geophysical report for old mask v l€¦ · geophysical report for gold mask ventures ltd. 3dip...

GEOPHYSICAL REPORT

FOR

GOLD MASK VENTURES LTD.

3DIP SURVEY ON THE

GM CLAIMS PROJECT (NORTH PORTION)

GRID LOCATION: 50º37'N 120º28'W (NAD83)

Kamloops, BC, Canada

Survey conducted by

SJ GEOPHYSICS LTD.MAY 2011

REPORT WRITTEN BY

DOUGLAS MACLEAN

SHAWN RASTAD

JUNE/JULY 2011

TABLE OF CONTENTS

1. Introduction..................................................................................................................................1

2. Location and Line Information....................................................................................................2

2.1. Access to Property ...............................................................................................................2

2.2. Grid Description...................................................................................................................2

3. Field Logistics and Instrumentation.............................................................................................5

3.1. Field Logistics......................................................................................................................5

3.2. Survey Parameters and Instrumentation...............................................................................6

3.3. Data Quality.........................................................................................................................8

4. Geophysical Techniques..............................................................................................................9

4.1. IP Method.............................................................................................................................9

4.2. 3DIP Method......................................................................................................................10

5. Geophysical Interpretation.........................................................................................................11

5.1. Regional Geology...............................................................................................................11

5.2. Resistivity Data..................................................................................................................12

5.3. Chargeability Data..............................................................................................................15

5.4. Interpretation......................................................................................................................18

6. Conclusion and Recommendations...........................................................................................21

Appendix A. Statement of Qualifications .....................................................................................22

Douglas Maclean.......................................................................................................................22

Shawn Rastad............................................................................................................................23

Appendix B. Survey Summary Tables ..........................................................................................24

3DIP Survey Grid Summary.....................................................................................................24

Appendix C. Instrument Specifications.........................................................................................25

SJ-24 Full Waveform Digital IP Receiver................................................................................25

GDD Tx II IP Transmitter.........................................................................................................25

SJ Geophysics Ltd. / S.J.V. Consultants Ltd. 11966-95A Avenue, Delta, BC, V4C 3W2, Canada iTel: (604) 582-1100 www.sjgeophysics.com

FIGURE INDEX

Figure 1: Location Map of the GM Claims Project.........................................................................3

Figure 2: 3DIP Survey Grid for GM Claims Project.......................................................................4

Figure 3: Sample chargeability decay curves, line 1800S...............................................................9

Figure 4: Inverted Resistivity Plan Map at 50m; Highlighting Resistivity Features.....................13

Figure 5: Inverted Resistivity Section Line 1600S; Moderately High Resistivity Zone R1.........14

Figure 6: Inverted Resistivity Section Line 1800S; Moderately High Resistivity Zone R2.........14

Figure 7: Inverted Chargeability Plan at 150m; Highlighting Chargeability Features..................16

Figure 8: Inverted Chargeability Section 2000S; Moderately High Chargeability Response C1. 17

Figure 9: Inverted Chargeability Section 1800S; Moderately High Chargeability Response C2. 17

Figure 10: Merged 2008 & 2011 Inverted Chargeability Model...................................................18

Figure 11: Chargeability feature; cross sectional view from the southwest..................................19

Figure 12: Correlation of chargeable and resistive features; view from below, looking north.....20

SJ Geophysics Ltd. / S.J.V. Consultants Ltd. 11966-95A Avenue, Delta, BC, V4C 3W2, Canada iiTel: (604) 582-1100 www.sjgeophysics.com

GM Claims Project (North Portion), 3DIP Surveys, 2011

1. INTRODUCTION

A three-dimensional Induced Polarization (3DIP) survey was conducted on the GM Claims

Project for Gold Mask Ventures Ltd., from May 9th to May 17th, 2011. The GM Claims Project is

situated within the Kamloops Mining Division, approximately 7km southwest of the city of

Kamloops. The area has a number of known mineral deposits and the GM Claims Project is

situated between New Gold’s Afton Project and Abacus Mining’s Ajax East and West Pits. The

surrounding deposits and mining activity make the property of significant interest.

The geophysical survey was conducted over the same region as Frontier Geosciences Inc.'s

previous survey completed in 2006. A decision was made to reacquire the data with newer

technology in order to verify results and provide additional information to merge more uniformly

with a 3DIP survey completed to the south by SJ Geophysics Ltd. in 2008. In addition to the

reacquisition of the historic IP survey, lines were extended to the west to gather additional

information on the western side of Highway 5. This year's 3DIP survey was conducted over 13

grid lines, with a total of approximately 18.6 line kilometers surveyed. The initial quality control

of data collected in the field was performed on site by the field geophysicist, while the final data

processing was carried out in the office of S.J.V. Consultants Ltd. in Delta, BC. The final

deliverable products consisted of a the raw field data, logistic report, plan and section maps of

the inverted resistivity and chargeability models.

The operational aspects of the 3DIP survey, equipment specifications, survey methodology,

technical theory, processing methods and resulting data are presented within the following report.

The logistical portions of the report was supplied from Brian Chen's report (Logistical Report

for Gold Mask Ventures Inc., 3DIP Survey on the GM Claims Project, 2011) written following

the survey. Statements of qualifications for the authors are given in Appendix A.

SJ Geophysics Ltd. / S.J.V. Consultants Ltd. 11966-95A Avenue, Delta, BC, V4C 3W2, Canada 1Tel: (604) 582-1100 www.sjgeophysics.com


2. LOCATION AND LINE INFORMATION

2.1. Access to Property

The GM Claims Project is located approximately 7km southwest of the city of Kamloops,

BC, Canada (Figure 1). During the survey period, the geophysical crew was accommodated at

the Econolodge at 775 Columbia Street West, Kamloops, BC. The project site is situated

approximately a 20 minute drive away and is accessed by heading west on Highway 5 heading

out of Kamloops. The survey site crosses the highway and is located at the Ink Lake Rd. off-

ramp site.

2.2. Grid Description

The GM Claims Project was cut and picketed prior to the geophysical crew's arrival by an

outside contractor hired by Gold Mask Ventures Inc. In total 13 lines were marked with line

lengths varying from 1400m to 1600m (Figure 2). All the lines were oriented at an azimuth of

320 degrees to UTM north. The lines were spaced 200m apart with stations at 100m intervals.

Highway 5 intersects six lines at various stations interrupting the continuity for the survey

traverses. Detailed line information of the grid is located in Appendix B. The grid's close

vicinity to Kamloops and intersection with a major highway presented high civilian traffic which

required extra safety precautions. Safety signage and verbal communication were some of the

methods to avoid incidents with non-crew members.

The property covers an area of gently rolling hills covered by light brush and a moderately

dense Ponderosa Pine and Douglas Fir forest. The elevation varies from 950m in the southern

portion to 800m in the northwestern portion of the survey area.

Wildlife encountered on the grid consisted mainly of rabbits, squirrels and black bears. The

climate is characterized by dry, hot summers and low snowfall in the winter months with an

average annual precipitation of less than 30 centimetres. The dry conditions necessitated extreme

care in current electrode and remote placement, in order to avoid any fire hazards.




Figure 1: Location Map of the GM Claims Project



Figure 2: 3DIP Survey Grid for GM Claims Project


3. FIELD LOGISTICS AND INSTRUMENTATION

3.1. Field Logistics

The SJ Geophysics Ltd. crew consisted of six employees, a mix of geophysicists, technicians

and helpers. The following table gives a summary of the personnel involved for the duration of

the survey.

Crew Member's Name Employer Role Dates on site

Brian Chen SJ Geophysics Ltd. Field Geophysicist May 9-May 17

Douglas MacLean SJ Geophysics Ltd. Field Geophysicist May 9-May 17

Matvei Kootchin SJ Geophysics Ltd. Field Technician May 10-May 17

Victor Kulla SJ Geophysics Ltd. Helper May 10-May 17

Kieran Kootchin SJ Geophysics Ltd. Helper May 11-May 17

Colin Bateman SJ Geophysics Ltd. Helper May 11-May 17

The crew stayed at the Econolodge in Kamloops and used two vehicles for transport to, from

and about the survey property. The vehicles were provided by SJ Geophysics Ltd. and used for

equipment and crew transportation. A red Nissan Titan with a six foot trailer was used in

addition to a white Ford Ranger.

Brian Chen and Douglas MacLean mobilized on the morning of May 9th, 2011 from the SJ

Geophysics Ltd. office in Delta, B.C. to Kamloops, BC. Upon arrival, Brian and Doug

conducted a project site visit with Gold Mask Ventures Ltd.'s project manager Richard Lodmell.

Matvei Kootchin and Victor Kulla arrived in Kamloops later that evening with the second truck.

Field work started with survey setup on the following day. Current and remote wires were laid

out. Two helpers, Kieran Kootchin and Colin Bateman arrived in the evening of May 10th via

Greyhound bus.

An initial day of setup was required to lay out remote current stations and current wire to an

established transmitter site. Brian and Douglas accomplished this on May 10th prior to the other

crew member's arrival. Data acquisition started on May 11th and finished on May 16th. The survey

proceeded northward starting from the southern most line 2400S and ended on the most northern



line, 0N. The 3DIP survey covered a total of 18.575 line kilometres. On May 17th, the crew

cleaned up the remaining wires on the grid and demobilized on May 18th to another project.

One of the logistical challenges was the heavy civilian presence. Many of the survey wires

used to transmit electrical current crossed roads that civilian vehicles would drive over and in

many cases caused breaks in the wire. In addition, a nearby dirt bike camp raised the probability

of possible interaction with the general public thus raising the concern for public safety as well as

the logistical interruptions. Warning signs and flagging were put in place in order to inform the

public of the survey's presence and danger. Overall, the crew conducted the survey in an efficient

and safe manner. There were no safety incidents over the course of the survey and the

interactions with the general public were only minor inconveniences.

There were no problems with any part of the data acquisition quality. The local ground

conditions were of low resistance which allowed a good level of current injection thus providing

clean data. There were some cultural noise sources within the vicinity of the project site which

included some nearby power lines that were grounded. This occurred only at the peripheries of

the survey area; therefore, the noise was of little significance.

3.2. Survey Parameters and Instrumentation

The SJ Geophysics Ltd. crew acquired GPS readings at each 100m station with a Garmin

GPSmap 60Csx hand-held device. The coordinates of the survey stations were collected in UTM

projection and NAD83 datum. The GPS data were used to create a location database, which

allows the calculation of the apparent resistivity values and provides the location information

required by the inversion process.

The IP/resistivity data set was collected using an SJ Geophysics SJ-24 Full Waveform

receiver. A GDD transmitter system was used to inject current on a 2 second 50% duty cycle. A

VIP 3000 transmitter system was used as a backup to the GDD system. Instrumentation

specifications are listed in Appendix C.

The potential array was connected using special 8-conductor cables with 100m takeouts for

the potential electrodes. For the potential line, the electrodes consisted of stainless steel pins,

50cm long and 10mm in diameter, which were hammered into the ground. At each current

station (50m intervals), current was injected using two long (75cm) stainless steel electrodes



hammered into the ground. The remote current locations consisted of four 1m stainless steel

rods, 15mm in diameter and a safety warning sign. The receiver dipole array consisted of 11 to

16 consecutive dipoles with 100m dipole spacing and were controlled by one or two receiver

systems. The second receiver was required when the survey lines were interrupted by Highway

5.

The survey parameters used are summarized in the table below.

Array Type Modified Offset Pole-Dipole (3D)

# of Dipoles 11 to 16

Dipole Size 100m

Dipole Array Length 1100m-1600m

Current injection Spacing 100m

IP Transmitter GDD TX II, VIP 3000

Duty Cycle 50.00%

Wave Form Square

Cycle/Period 2 sec on / 2 sec off, 8 seconds

IP Receiver SJ-24 Full Waveform Digital Receiver

Reading Length Minimum 90 sec

Vp Delay, Vp Integration 600ms, 1200ms

Mx Delay, # of Time

Windows

Time Width (Mx Integration)

200ms, 20

36, 39, 42, 45, 48, 52, 56, 60, 65, 70, 75, 81, 87, 94,

101, 109, 118, 128, 140, 154 (200ms-1800ms)

Properties Calculated Vp, Mx, Sp, Apparent Resistivity

For the production phase, the 3DIP configuration consisted of two current lines being

recorded into one receiver line. The current lines were located on either side of the receiver line,

and subsequent lines were surveyed with a single current line overlap.

Four current remotes, located to the north and south of the grid, were used for the duration of

the survey. In an effort to achieve better depth penetration and cleaner data, the northern remotes

were used when surveying the southern side of the lines and vice versa. Gradient shots were also

taken using north and south remotes as the two current injection locations. The exact locations of



the remote currents were acquired by GPS for use in the geophysical calculations. SJ Geophysics

employed a couple of their new proprietary Dabstix digital receivers for test purposes. The data

and the results were not included in this survey.

3.3. Data Quality

The geophysical data goes through a series of quality assurance processes. Prior to

acquisition, it is SJ Geophysics' best practice to acquire a noise strip to determine the background

noise levels and to detect possible bad channels (i.e. poor contacts). Immediately after the full

waveform reading is completed, the data is analyzed in the field to provide the operator a set of

Vp's, Sp's and a chart of the decay curves for each dipole in the array. This gives the operator

valuable information to verify the quality of the data. Also available to the operator are further

tools such as the entire full waveform signal and a fast Fourier transform (FFT) to assist in

troubleshooting possible bad stations.

Each evening, the analyzed data is imported into JavIP (a proprietary IP Database

management system developed by S.J.V. Consultants Ltd.). This package integrates the

locational information with each reading, thus allowing the calculation of the apparent resistivity

and apparent chargeability. The package's interactive quality control tools, plot of decay curves,

table of calculated parameters and a dot plot (graphical display of data of the various

parameters), provide the field geophysicist with a method to verify each data point. After the

field geophysicist removes known bad points from field observations and other obvious outliers,

the database is delivered to S.J.V. Consultants Ltd. for a second review.

The project's data quality was good. For most parts of the grid, the current was kept above

800mA. Approximately 90% of the readings had Vp values greater than 5mV. For resistivity,

approximately 5% of the data has been removed, especially those isolated extremely high or low

values near the null coupling stations.

Although the associated decay curves are a little noisy, they are very acceptable considering

the low chargeability range of values. Thus the quality process was quite stringent on the decay

curves as any questionable curves were flagged for exclusion in the inversion process as

removed. Figure 3 below gives an example of the average decay curve. For chargeability,

approximately 10% of the data were also flagged for exclusion in the inversion process.



Figure 3: Sample chargeability decay curves, line 1800S

4. GEOPHYSICAL TECHNIQUES

4.1. IP Method

The time domain IP technique energizes the ground surface with an alternating square wave

pulse via a pair of current electrodes. On most surveys, such as this one, the IP measurements are

taken on a regular grid of consecutively running stations along parallel survey lines.

After the transmitter (Tx) pulse has been transmitted into the ground via the current

electrodes, the IP effect is measured as a time diminishing voltage at the receiver electrodes. The

IP effect is a measure of the amount of IP polarization within materials in the subsurface rock.

Under ideal circumstances, IP chargeability responses are a measure of the amount of

disseminated metallic sulfides in the subsurface rocks.

Unfortunately, there are other rock materials that give rise to IP effects, including some

graphitic rocks, clays and some metamorphic rocks (serpentinite for example). So from a

geological point of view, IP responses are almost never uniquely interpretable. Because of the

non-uniqueness of geophysical measurements it is always prudent to incorporate other data sets

to assist in interpretation.

Also, from the IP measurements the apparent (bulk) resistivity of the ground is calculated

from the input current and the measured primary voltage. IP measurements are generally

considered to be repeatable to within about five percent. However, they will exceed that if field

conditions change due to variable water content or variable electrode contact.

IP measurements are influenced, to a large degree, by the rock materials nearest the surface



(or, more precisely, nearest the measuring electrodes), and the interpretation of the traditional

pseudo-section presentation of IP data in the past has often been uncertain. This is because

stronger responses that are located near surface could mask a weaker one that is located at depth.

4.2. 3DIP Method

3DIP surveys are designed to take advantage of the interpretation functionality offered by 3D

inversion algorithms. Unlike conventional IP, the electrode arrays are no longer restricted to in-

line geometry. Typically for 3D surveys, current electrodes and receiver electrodes are located

on adjacent lines. Under these conditions, multiple current locations can be applied to a single

receiver electrode array and data acquisition rates can be significantly improved over

conventional surveys while increasing the amount of data collected.

For SJ Geophysics' common 3DIP configuration, a receiver array is established, end-to-end

along a survey line while current electrodes are located on two adjacent lines. The survey

typically starts at one end of the line and proceeds to the other end. Current electrodes are

advanced along the adjacent lines at 100m increments. Receiver arrays are typically established

on every second line.



5. GEOPHYSICAL INTERPRETATION

5.1. Regional Geology

The 43-101 technical report, 43-101 Technical Report on the GM Mineral Claims,

written by E. Trent Pezzot of S.J.V. Consultants Ltd. indicates that the subsurface host rock of

the GM claim is the Nicola eastern clastic sedimentary group covered by a conductive clay layer

followed by a thick layer of overburden at the surface. The nearby Iron Mask Sugarloaf Dioritic

intrusive lithology borders the Nicola group of the GM claim to the northeast. The contact of the

two groups is likely more elaborate when considering the subsurface of the area, which would

present extensions of the intrusive bodies influence within the property. Regional faulting has led

to a number of hypothesized faults within the GM Claims Project which further elaborates the

potential geologic settings of the property. The lack of bedrock exposure within the GM Claims

Project has prevented extensive mapping from taking place; although, surrounding areas have a

high amount of geological information that has been used to extrapolate information. A

northwesterly trending fault, identified as the Cherry Creek Fault, crosses the western portion of

the grid.

Given the nature of the local geology three possible mineralization features may be present in

the area:

1) Alkaline porphyry copper-gold mineralization

2) Epithermal silicification and/or quartz veining

3) Skarn

The mineralization unit of the region appears to be the Sugarloaf Diorite and its intrusions are

often focused by major faults.

The porphyry and skarn deposits give geophysical signatures manifested in highly

chargeable regions. The epithermal silicification and/or quartz veining can be registered as

highly resistive features. Thus, the association of a highly resistive regions in conjunction with

ones of high chargeability can provide good indications of mineralization beneath the surface.



5.2. Resistivity Data

The 3DIP inverted resistivity results indicate a relatively low resistivity environment with

values ranging between 90 Ohm-m and 1000 Ohm-m. The majority of the grid is situated

between approximately 90 and 120 Ohm-m. A colour-shaded contour plan map of the inverted

resistivity at 50m below surface is shown below in Figure 4 This clearly shows a generally

uniform background with a zone of increased resistance in the southern portion of the survey

grid.

The relatively moderate resistive region, R1, is situated in the southeast portion of the survey

grid and is highlighted in Figure 4. The area is bounded by lines 1400S and 2200S, stations

100W to 300E and appears to have a depth extent of approximately 200m. Figure 5 provides a

cross sectional view of this feature. The resistivity values are greatest towards the surface and

diminish with depth. This region's resistivity values lies between 400 Ohm-m and 550 Ohm-m.

The core of this resistivity features forms an inverted v-shape as it trends to the south and the

values diminish. Figure 6 illustrates the separation of the moderately high feature into two

separate zones on a more southern line, 2100S.

Directly to the west of the moderately high resistive zone, R1, is a smaller moderately high

resistivity feature labelled as R2. This feature is bounded by lines 2200S and 1800S and stations

500W to 700W and only appears to have a depth extent of about 100m (Figure 6). It is elongated

in a northwesterly trending direction and appears to parallel the geologically mapped fault.



Figure 4: Inverted Resistivity Plan Map at 50m; Highlighting Resistivity Features

.


R2

R1


Figure 5: Inverted Resistivity Section Line 1600S; Moderately High Resistivity Zone R1

Figure 6: Inverted Resistivity Section Line 1800S; Moderately High Resistivity Zone R2


R1

R1R2


5.3. Chargeability Data

The inverted chargeability models indicates a fairly flat environment with the entire range

of values below 10m. Background can be defined as the region lying between 2ms and 4ms with

potential anomalous regions as zones greater than 6ms. Figure 6 shows the colour-shaded

contour plan map of the inverted chargeability at 50m below surface.

The most prominent chargeable feature is located in the southern portion of the survey grid.

This feature appears to sit down about 100m at depth and trends due north from the most

southern line, 2400S. This indicates it is open to the south. Within this feature lies two small

zones of elevated chargeability values up to 8ms. These are labelled as C1 and C2 where C1 is

centered at station 350W and between lines 2000S and 2200S with an approximate radius of 100.

Feature C2 is centered at station 0E of line 1800S with an approximate radius of 100m. These

two features are highlighted in the cross sections for lines 2000S and 1800S (Figure 8 and

Figure 9, respectively).

A more subtle feature is noticeable in the northwest corner region of the grid at the surface;

however, this increase in chargeable ground occurs within the confines of two roads and a man

made structure that may be causing some cultural noise. As a result, not much importance is

placed on this feature.



Figure 7: Inverted Chargeability Plan at 150m; Highlighting Chargeability Features


C2

C1


Figure 8: Inverted Chargeability Section 2000S; Moderately High Chargeability Response C1

Figure 9: Inverted Chargeability Section 1800S; Moderately High Chargeability Response C2


C1

C2C2


5.4. Interpretation

The regional geology indicates that the geophysical response of chargeable and resistive

regions can exist in one of three possible forms of mineralization as previously mentioned in the

Regional Geology section. The inverted models do not provide strong evidence of a porphyry

body on the 2011 survey grid portion of the property; however, a narrow north trending

chargeability feature still provides an interesting target.

Figure 10: Merged 2008 & 2011 Inverted Chargeability Model

Chargeability Thresholds: Green – 4ms, Yellow – 6ms, Orange/Red > 8ms


C1

C220

11 S

urvey

2008

Surv

ey


Integrating SJ Geophysics' 2008 inverted chargeability model with this year's depicts that this

narrow north trending chargeability feature extends further south and leads to the chargeability

high detected in the 2008 survey. This has been described as a north trending finger (~ 6ms)

from a body of higher chargeability (> 8ms) to the south, as shown in the plan view of Figure 10.

A side view image from the southwest shows the strong continuation of the finger and shows an

apparent downward dip towards the south.

Figure 11: Chargeability feature; cross sectional view from the southwest

Directly associated with the northern flank of this chargeability finger is the zone of

increased resistivity values (R1) and appears to be sitting slightly above the chargeability feature.

Figure 12 provides an oblique view from below the chargeability feature and its association with

the moderately high resistivity zone.


Dipping to South


Figure 12: Correlation of chargeable and resistive features; view from below, looking north

Chargeability Thresholds: Light Green – 6ms, Darker Green > 8ms

Resisitivity Thresholds: Yellow – 200 Ohm-m; Vertical plane is resistivity at ~ 50m depth

The 3DIP data results provided by Frontier Geosciences were similar in locating the general

area of the prominent chargeability zone; however, a few anomalous features highlighted by the

Frontier inverted model have been eliminated. These features were all situated along the edge of

the survey block and may have been the result of edge effects caused by the inversion.

The northwesterly trending fault, identified as the Cherry Creek Fault, mentioned in the

Regional Geology section is not clearly defined by the geophysical survey; however, there is a

subtle northwesterly trend in both the resistivity and chargeability. The inverted resistivity plan

map illustrated in Figure 4 provides the strongest evidence, although very subtle. The most

defining evidence is a northwesterly trend of slightly increased resistivity features along the

mapped location of the fault and a slight drop in resistance to the west.


R1C2

C1


6. CONCLUSION AND RECOMMENDATIONS

Little geological information is available for the GM Claims Project due to the minimal

outcrop presence but extensive faulting and the local lithology has been interpreted from the

surrounding geological information. Considering the local geology, the three forms of potential

mineralization are: alkaline porphyry, epithermal silicification and skarn. A previous three-

dimensional induced polarization (3DIP) survey conducted by SJ Geophysics Ltd. in 2008

indicated a large anomalous chargeable region with associated resistivity in the area southeast of

the 2011 survey grid. The previous region's anomaly resembled a small porphyritic intrusive

system.

This year's 3DIP survey provides possible evidence of a north trending finger of chargeable

material that extends from the small porphyritic intrusive detected in 2008. The total length of

this feature is approximately 1200m (extending from 3000S to 1800S), with a good 800m of it

existing in the 2011 survey grid. The small range of chargeability values (<10ms) suggest we are

looking at subtle features, with the feature only measuring approximately 6ms in a background

between 2ms and 4ms.

Although the chargeability data appears to match quite nicely between the 2008 and 2011

surveys, the two inverted resistivity models have a leveling shift. It is suggested that some

leveling is done and a merged inversion be completed. The resulting merged model than should

be reviewed to verify the correlation between the southern and northern survey zones. As well,

the geophysical models should be compiled with all the geological information available to allow

a fully integrated interpretation of the GM Claims Project.

Respectfully submitted,

per S.J.V. Consultants Ltd.

Douglas MacLean

Shawn Rastad



APPENDIX A. STATEMENT OF QUALIFICATIONS

Douglas Maclean

I, Douglas MacLean, of the city of Victoria, British Columbia, hereby certify that:

1. I graduated the University of Calgary in 2006 with a Bachelor of Arts in

Economics.

2. I have completed three and half years of a four year geophysics degree at the

University of Victoria.

3. I have no interest in Gold Mask Ventures Ltd. or the property within the scope of

this report.

Signed by : on July 7, 2011

Douglas MacLean, B.A. Economics, Future B.Sc. Geophysics.



Shawn Rastad

I, Shawn Rastad, of the city of Coquitlam, Province of British Columbia, hereby certify that:

1) I graduated from the University of British Columbia in 1996 with a Bachelor of Science

degree majoring in geophysics.

2) I have been working in mineral and oil exploration since 1997.

3) My work is regularly reviewed by an active Professional Geophysicist within the

company.

4) I have no interest in Gold Mask Ventures Ltd. or in any property within the scope of

this report, nor do I expect to receive any.

Signed by: _________________________ on July 7, 2011

Shawn Rastad, B.Sc. (Geophysics)



APPENDIX B. SURVEY SUMMARY TABLES

3DIP Survey Grid Summary

GM Claims Project 3DIP Survey Grid

Line Label Series B.O.L Station E.O.L. Station Surveyed length (m)

-2400 N -1100 500 1600

-2200 N -1100 500 1600

-2000 N -1100 500 1600

-1800 N -1100 500 1600

-1600 N -1100 500 1600

-1400 N -1100 500 1600

-1200 N -1100 300 1400

-1000 N -950 300 1250

-800 N -1100 300 1400

-600 N -1100

-475

-800

300

300

775

-400 N -1100

-500

-700

300

400

800

-200 N -1100

-400

-550

300

550

700

0 N -1100 300 1400

Total Line meters = 18575

Current Remotes

Name Easting (NAD83, Zone 10) Northing (NAD83, Zone 10)

North1: -1302N 1250E 680678 5611282

South1: -1601N -1650E 678792 5609091

North2: -401N 750E 679791 5611643

South2: -402N -1300E 678239 5610287



APPENDIX C. INSTRUMENT SPECIFICATIONS

SJ-24 Full Waveform Digital IP Receiver

Technical:Input impedance: 10ΩInput over-voltage protection: up to 1000VExternal memory: Unlimited readingsNumber of dipoles: 4 to 16 +, expandableSynchronization: Software signal post-processing user selectableCommon mode rejection: More than 100 dB (for Rs=0)Self potential (Sp): Range: -5V to +5V

Resolution: 0.1mVProprietary intelligent stacking process rejecting strong non-linear SP drifts.

Primary voltage: Range: 1µV – 10V (24bit)Resolution: 1µVAccuracy: typ. <1.0%

Chargeability: Resolution: 1µV/VAccuracy: typ. <1.0%

General (4 dipole unit):Dimensions: 18x16x9cmWeight: 1.1kgBattery: 12V externalOperating temperature range: -25oC to 40oC

GDD Tx II IP Transmitter

Input voltage: 120V / 60 Hz or 240V / 50Hz (optional)Output power: 3.6 kW maximumOutput voltage: 150 to 2200 VOutput current: 5 mA to 10 A Time domain: 1, 2, 4, 8 second on/off cycleOperating temp. range: -40° to +65° CDisplay: Digital LCD read to 0.001 ADimensions (h w d): 34 x 21 x 39 cmWeight: 20 kg


geophysical report for old mask v l€¦ · geophysical report for gold mask ventures ltd. 3dip...

Documents