magnetometer and vlf-em surveys assessment report … · assessment report south cobalt silver...

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Magnetometer and VLF-EM Surveys Assessment Report

South Cobalt Silver Project South Lorrain Twp.

Mhakari Gold Corp.

March 2011

NTS 31 M/3-4

Meegwich Consultants Inc. P.O. Box 482, Temagami, Ontario POH 2HO Tel. (705) 569-2904 Fax. (705) 569-2817


South Cobalt Silver Project- Mhakari Gold Corp.

TABLE OF CONTENTS

1.0 Summary

2.0 Property Description

3.0 Location and Access

4.0 Magnetometer Survey

4.1 Instrumentation

4.2 Survey Results and Interpretation

5.0 VLF-EM Survey

5.1 Instrumentation

5.2 Survey Results and Interpretation

6.0 Conclusions and Recommendations

LIST OF FIGURES

Figure 1 Claim and Grid Map 1:7500

LIST OF MAPS

Map No.1 Magnetometer contour map of total field 1:2500

Map No.2 VLF-EM Profiles 24.0 KHz. NAA Cutler, Maine 1 :2500




1.0 SUMMARY:

From February 6 to 28, 2011, a program of linecutting and geophysical

surveying was carried out on the South Cobalt Silver Project on behalf of

Mhakari Gold Corp. 141 Davisville Avenue, Suite 506, Toronto, Ontario M4S

1G7. The objective of the work was to map and test a prospective fault

assemblage using magnetic and electromagnetic methods with the goal of

identifying structurally controlled silver deposits.

David Laronde and D'Arcy Ryan performed the grid work and geophysical

surveying on behalf of the contractor Meegwich Consultants Inc. P. 0. Box

482, Temagami, Ontario POH 2HO.

A total of 11.70 km of line was cut and surveyed.

2.0 PROPERTY:

The 8-unit (128 hectares) property is situated in north-east South Lorrain Tp.

close to the historic Silver Centre townsite. It consists of two contiguous

unpatented mining claims described below.

Claim No.

4213005

4213006

Units

7

1

Due Date

May 15,2011

May 15, 2011

Topography on the claim group is rugged with swampy sections covering the

low-lying ground. Water for drilling is abundant in nearby ponds.




3.0 LOCATION AND ACCESS:

As the crow flies the property is located 25 km southeast of Cobalt. Easy

vehicle access is gained by taking Hwy 567 southeast from Cobalt for 33 km.

The highway traverses the east side of the grid while a tertiary road heads

west up a large hill then across the west side of claims.

Larder Lake Mining Division

South Lorrain Tp.

NTS: 31 M/3-4

4.0 MAGNETOMETER SURVEY:

4.1 Instrumentation: A Gem Systems GSM-19 overhauser magnetometer

serial no. 7052358 was used for the survey. These units have an accuracy of

+/- 1/100th of a gamma. 11.70 km was surveyed taking 936 readings at 12.5

meter intervals. An EDA Omni IV base station was used to monitor and

correct for the diurnal variation during the course of the survey. This

instrument reads to 1/10th of a gamma resolution. The base station cycled at

15-second intervals.

4.2 Survey Results and Interpretation: The results are presented in

contour format on plans at 1 :2500 scale.

The magnetic survey reveals the top of a north south trending diabase sill in

contact with Archean metavolcanic rock (background 800-900 nT) to the west.

Readings up to 3000 nT indicate on surface magnetic mineral content within

the diabase. Further east the magnetic background falls to around 700 nT.




The magnetic high is pinched in the middle which might suggest the presence

of the east west trending Forneri fault.

A few outliers of mafic intrusive material are noted at the baseline at 50 and

150 N and also on L 150 to 400 S inclusive at 200 W.

5.0 VLF Electromagnetic Survey:

A total of 11 .70 km was surveyed for a total of 936 readings taken at 12.5

meter stations on lines spaced at 50 and 1 00 meters. All readings were taken

while facing north.

5.1 Instrumentation: A Gem Systems MagNLF-EM receiver (Ser. No.

7052358) was used for the survey. The in-phase and quadrature

components were recorded using VLF transmitting station Cutler, Maine NAA

transmitting at 24.0 kHz. The measured quantities are the in-phase and

quadrature components of the vertical magnetic field measured as a

percentage of horizontal primary field (read to a resolution of+/- 1 %).

5.2 Survey Results: The results of the survey are presented in profile

form on plans at 1 :2500 scale.

The VLF-EM survey yielded very little in terms of prospective conductive

trends. There is however a very marginally weak response associated with an

area of surface trenching at the west boundary of claim 4213006.

Two other responses on L 0 and 100 S further east appear to be related to

conductive swamp cover.




6.0 CONCLUSIONS AND RECOMMENDATIONS:

The magnetic survey has indicated the contact between the diabase sill and

Archea volcanic rock. This is a highly prospective area that indicates that

micro-structure may be present. A series of isolated highs trend north south

along the inside boundary of claim 4213006 could be indicating small structure

or a zone of weakness that allowed the mafic intrusive and possibly silver to

penetrate.

The VLF-EM survey picked up a very weak response over an area of historic

north trending silver veins. A more detailed approach may define a conductor

axis with a silver vein source. Linespacing can be reduced to 10 meters and

reading spacing reduced to 6.25 meters. Alternatively an I.P. survey could be

done to detect mineralization.




References

Geological Map #2361 OGS 1975 Geological Compilation Series

Scale- 1 in to 4 miles

W. H. Mcllwaine 1970 Geologic Report 83 - Geology of South Lorrain Twp.

Meegwich Consultants Inc. P.O. Box 482, Temagami, Ontario POH 2HO Tel. (705) 569- 2904 Fax. (705) 569-2817



CERTIFICATE OF AUTHOR

I, David Laronde of the town of Temagami, Ontario hereby certify:

1. That I am a geology technologist and have been

engaged in mineral exploration for the past 31 years.

2. That I am a graduate of Cambrian College in Sudbury

with a diploma in Geology Engineering Technology

1979.

3. That my knowledge of the property described herein

was acquired by field work and documentation.

Dated at Temagami this 29th day of March 2011.

~~---------David Laronde

Meegwich Consultants Inc. P.O. Box 482, Temagami, Ontario POH 2HO Tel. (705) 569- 2904 Fax. (705) 569-2817

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