2 640
<,2 34*:,2 166<,2 155<,2 396^2 334
<,2 156^2 555<,2 1550<,2 234•?,2 900
<,2 94--C, 2 643<,2 545<,2 81*;,2 285
^2 1 0*C,2 720<,2 279<,2 478<,2 1 66
<,2 229"1,2 722<,2 285<,2 219*C,2 262
<,2 3 16.2 1380
•a2 340<,2 441^2 703
<,2 920^2 780<,2 865<,2 314^2 617
- 304 CARLINQVIEW DRIVE 3750 - 19TH STREET ^^ REXDALE, ONTARIO SUITE 105
L ^ — I^B M9W 502 CALQARY, ALBERTA
j^ lJf\ l\l\l r\^JKl\ I'lAljlZJ.V LA (416)675-3870 (403)276-9701
A C F ILE! T5.0584 A M DATE! 08/10/85 M ^ MATRIX! AQ REG w
V ^R, S, MIDDLETON EXPLORATION SERVICES (I, COSTER) PROJ! M-22
SAMPLEID
TS-46TS-47TS-48TS-49TS-50
TS-51TS-52TS-53TS-54TS-55
TS-56TS-57TS-58TS-59TS-60
TS-62TS-63TS-64TS-65TS-66
TS-67TS-68TS-69TS-70TS-71
TS-72TS-72TS-74TS-75TS-76
TS-77TS-78TS-79TS-80TS-81
TS-82TS-83TS-04is-oaTS-86
TS-B7TS-88TS-89TS-90TS-91
CUPPM
4931244547
6037113620
1558222415
1950446136
3025382546
5117614032
188
262010
2835125049
1024222535
ZN A6PPM PPM
65 < > 260 < t 269 < > 268 ',,237 < t 2
39 O238 ^284 ^254 < t 270 *C,2
75 < I 255 ^250 < t 258 < t 245 *:,2
48 ^281 <,272 ^278 <,258 < >2
96 <,274 <,248 < t 218 ^273 *:,2
54 <,283 <,266 < t 239 *:,255 ^2
37 <,253 <,231 ^249 ^245 -*;,2
51 *:,231 <,231 ^251 <,244 < ^2
84 <,267 <,240 *C,248 <,279 *:,2
AUPPB
<5^^<5<5
<5^^<5<5
<55
^<5<5
<5<5^^<5
<5<5^<5<5
<5<5^<5<5
^<5^<5<5
<5<5^<S<5
^5<5^<5<5
MOPPM
53314
68343
213544
44562
23544
43342
22442
320
224
35584
ASPPM
8,1,5
7,04,41,9
10,51,03,8
,5
^2,3
•x, 2•C, 2
,65,9
16,24,4
17,8
1,13,1
,63,11,4
1,5,4,3
1,0•^2
<,2,4
•*J,2•C, 2•S, 2
<,2,3
<,2^ ,2*:,22,7
.2,5
1,8,6
HO NO! 85-0584 PAGE! A
SB BAPPM PPM
<,2 507<,2 362<,2 435^2 201<,2 349
^2 247<,2 71^,2 392*:,2 398<,2 882
^2 891<,2 108<,2 76^2 546<,2 1060
<^2 86<,2 523<.2 487^2 1280<,2 544
*C,2 874<,2 323<,2 8220
,2 351<,2 832
*:,2 283<,2 432<,2 772^2 294<,2 1260
^2 670^^,2 102<,2 459*:,2 465<,2 535
^2 368<,2 195<,2 752•^2 646<,2 1150
<,2 1230<,2 313<,2 248*C,2 445<,2 500
MAGENTA
304 CARLINQVIEW DRIVE REXDALE, ONTARIO M9W 502
(416)675-3870
3750 - 1STH STREET SUITE 105CALQARY, ALBERTA T2E 6V2 (403) 276-9701
FILE; T5.0584DATE: os/io/ssMATRIX: AG REG
c R, S, MIDDLETON EXPLORATION SERVICES (I. COSTER) PROJJ M~22 WO NO} 85-0584 PAGE:C SAMPLE
ID
TS-92 TS-93 TS-94 TS-95 TS-96
TS-97 TS-98 TS-99 TS-100 TS-101
TS-102 TS-103
CU PPM
22 25 15 17 33
2121 16 1615
10 12
ZN A6 PPM PPM
55 *:,2 47 ^2
101 < t 2 72 ^2 70 < t 2
56 <a 57 < >2 21 <,2 51 -C, 2 52 ^2
4 < t 2 4 *\,2
AU PPB
tt
<5 <5 <5
<5 tt tt tt
<5
MO AS PPM PPM
3 2,7 1 ,4 3 1,0 2 ^2 4 1,5
3 s, 2 3 s, 2 5 ,5 3 ^2 2 <,2
4 ,2 j ,5
SB BA PPM PPM
^2 596 <,2 455 *:,2 859 <,2 393 <,2 ' 573
<,2 903 <,2 386 ^2 388 <,2 482 ^2 623
\ i2 8 <,2 17
1600 N
I5OON
A/der, Sprue* .a
Poplar
I3OON
12OON
SpruceB Birch r c
IIOON
lOOON
9OON
SOON
TOON
6OON
BOON
4A/WA Sprue*
BOON
Spree*IQON
a Sonic*
0*00
20 40 W M 100td EQUIGRANULAR OU6AS& ORgrWACKE.,ARMOSE3b LAMINATED MUOSTONE, SH.TSTQNE
-. . L' . J SHEETSPHERULITIC VOLCANO FLOW Zo INTRJwfcOIATe VOUANiC
tL^
PORPHYRY
ROBERT S,ERVics INC(t INTERMEDIATE
WlTHCRVSTOttU^F
RESOURCESCLAIM I NDEX IMP
l" i l/t mtl*Iq INTERMEDIATE ASH TUfFl m INTCRMEOMVlS -MAf 1C LAfn.Ut k WTt^EOIATfi-MAnc TUFF HEMLQ
THUNOiRFOUffTlP MAFIC- -'-- W-* . ' -. DfVJSrGN OfflMopand Sample
I20ON
IIOON
;- TS-98
Sp we t 10QN
9OONQD~X~^^^-X X /— *-
SOONSpruce
B Ald+r
TOON
6OON
* VC * -- 'J* ***--- -.Tp*- 50ON
4OON
Sprucea
BirchSprue*
a 3OON
SOONTS-S3 T-S- 99 ^
c'iEJ-. 2 l OO N
B. L, O-i-OO
W. 9dIOOS
2OOS
30OS
4OOS
50OS
6OOSLEGENDSYMBOLS
ha m H ematite
Md EQUIGRANULAR O IABASfc
jARgHEAN)
3d GREY WACKE, ARKOSE
3b LAMINATED MUDSTONE .SILTSTONEOtologlo Contact
Lulu Fqfric pjk?s and Sills
*Qc APLITEtOb FELDSPAR PORPHYRYtOa QUARTZ FELDSPAR PORPHYRY
2c SPHERULITIC VOLCANIC FLOW ' 2a INTERMEDIATE VOLCANIC FLOW
intermediate to Mote MetgygIf INTERMEDIATE ASH TUFF
WITH CRYSTAL TUFF INTERBEDSINTERMEDIATE, ASH TUFF INTERMEDIATE -MAFIC LAPILLI TUFF INTERMEDIATE-MAFIC TOFF BRECCIA FOLIATED MAFIC tUFF
9d ; PORPHYRITIC (HORNBLENDE)GRANODIORITE BOOS
So fcORPHYRmc, BKmrti -HORNBLENDEQUARTZ MONZONITE J
MA ISe SCHISTOSE GABBRO ^r-r~1 l
Sample Location 9OOS SHEET 2On BIS^ 6
ROBERT S. MIDDLETON EXPLORATION SERVICES
TRhSTAR RESOURCiHEMLO
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B.L..O+OO
IN PHASE QUADRATURE
Instrument Used- GEON1CS E Using Station NAA Cutler Maine Frequency - 17.8 K hz. Facing: NORTH * Dip Angle Crow Over
• -\ -\ *J& l ^.o i *p ' ^o ol " *-
~ _i ^ - - i ' i w i
CLAIM INDEX HAP
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42DWNE*M4 63.4721 PIC220
SHEET
ROBERT S. MIDDLETON EXPLORATION SERVICES INC
TRI-STAR RESOURCES LTD
HEMLO PROPERTY PIC LECOURS TWPS THUNDER BAY MINING DIVISION ONT
VLF EM PROFILE ne. e"*TE SEPT 1985
DRAWN i.e.SCALE 1:2500
APPROVED
NTS *2 D 9
FILE M 22
f
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IN PHASE QUADRATURE lcro ^ 20 fa
InstrumeM Used- GEONICS EM-16Using Station NAA Cutler MaineFrequency ' 17.8 Khz.Facing i NORTHo Dip Angle Cross Over
330
I^OON
I3OON
I2OON
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6OON
SOON
•4OON
3OON
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IOON
B.L.O+OO
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9OOS SHEET 2
ROBERT S. MIDDLETON EXPLORATION SERVICES INC,
TRI-STAR RESOURCES LTD
HEMLO PROPERTY PIC , LECOURS TWPS THUNDER BAY MINING DIVISION ONT
VLF EM PROFILES
l
FI0. 7
SEPT 1985DRAWN I.C.
SCALE l 2500
APPROVED
NTS 42 D 9
FILE M 22