2.8596 MACGREGOR 010

VLF - Survey of Mining Claims 829212, 829213, 829214, and 645041

on Parcel 8Z in MacGregor Township in the Mining District of Thunder Bay

by:

Reino L. Vi i talac- 32251

for:

Alpo Karkkainen E-29047

October, 1985

(i) 2.6596 MACGREGOR O1OC

CONTENTS

PURPOSE

METHOD

Instrumentation

Grid

RESULTS AND DISCUSSION

2

2

FIGURE 1. Index Map

FIGURE 2. Dip Angle Coutours Map

FIGURE 3. Field Strength Contours Map

FIGURE 4. Line D - Profiles

7

8

9

APPENDIX A.

Field Notes

Report of Work Forms

PURPOSE

This survey was undertaken by request from

Mr. Alpo Karkkainen, the claim holder, to delineate any conductive

axis that may be associated with his recent amethyst discovery on

these claims. Secondly, the VLF survey information will be used as

background towards a bedrock geology map of the area. Bedrock struc

tural interpretation can also be confirmed by this survey.

The area is located in MacGregor Township, approximately

10 miles east of Thunder Bay along Highway 11 and 17 east {Figure 1).

Work was performed under work permit #87 for 1985 held by Mr. Alpo

Karkkainen.

- 2 -

METHOD

Instrumentation

Radem VLF-EM receiver was tuned to receive 21.4 KHZ

transmitted from Annapolis, Maryland, U.S.A. (AM). This station

favoured signal strength due to the general strike of the geology

in the area. It was cross-checked with Culter, Maine (CM) period

ically. Dip angle incliometer accuracy is plus or minus half degree.

Field strength accuracy is plus or minus half percent. Instrument

was field checked at #2 post location of claim 829213 before and after

each day's survey. This area had a strong field and -10 south dip

angle.

Grid

A control grid, running south to north was established

on the claims area at 100 metre intervals. Each line has major

stations at 50 metre intervals and sub-stations at each 25 metres

where all readings were taken. Grid was blazed open, measured with

the aid of Brunton compass and chained for distances. Each major

station at 50 metres was flagged with tape and fixed with a metal

tag showing station number. Lines are alphabetical along horizontal

axis and numerical vertically. Each line has 18 stations along it.

- 3 -

Field notes recorded station, dip angle, field

strength, and notes on observations and bedrock geology. Survey

was favoured by dry, cool fall weather. Survey proceeded with a

two lines per day rate with readings at every 25 metres along the

grid lines.

RESULTS AND DISCUSSION

Four separate zones are distinguished by this survey.

In the southern central region of the 4 claim group, an intrusion

of diabase (gabbro) results in strong southerly dipping angles and

above 30(^ field strength. These readings in this southern central

area are also influenced by the volcanics immediately off the southern

boundary of the claims. These volcanics consist of basaltic flows

into old sediments with amethyst veins occurring in a general N.E.

strike direction. The surrounding granite bedrock is altered by these

events into porpheritic and stringers of quartz and amethyst veins

cutting the porphery. Zone two is the granitic porphery area immed

iately adjacent to the intrusive diabase and granite contact in a

loop around the central portion of claims 829213 and 645041. This

zone is a host to some amethyst and quartz veining found on claim

645041. Zone three running N.W. across the central portion of this

4 claim group is a possible fault-zone associated with broken bed

rock of basically granitic texture. The fourth zone lies adjacent to

zone three to the north and consists of coarse grained granite. These

- 4 -

zones can be deduced from Figure 2.

Field strength contours (Figure 3) show the diabase

intrusion in the southern central portion as distinct from the gran

itic background of the remaining area. It is interesting to note

the effect of the fault-zone to the coarse grained granite contact

in the upper two claims 829212 and 829214 as possessing additional

field strength to stand out above background. Isolated dip changes

and field strength increases can be attributed to some small bouldery,

swampy and creekbed zones in several locations within the 4-claim

group.

Figure 4 shows dip-angle and field strength profiles

along grid control line-D. It displays the changes in rock type

and their resultant affects. The cross-over created by the fault-zone

is quite broad and of low dip angle. Mineralization potential is

best in the regions around the diabase/granitic porphery contact.

From observations in the amethyst occurrence on claim 645041 and

areas south of these claims, it is mainly iron metallics and trace

sulphides that are associated with the amethyst veins. These contact

areas warrant further study to determine possible association with

silver in the area with amethyst occurrences. The results from this

survey can help determine areas for future trenching (shallow soils to

bedrock) and reconnaissance drilling locations.

- 5 -

Qualifications on file with:

E.F. Anderson, Director, Lands Management Branch, Whitney Block, Room 6450, Queen's Park, Toronto, M7A 1W3

Reino L. Vi i tala, October, 1985.

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S2A18SWM11 a.8596 MACGREGOR

Mining Lands Section

Control Sheet

900

File No J?.

TYPE OF SURVEY \̂ GEOPHYSICAL

GEOLOGICAL

GEOCHEMICAL

EXPENDITURE

MINING LANDS COMMENTS:

\ Signature of Assessor

Date

Ministry of Report of WorkNorthern Affairs

ad Mines (Geophysical, Geological, Ontario a^B Geochemical and Expenditures)

Inrtructioni: - ftasl type or print.—If number of mining claims traversed

exceeds space on this form, attach s list. Not*: — Only days credits calculated in the

"Expenditures" section may be entered in the "Expend. Days Cr." columns.

- Do not use shaded areas below.Township or Area

^.-———————- Prospector's Licence No.

Name and Address of Author (of Geo-Technical report)

Credits Requested per Each Claim in Columns at riSpecial Provisions

For first survey:Enter 40 days. (This includes line cutting)

For each additional survey^, using the same grid: 'fjj \*

Enter 20 days (for each)

W

Man Days .VfttM

Complete reverse side and enter total (s) here

Airborne Credits

Note: Special provisions credits do not apply to Airborne Surveys.

Geophysical

- Electromagnetic

- Magnetometer

r t Ft8tfm*r*^- Other

^orogk,^

Geochemical -. t-(Vf\f. . Mr\c; SV,\i'*vr \ PvW0^edfWysical

- Electromagnetic

- Magnetometer

- Radiometric

- Other4

Geological

Geochemical

Electromagnetic

Magnetometer

Radiometric

Days perClaim

to

|H-Days per Claim

^rDays per

Claim '

Mining Claims Traversed (List in numerical sequence)Mining Claim

Prefix NumberExpend. Da y t Cr.

Expenditures (excludes power stripping)Type of Work Performed

Performed on Claim(i) , i \.

Calculation of Expendi

Total Expenditures"' ' .

,ys Creditsv f 'in^ '-' s-

InitruTotal Days Credits may be apportioned at the claim holder's choke. Enter number of days credits per claim selected in columns at right.

Mining ClaimPrefix Number

71

Expend. Days Cr.

Total number of mining claims covered by this report of work.

Date

Certification Verifying Repprt of Workl hereby certify that l have a personal and intimate knowledge of the facts set forth in the Report of Work annexed hereto, having performed the work or witnessed same during and/or after its completion and the annexed report is true.

Name and Postal Address of Person Certifying

-Te-cjfrscKJ6tS7Date Certified Certified by (Signature)

V-. x*.1362 (85/9)

REFERENCES

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