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GEOLOGICAL REPORT ON THE EVANS LAKE PROPERTY

for

Cumberland Resources Ltd.

SAVANT LAKE AREA

PATRICIA MINI ML DIVISION

RECEIVEDJUL27 1987

MINING LANDS SECTION

Thunder Day, Ontario March 30, 198?

Micheal W. Leahey

PAT,-, r...

A. M

JIV.

JUL } 7 !QX

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SUMMARY

The Cumberland Resources joint venture exploration program has outlined an extensive area of hydrothermal alteration typical of Archean base metal deposits on their claim block north of Savant Lake. Beginning in 1984 a limited airborne survey, a lithogeochemical, trace element survey concurrent with reconnaissance and grid geological mapping have been completed on the property. Geophysical ground programs on part of the grid included magnetometer, HEM and PEM surveys. Twelve diamond drill holes totalling 3564.91 m have been drilled as an initial test of geochemical, geophysical and geological features.

The property has many alteration features similar to Corporation Falconbridge Copper's, Winston Lake zinc-rich massive sulphide deposit, that will be going into production later in 1987. Similarly there are many direct analogies to the important Sturgeon Lake massive sulphide deposits 50 kilometres to the south.

Continued exploration effort could pay off with the discovery of an economic massive sulphide deposit on this property.

1. INTRODUCTION

On the Evans Lake property of the Savant Lake joint venture, a five kilometre long sodium depletion zone has been outlined by lithogeochemical sampling. Sodium levels are very low, for the most part less than 11. This alteration zone is expressed as silicification, sericitization, biotitization with the development of aluminosilicate minerals such as sillimanite, staurolite and grossularite within a felsic to intermediate volcanic pile. Near the top of the altered s t ra tigraphy exhalite horizons with pyrite nodules have been mapped.

Twelve diamond drill hol^s were completed on t'ne property in 1906 on a variety of geochemical, geophysical and geological targets. Zinc, copper enrichment and pervasive alteration in the central and southern section of the grid require additional drill follow-up to evaluate this favourable environment for a buried massive sulphide depos i t.

The Evans Lake property is within the Sturgeon Lake supracrustal greenstone belt:. There are currently three Zn-Cu-Ag-Pb base metal producers in the belt. The Mattabi Mine pre-production reserves were 13.67 million tons with the grade of 7.5* Zn, 0.92 di, 0.77'i Pb and 3.10 oz/ton Ag. The Lyon Lake and Creek zone totalled 4.03 million tons of b.66* Zn, 1.15* Cu, 0.63* Pb arid 3.30 oz/ton Ag. The past producer

Falconbridge's NBU deposit hau reserves of 2.li million tons of IQ.64% Zn, 2.981 Cu, l.47'i Pb and 6.14 oz/ton Ag . Three of these deposits occur at the same stratigraphic level and the fourth at a lower horizon. These mines are located at Sturgeon Lake 50 kilometres to the south of the Evans Lake property.

The Evans Lake property also has many similarities to the property of Corporation Falconbridge Copper and Zenmac Mines Limited containing the Winston Lake deposit, 2.675 million tonnes of 17.81*i Zn, Q.94% Cu, 25.3 gm/tonne Ag and 0.85 gm/tonne Au, 27 kilometres north of Schreiber. The aerial, extent of hydrothermal alteration at Evans Lake is 5 km x 400 m; at Winston Lake, the surface alteration zone is 2.5 km x 500 m. The ore body at Winston Lake is a blind zinc rich massive sulphides deposit that did not respond to any airborne or surface geophysical surveys.

This report is prepared at the request of the Board of Directors of Cumberland Resources Ltd. on behalf of Cumberland, Vestor and Redfern. The author visited the property in September 1985, spent tea days mapping on the grid in June 1986 and supervised the diamond drilling from October to December 1986. It is based on a compilation and synthesis of all of Cumberland field programs and a review of published literature on massive sulphide deposits.

2. LOCATION/ACCESS

The property is centred 5 kilometres north of Highway 599 and the CNR rail junction of Savant Lake, approximately 120 kilometres north of the Town of Ignace and 100 kilometres east of Sioux Lookout. A paved Highway 599 passes through the western claims of the property and is met by the Marchington Road 619 near the property's northern boundary. A gravel forest access road parallels Highway 599 east of Evans Lake. The main CNR transcontinental line passes within one kilometre of the southern boundary of the property. The closest shipping port is Thunder Bay, 250 kilometres to the southeast (Figure 1).

3. CLAIM DATA

The current L .ock consists of l leased claim and 185 contiguous unpa tented mineral, claims. The owners of the property are Vestor Exploration Ltd. 251, Redfern Resources Ltd. 25^, ana Cumberland Resources Ltd. 50%. Cumberland Resources Ltd. is the operator and recorded holder of the joint venture claim group.

A list of the claims (Figure 2) and recording date are shown on Page 4.

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CUMBERLANORESOURCES LIMITED

SAVANT- EVANS LA K K PHOPI-IKTY

Property Location Map

dais No. Pa 349297 (Leased

Unpatented

Pa 836300Pa 844700Pa 845319-322Pa 873508-600Pa 874351-355Pa 874381-400Pa 873773-775Pa 846418-422Pa 862895-900Pa 862915-916Pa 862928-930Pa 862935-948Pa 846702-705Pa 862545 r70Pa 863117-166Pa 863107-190Pa 920095-097 *Pa 961584-591 'Pa 963348-353

TOTAL

No. of Claims 1

No. of Claims

114135

2035

1423H

12550

l3aG

106

Registered Date Novenber 16, 1981

Record Date

February 4, 1906February 4, 1906February 4, 1906February 4, 1906February 4, 1906February 4, 1906January 2, 1906July 22, 1905August 1, 1905August l, 1905August 1, 1905August 30, 1905August 30, 1905August 30, 1985August 30, 1905August 30, 1905November 4, 1906November 4, 1906IV-ceinber 3, 1906

Expiry Date N/A

Expiry Date

February 4, 1988February 4, 1988February 4, 1988February 4, 1968February 4, 1908February 4, 1988January 2, 1908July 22, 1987August 1, 1987August 1, 1987August 1, 1987August 30, 1987August 30, 1987August 30, 1987August 30, 1987August 30, 1907November 4, 1907November 4, 1987December 3, 1987

{* Restaked claims after deficiencies found in the original staking)

4. GEOLOGY

In 1906, field work reviewed and enlarged the area covered in 1905. Some detailed work (1:2500 mapping) was undertaken on 1,15+OOS through 1,22 + OOS. The cut grid was extended to L40+-OOS and it. was mapped during the field season under the supervision of H. Kite. Reconnaissance mapping on a 200 m line spacing was initiated but not completed due to poor weather conditions in the Fall. Geology Map Figure 3 presents the property geology known to date. Kite (1905) Geological Survey Report covers the major rock type descrip tions that formed the basis of the 1906 field descriptions. The differentiated felsic to intermediate volcanic pile and volcaniclastic met-.ased iments on the surface grid have been tentatively divided into three mini cycles:

Cycle l Proximal-Vent Rhyolite, Felsic to Intermediate Volcanics

This cycle consists of an upper layer of altered felsic

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CUMBERLAHDRE5OURCES LIMITED

SAVANT- EVANS LAKE PROPERTY

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andvolcanics volcanics , the break layer consists Lake, aphanitic, irregular coarser

a basal layer of The sphalerite showing

between Cycle 2 and Cycle of tuff and

quar tz grained

felsic to intermediate on L16+OOS appears near 1. The felsic volcanic

lapilli tuff. South of MoniqueLake, aphanitic, quartz porphyritic flows occur. An irregular coarser grained quartz porphyritic subvolcanic intrusion was also identified. This area is believed to be a proximal-vent environment for Cycle 1.

Cycle 2 Altered Felsic Volcanics

This cycle consists of a layer of altered felsic tuff and lapilli tuff and a thinner layer of felsic to intermediate tuff, lapilli tuff and local volcaniclastic rocks. Both the upper and lower contacts of this cycle appear altered and mineralized at surface. Silicified, pyrite zones outlined in the Fall of 1985 correspond to this contact.

The felsic member of the cycle consists of lapilli tuff. Alteration is sericite, silicification, local garnet and local pyrite. It appears consistent throughout the map area as a lapilli sized fragmental with matrix support and poorly to moderately sorted fragments. The matrix is altered.

The mixed, basal layer consists of felsic to inter mediate tuff and lapilli tuff north of Sue Lake. Near L17+OOS it grades into local volcaniclastic material. A thin layer of felsic material is also contained in this layer. South of Moniquc Lake the layer consists of discontinuous volcaniclastic rocks.

Pyrite NoduleCycle 3

Tuff - Exhalite Package

Cycle 3 stops at the contact with the overlying intermediate volcanic unit. This contact represents a major break in the deposition of volcanic rock and suggests the longest period of quiescence during which vents were able to deposit exhalite material. In the region between Sue Lake and Monique Lake, this cycle consists of two layers of pyritic exhalite and pyrite nodule tuff separated by a layer of., altered felsic volcanics. A mixed layer of felsic, felsic to intermediate and reworked volcaniclastic material forms the base of Cycle 3.

The exhalite material appears as thin, less than l metre wide bands consisting of fine cherty textured silica and fine pyritic laminations. Exhalites are in the order of 0.5 to 0.1 metres wide.

The pyrite nodule tuff contains ellipsoidal pyrite nodules or fragments up to 2 cm in length, in amounts from 3 to 15* sulphide. It often contains siliceous lapilli sized

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^ ;. r fragments. On surface, these Lwo rock types appear similar |4,: L and have been mapped into the same lithological unit.

feiVH The rocks forming the base of Cycle 3 consist of a thin, K-^;. mixed unit of felsic lapilli tuff, felsic to intermediate ?K tuff and local''thinly bedded volcaniclastics. The felsic f&j* ; , lapilli tuf f appears between L15+OOS to L16+OOS and grades li|;-;-into -.felsic to intermediate tuff to the south. The Ip!^;volcaniclastics appc.Vr to mark the break between Cycle 3 and If'"" ! Cycle 2. On" surface, the contact between 3 and 2 appears to ife be altered and mineralized with pyrite.

;*v South of Moniquc Lake, Cycle 3 consists of a layei: of ;:'. felsic to intermediate volcanics and a relatively thin layer 'y :, o f volcaniclastics. Thu oxha l i te-pyr i te nodule tuff units

were not observed in this area due to poor outcrop exposure . or an environment change.

',- North of Sue Lake, Cycle 3 consists of felsic tuff, lapilli tuff, felsic to intermediate tuff and a basal unit of volcaniclastic material that can be correlated with similar rock types in the area of line L17+OOS.

8

CONCLUSIONS AND RECOMMENDATIONS

To date, widely spaced diamond drilling has initially tested some geophysical, geological and the geochemical model of hydrothermal alteration typical of massive sulphide deposits. Sufficient encouragement and similarities with other blind deposits warrant additional work and fill-in detail drilling on the grid.

South of Monique Lake and west of Highway 599, two areas of QFP and/or subvolcanic vents have not yet been fully evaluated.

As at Winston Lake, the deep massive sulphide did not respond to surface or airborne ground surveys. The two occurrences of surface massive sulphide mineralization (Hadley and Umex in the Savant Lake Project area) are both zinc-rich 10-20?, with low pyrite and copper sulphides and, therefore, cannot respond Lo KM surveys.

The property greenstone belt. identified strong exhalite and d i r; r; urn i nai. od alteration zone .

is situated in the producing Sturgeon LakeGeology mapping and diamond drilling havealteration over significant widths with

sulphides at the top of the

This very favourable geological environment requires persistent exploration to locate blind massive sulphide deposits that may be .situated at different horizons or positions wichin, or at the top of the 5 kilometre long hydrothermal alteration v.onc . The following exploration program io recommended for the property (Figures 3 and 5).

(a) An airborne Electromagnetic a:ul Magnetometer survey of the remaining 135 claims not covered by the original Dighem survey. Reconnaissance geology and rock geochemistry of the unsurveyecl area.

Follow-up ground geophysics and grid mapping to define airborne conductor discovered.

(b) The Goiv/.o Lako area and the new claims (December 1986) most likely cover the strike extent of the Godsil (base and precious metal) showing immediately west of Cumberland boundary. DisscminaU.-d sulphides within strongly altered felsic volcanics were cut in KL-06-11; one anomalous gold value was returned from the drill hole. South of the lake and west of the rond, luiart/, feldspar porphyry has been mapped which may indicate a vent area. Prospecting and detail mapping should be undertaken throughout this area.

(c) Monique Lake South: Cumberland has identified the continuation of the sodium depletion zone under Monique Lake and its extension to the south. Felsic flows and subvolcanic

have boon m.ippod which could repreaont another

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vent area. Hear the baseline bedrock exposure is poor, so hand stripping and washing of outcrop should be completed over the probable extension of the exhalite horizons. A Magnetometer ground survey to broadly outline the alteration over- the remainder of the grid needs to be completed.

(d) Detailed drilling along the exhalite horizon in the vicinity of EL-86-1, 2, 3 plus continued drilling on its extension south of Monique Lake is recommended. Lithogeochem samples and trace element analysis for base and precious metals to be concurrent with the drilling. In-fill samples of some of the 86 holes to be completed to better define other favourable horizon within the volcanic pile. Finally, borehole PEM to be completed on all holes from 86-6 onward.

A continued systematic exploration program property could well discover buried massive mineralization.

for the sulphide

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10

•: Michael W. Leahey. herebycertify-

I am a consulting geologist, and reside at 692 Dalhousie

Drive, Thunder Day, Ontario.I am a graduate oE St. Francis Xavier University, Antigonish, Nova Scotia with the Degree of Bachelor of

Science Major in Geology O973).I have been continually employed in the mining exploration industry since 1973 and am presently a

consultant to the mining industry.

I am registered with the Canadian Institute of Mining

and Metallurgy as a member.I am registered as a Fellow of the Geological

Association of Canada.I do not have, nor do I expect to receive, direct or indirect, any interest in the properties of Cumberland

Resources Ltd.My report is based on my general knowledge, a review oE field data and maps of Cumberland, property mapping and drill supervision from October to December 1986.

This report rcay be used in whole or in part for a

Statement of Material Facts.

Dated at Thunder Bay, Ontario

March 30, 1987

MICHAEL W. LEAHEY Geologist (FGAC)

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ji^'^*^.'"' Report of Work " ' " ^tf/../^^ ; . ln*lrijct ' onsl ~ p leiu* (vp* Of i" im - ^ ?

-- tf number ol mining claims traversed , exceeds space on this form, attach o list,

mod in theMines i;t'ii ...,* - , r (Geophysical, Geological, ' " (Ueopnysica!, Geological, ' /i O *V exceeds space on this form.

Geochemical and Expenditures) ' . O l f) A O ^ Note:- Only days credits calculi;,-X "Expenditures" section mai

Mining Act

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Typo pi Suivoylt)

may bo enteredin the "Expend. Days Cr." columns.

Do not use shaded areas below.

Holdsrlsp

Township or Area

JProspocior't Liccncf Wo.

Address

Survey Company

Name *nd Address ol Author (ol Gi/o-Tcchnicol icooi

Doie ol Survty (Iroro 81 lol Toul Miles ol linu Cut

?4J Credits Requested per Each Claim in Columns at light Mining Claims Traversed (List in numerical sequence)

Expendilurcs (excludes power

Calculation ol Exporu

. . Total Expenditures

Totat^Hiiinby' oiVnining j Iclaims cov^^ijd uAthts y'7/epon o( wikk. j [ l f ______j

',,'' . Toitff Djy* Credits miiy b u iipponioncd .it t lie claim hou or 's• choice, Entor nuinbur of dayi c r od its por

J" In columns a t r ight.

fUcordni Holder; x... i ; ; -. i-:..:: .

township or Are* - ' "-.~CUMBERLAND RESOURCES LTD

LEVANS LAKE AND BOUCHER TOWNSHIP

;,Geophysicali; Electromagnetic.

Type of survey and number of Assessment days credit ptr claim

. Magnetometer.

' Radiometric_

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l, Induced polarization.

- Other———™——.

.days

.days

.days

.days

.— days

Section 77 (19) See "Mining Claims Assessed" column

Geological ___________________40____days

Geochemical ___________________ days

Man days f")

Special provision [y]

Ail borne | |

Ground Q

Q Credits have been reduced because of partial coverage of claims.

FI Credits have been reduced because of corrections to work dates and figure* of applicant.

Mining Claims Asmstd

PA 846418 to 21 inclusive 862556-57-59-60-61 862936 862941-42-43

Special credits under section 77 (1(i) for the following mining claims

20 DAYS GEOLOGICAL

PA 846422 862562

10 DAYS GEOLOGICAL

PA 862938 862947

0*-

No crediti have been allowed for the following mining claims

~'- [~D not 'ufficiently covered by the survey insufficient technical data filed

L Thfl M ining Recorder may reduce tho above credits if necessary in order that the total number of approved assessment days recorded on euch claim does not ''fXCaed the maximum allowed as follows: Geophysical -80; Gco'ogocal - 40; Geochemical - 40; Section 77(19) -60.

Your File: 146 Our File: 2.10233

Development Mines - -; y -

September 8, 1987

Mining RecorderMinistry of Northern Development and MinesCourt HouseP.O. Box 3000Sioux Lookout, OntarioPOV 2TO

Notice of Intent dated August 20, 1987 Geological Survey on Mining Claims PA 846418, tt. al, in the Area of Evans Lake and Boucher Township

The assessment work credits, as listed with the above-mentioned Notice of Intent, have been approved os of the above date.

Please inform the recorded holder of these mining claims and so indicate on your records.

Yours sincerely,

1

R.M.'Charnesky (Mrs.)Acting ManagerMining Lands Section jMineral Development and Lands BranchMines and Minerals Division

Whitney Block, Room 6610 Queen's Park Toronto, Ontario M7A 1W3

Telephone: (416) 965-4888

AB/mccc: Cumberland Resources Ltd

74 Winnipeg AvenueThunder Bay, OntarioP7B 3P9Attention: Wm. Mccrindle

^Resident Geologist *S S ioux Lookout, Ontario

Encl.

Mr. G.H. FergusonMining l Lands CommissionerToronto, Ontario

M.W. LeaheyThunder Bay, Ontario

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