INTRODUCTION

31C1SNWTO8I 63.8646 PALMERSTON 010

The Property

The Substantial Developments property consists of 39 claims in three

groups as follows:

(i) Bolton Lakes Group (13 claims)

Claim nos. EO-37986 to 89, Olden Township

EO-38350 to 58, Olden Township

(ii) Clarendon Group (2 claims) -

Claim nos. EO-218841 and 42, Oso Township

(iii) Cross Lake Group (24 claims)

Claim nos.' EO-38340 81 41, Olden Township

EO-38346 to 49, Olden Township

EO-38535 to 48, Palmerston Township

EO-218843 to 46, Palmerston Township

Location and Access

The property is located in Frontenac County, about 40 miles north-

northwest of Kingston, Ontario. The claims are accessible by local gravel

roads running west from Highway No. 509 at distances of l, 2 and 5 miles

north of the junction of Highways No. 7 and 509 near Sharbot Lake (see

Figure 1).

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Topography

The area is one of outcrop ridges and swampy hollow terrain

trending northeasterly. The ridges and hollows average 200 to 500 feet

across and have a local relief of 30 to 60 feet. The overall relief is

relatively low; maximum and minimum elevations in the area are 950 and

700 feet. Forest cover is thin to moderate and scrubby, and locally dense

in some swampy flats. Outcrop exposure is relatively extensive.

History

The 39 claims were part of a large block of claims staked by

Substantial Developments Limited in 1968-69. A limited amount of trenching

and line cutting was carried out during the summer of 1969.

The property was optioned by the Keevil Mining Group on October 22,

1969 following geological reconnaissance and detailed examination of trenches.

Exploration work on adjacent properties held by Rexdale Mines Limited

consisted of trenching, radiometric surveys and diamond drilling.

Guardian Mines Limited also did radiometric surveying, trenching and

diamond drilling on another adjacent property during 1968-69.

General Geology

The property lies within the Grenville province of the Canadian Shield,

south of the Grenville geomagnetic fence. Geological mapping by the Ontario

Department of Mines (map nos. 1947-5 and 1956-4) indicates the claims are

- 3 -

underlain by marble, paragneiss, and amphibolite, which are cut by granitic

gneiss, all trending generally 045Y45 0 SE and immediately northwest (over

a O to 4 mile span) of the southwest end of a large (5 x 30 mile), younger

intrusive diorite-gabbro and granite complex (see Figure 1).

Uranium mineralization is associated with pegmatites and granite.

WORK DONE

Summary

1. Airborne Radiometric Survey - Flight lines at 1/16 mile spacings

(all 39 claims), for a total of 53.36 miles.

2. Geological Mapping (4 claims - EO-37986 to 89). '

3. Ground Radiometric Survey (4 claims - EO-37986 to 89)

Results of Work

1. Airborne Radiometric Survey

The 230 line-miles of survey data are shown on Map No. l where

the contours represent ppm equivalent UsOg, i.e., the data are presented as

a continuous radiometric assay. Cosmic radiation has been removed from the

data. Background is less than 40 ppm and has not been contoured. Anomalous

zones are represented as in excess of 60 ppm.

- 4 -

Several distinct anomalies exist having amplitudes in excess of 60

and 80 ppm, and these should be prospected.

2. Geological Mapping

The field work on claims EO-37986 to 89 (part of the Bolton Lakes

group) indicates that the claims are underlain by five rock units, all trending

about 040Y035 0 SE. From southeast to northwest the units are as follows

(see Figure 2 and Map No. 2):

(i) White Lake granite; red, gneissic granite

(ii) Marble - white, with 10^, 1/4" - 12" conformable quartz pods

(iii) White pegmatite - quartz-rich, discontinuous, mafic poor,

with minor local uranium and iron stains. This pegmatite

forms the largest pegmatite mass outlined on the property

underlying an area of 300 x 800 feet (see Map No. 2).

(iv) Paragneiss - an amphibole-biotite-quart z-feldspar gneiss

including some granitic gneiss,

(v) Granitic gneiss - pink, partly migmatitic, with pegmatitic

phases.

Pegmatitic phases in the granitic gneiss are red-pink to pink-white

in colour, coarse grained, low in biotite and other mafics (5/S and less), and

lack any significant staining. The pegmatite occurs as scattered and dis

continuous streaks, patches, and sills averaging less than 4 feet in thickness

-5 -

in the northwest part of the claims, and attaining widths of 50 feet to the

southeast. The pegmatites make up approximately 10^, of the rocks in the

northwest part of the claims, and increase in abundance to the southeast,

where they form 25X+ of the outcrop within a l, 500 feet wide strip at the

southeast margin of the granitic gneiss. Within this strip, a pair of

relatively continuous 300 feet wide zones containing 50J^ pegmatite lenses

are inferred.

A small marble lens also occurs in the granitic gneiss (see Map No. 2).

The contacts between the main units were not seen except for one

between marble and white pegmatite on the south side of the latter; that

contact is apparently conformable.

The white pegmatite found on the claims is probably related to the

White Lake granite, and it may be that the pegmatitic phases in the granitic

gneiss are also so related.

3. Ground Radiometric Survey

Uranium mineralization is associated with the granite, white pegmatite,

and pegmatitic phases in the granitic gneiss.

The scintillometer survey (McPhar Spectrometer Type TV-1) gave

indications as follows (see Map No.2):

(i) gneissic red granite - average 4000 - 5000 cpm Tl - overall

- maximum 8000 cpm T l - occasional areasof 10* x 10'

-6 -

(ii) white pegmatite - average 4000 - 8000 cpm Tl - overall

- average 8000 - 12000 cpm Tl - 50' x 100' areas

- maximum 15000 cpm T l - 3* x 3' spots

- the spot highs are associated in some cases with local staining

and/or sandblast locations (this is the only unit on the claims

showing evidence of previous work - three pops were found).

(iii) granitic gneiss - average 2000 - 4000 cpm Tl - overall

- higher average is on more migmatitic material.

(iv) pegmatite, within (iii) - average 3000 - 6000 cpm Tl - overall

- average 6000 - 10000 cpm Tl - about 50' widthsIn a few areas

- maximum 18000 cpm Tl - odd 3* x 3' spot

Background readings averaged 2,000 cpm T l

No significant anomalies, i.e. anomalies lOx background or better,

were found.

-7 -

RECOMMENDATIONS

On the basis of work on these claims and on claim nos. EO-218841

and 42 (Clarendon Group) (detailed geological and scintillometer survey -

not reported) the following recommendations are made:

(i) No further work on claim nos. EO-37986 to 89.

(ii) Reconnaissance radiometric and geological survey on the remaining

claims of the Bolton Lake group, to evaluate and delimit the White

Lake granite, with particular emphasis on checking the ground

immediately beyond the margins of the granite.

(iii) No further work on Clarendon group claims.

(iv) Reconnaissance radiometric and geological examination of Cross Lake

group claims which lie along strike of the Rexdale Mines showings.

Priorities and emphasis to the above derive from the airborne radio

metric results.

espectfully submitted,

L. O. Koskitalo

APPENDIX I

INSTRUMENTATION

The aerial survey was performed with a Beaver aircraft carrying:

1. McPhar Geophysics Ltd. AV-1 3-channel spectrometer

2. APN-1 radio-altimeter

3. DeHavilland MK VII sequence camera

4. MF E 6-channel chart recorder

The survey was flown at 1/16 mile intervals in a NW-SE direction at

a mean terrain clearance of 150 feet,

The McPhar AV-1 - Spectrometer'

The AV-1 spectrometer is of the threshold type, providing the following

outputs:

(a) K 4- U * Th; threshold set at 0.8 MeV

(b) U 4- Th; threshold set at 1.6 MeV

(c) Th; threshold set at 2.5 MeV

The response time for the above three outputs respectively was set

at l, 2, and 3 seconds.

The crystal is of sodium iodide activated with thallium, 4 inches high

and 6 inches in diameter. Three electrically-balanced magnetically-shielded

photomultiplier tubes are optically coupled to the crystal.

A cesium source maintains calibration within l?^ stability in gain

shift and drift over a 24 hour period.

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CROSS LAKE GROUP

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CLAIM LOCATION MAP

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LEGEND

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Claim Pott found

Gneissosity

NOTE

Values plotted are c.p.m. on Ti scale of McPhor spectrometer, Model TV-l

Only anomalous and adjacent limiting readings are plotted

Instrument: McPhar TV-1 Scintillometer.

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