View
2
Download
0
Category
Preview:
Citation preview
INTERPRETIVE REPORT
OF
GRAVITY AND MAGNETIC SURVEYS
in
FIRSTBROOK TOWNSHIP
BASED ON
MODELLING
5.16883
JVXLtd. RECEIVED
NO y S log;:;
MININGJ.ANDS 1-3RAIMCH
31M05NW0036 2.16883 FIRSTBROOK 010
INTERPRETIVE REPORT
OF
GRAVITY AND MAGNETIC SURVEYS
in
FIRSTBROOK TOWNSHIP
BASED ON
MODELLING
For: Silver Century Explorationsc/o Hubacheck Consultants Ltd.Suite 1401, 141 Adelaide Street WestToronto, OntarioM5H 3L5Tel: (416) 364-2895Fax: (416) 364-5384
Attention: David W. Christie
By: JVX Ltd.60 West Wilmot Street, Unit #22Richmond Hill, OntarioL4B 1M6Tel: (905) 731-0972Fax: (905)731-9312 f d 3'
r\ r. lContact: Slaine Webster
JVX Ref: 9542 October, 1995
J VX
TABLE OF CONTENTS
l INTRODUCTION .
1.1 GENERAL
1.2 PURPOSE
2 DATA ACQUISITION . . . . . . . . . . . . . . . . . . . . . . . . . 2
2. l SURVEY SPECIFICATIONS . . . . . . . . . . . . . . 2
2.2 GRID SPECIFICATIONS . . . . . . . . . . . . . . . . 3
2.3 PRODUCTION SUMMARY . . . . . . . . . . . . . . . 3
2.4 PERSONNEL . . . . . . . . . . . . . . . . . . . . . . . . 6 O
2.5 FIELD INSTRUMENTATION . . . . . . . . . . . . . 6 o o
2.5.1 Gravimeter . . . . . . . . . . . . . . . . . . . 6
2.5.2 Magnetometer . . . . . . . . . . . . . . . . 6
2.5.3 Chain + Level . . . . . . . . . . . . . . . . 7
2.6 FIELD PROCEDURES ( LEVELING ) . . . . . . . 7
3 DATA PROCESSING . . . . . . . . . . . . . . . . . . . . . . . . . 8
3. l MAGNETICS DATA REDUCTION . . . . . . . . . . 8
3.2 GRAVITY DATA REDUCTION . . . . . . . . . . . . 8
3.3 GRAVITY and MAGNETIC MODELLING . . . . . 9
3.4 DATA PRESENTATION . . . . . . . . . . . . . . . . 10
J VX
LIST OF FIGURES
Figure l : Location Map
Figure 2 : Grid Map
Figure 3 : Gravity Station Configuration
Figure 4 : Gravity Reduction Example
Figure 5 : Gravity/Magnetic Model of Line A
Figure 6 : Gravity/Magnetic Model of Line B
Figure 7 : Gravity/Magnetic Model of Line C
Figure 8 : Gravity/Magnetic Model of Line D
LIST OF TABLES
Table 1A: Survey Specifications for the Gravity
Survey
Table IB: Survey Specifications for the
Magnetometer Survey
Table 2A: Survey Summary for Gravity Survey
(St.spacing 50m, 100m St 200m)
Table 2B: Survey Summary for Magnetometer
Survey (3=12.5 m)
J VX
LIST OF APPENDICES
Appendix A: Specification Sheets
Appendix B: Gravity Reduction Equations
Appendix C: Plates
LIST OF PLATES
Plate l : Magnetic Profiles 1:5000
Plate 2 : Gravity Profiles 1:25000
Plate 3 : Compilation of Magnetic/Gravity Model
1:20OOO
Plate 4 : Compilation Map of Residual Gravity,
Magnetics 8t Topography 1:20000
J VX
l INTRODUCTION
1.1 GENERAL
JVX Ltd. cut survey grid and conducted total field magnetics and gravity surveys from July 29 to August 11, 1995 on behalf of Stiver Century Explorations. The survey was located on the Silver Century property in Firstbrook Township, Ontario (N.T.S. 31 M/5).
1.2 PURPOSE
The purpose of this survey was to develop a geological model which fits the geophysical datasets in order to determine the cause of the local magnetic anomaly.
LOCATION MAP SILVER CENTURY EXPLORATIONS
FIRSTBROOK PROJECTFirstbrook Twp., Ontario
N.T.S. 31 M/5 GRAVITY A MAGNETIC SURVEY
Scale : l : 1,600,000
Surveyed by JVX Ltd. Summer, 1995 Figure l
J VX
2 DATA ACQUISITION
2.1 SURVEY SPECIFICATIONS
Gravimeter
Gravimeter
Station Spacing
Number of Lines Surveyed
Survey Coverage
Lacoste and Rhomberg "D"
Lacoste and Rhomberg "D"
50 metres (100m or 200m on the flank of the anomaly
4 (stn. spacing of 50, 100, 200 m)
6100 metres (50 m) 10700 meters (100 m) 4400 meters (200 m)
Table 1A: Survey Specifications for the Gravity Survey
J VX
Instrument
Sensor Type
Station Spacing
Survey Coverage
Scintrex IGS-2 l MP-4
Proton Precession
12.5 metres
21 600 metres
Table IB: Survey Specifications for the Magnetometer Survey
2.2 GRID SPECIFICATIONS
The survey grid shown in figure 2, is located in Firstbrook Township, Ontario (see Location Map, figure 1). JVX surveyed along lines totalling 21.6 line-kilometres. The baseline runs parallel to Highway 558 and westward from the town of Button's Corners. The remaining grid lines were surveyed along cross lines cut perpendicular to the baseline.
2.3 PRODUCTION SUMMARY
The total gravimeter coverage was 21 200 metres. Total magnetometer coverage was 21 600 metres. The following tables list the survey coverage in detail.
Line
A - Baseline
B
From Station
6000W
3400W
1800W
0
1600E
4000S
3300S
To Station
3400W
1800W
0
1600E
3200E
3300S
3100S
Distance (m)
2600
1600
1800
1600
1600
700
200
Stn. spacing (m)
200
100
50
100
200
100
200
500 m
GRID MAP SILVER CENTURY EXPLORATIONS
FIRSTBROOK PROJECT Firstbrook Twp., Ontario
N.T.S. 31 M/5 GRAVITY Si MAGNETIC SURVEY
Surveyed by JVX Ltd. Summer 1995
Figure 2
J VX
Line
C
D
From Station
3100S
2400S
1800S
1700S
950S
850S
500S
400S
400N
2400S
2100S
2000S
900S
850S
750S
400N
1500N
2400S
1900S
1800S
600S
500S
300S
To Station
2400S
1800S
1700S
950S
850S
500S
400S
400N
1600N
2100S
2000S
900S
850S
750S
400N
1500N
1600N
1900S
1800S
600S
500S
300S
0
Total
Distance (m)
700
600
100
750
100
350
100
800
1200
300
100
1100
50
100
1150
1100
100
500
100
1200
100
200
300
21200
Stn. spacing (m)
100
50
100
50
100
50
100
50
100
100
50
100
50
100
50
100
100
100
50
100
50
100
50
Table 2A: Survey Summary for Gravity Survey (stn. spacing 50, 100, 200 m)
J VX
Line
A - Baseline
B
C
D
From Station
6000W
4000S
2450S
2775
To Station
3200E
1600N
1575N
0
Total
Distance (m)
9200
5600
4025
2775
21600
NO. of Readings
737
449
323
223
1732
Table 2B: Survey Summary for Magnetometer Survey (as 12.5 m)
J VX
2.4 PERSONNEL
Fred Moher (Geophysical Party Chief):Mr. Moher operated the Scintrex IGS-2 l MP-4 and was responsible for data quality, datareduction and the day-to-day operation and direction of the survey.
Gerald Ruygrok (Geophysicist)Mr. Ruygrok prepared the plots, modelled the gravity and magnetic data and preparedthe body of this report.
Alexandra Savic (Geophysicist):Ms. Savic prepared the plots and is responsible for the data storage.
Vaso Lvmberis (Draftsperson):Ms. Lymberis carried out all manual drafting, prepared the compilation map, andassembled and bound the report.
Slaine Webster (President. JVX Ltd.):Mr. Webster provided overall supervision of the survey and interpretation of the data.
2.5 FIELD INSTRUMENTATION
JVX supplied the following geophysical instruments. Additional information about the instruments may be found in Appendix A.
2.5.1 Gravimeter
The Lacoste and Rhomberg gravimeter is a microgal instrument designed to measure the gravitational field at an accuracy of .01 milligals and a precision of .005 milligals. A milligal is approximately one millionth of the normal gravitational attraction of the earth. A gravity range of 200 mgal can be read.
The drift in this instrument is measured at 1.0 mgal/month and less than .5 mgal/month after one year of operation. This is considered negligible. The accuracy of the observed gravity reading is limited by the accuracy of the elevation and horizontal control, the drift of the instrument and the accuracy of tidal acceleration measurements.
2.5.2 Magnetometer
The Scintrex IGS-2/MP-4 proton precession magnetometer system was used to measure the total magnetic field over the grid. A second base magnetometer monitored the background magnetic field at a location off the survey grid. These base station data were used to make the diurnal correction.
J VX
2.5.3 Chain+Level
This device provides vertical control to an accuracy of , 207o (2 mm/m elevation) and can measure a maximum elevation difference of 15 m. Elevation differences are calculated as a function of the pressure difference between two measuring points. Temperature differences at the measuring points are taken into consideration by the instrument.
2.6 FIELD PROCEDURES (LEVELLING)
Grid lines with station pickets at 50 m intervals were surveyed, and elevations established on hubs placed near the pickets in a suitable location for the gravity operator to take the gravity measurement.
Levelling required two operators. Temporary bench marks were established in order to close all open level loops to an acceptable standard of l part in 5000.
All gravity measurements were taken within 2 hours of reading a base station. Two GSC gravity base stations located along Highway 558 were used.
J VX
3 DATA PROCESSING
3.1 MAGNETICS DATA REDUCTION
Prior to the survey, the two magnetometers were synchronized in order to minimize the reduction error. While the magnetic survey was conducted, base station readings were collected on a continuous basis.
The magnetic field measurements, time and position information were recorded in the instrument's solid state memory at the base station and on the grid. At the end of each day the correction for the diurnal shift was made automatically by either linking the base station magnetometer to the field magnetometer or by dumping each magnetometer to a PC and running appropriate JVX software for the drift correction.
Base station readings were subtracted from survey readings in order to remove the diurnal variation of the magnetic field. Noise spikes caused by steel culverts under the road, were edited out on Line A. These data were then reformatted to mapping format and archived on to a floppy disk.
The station spacing is a constant 12.5 m for the magnetic profiles and irregular (ie. 50- 200 m) for the gravity profiles. Only stations with both magnetic and gravity values were used by the modelling software. It is for this reason that some magnetic samples, in particular single point anomalies, have disappeared on the models plots.
3.2 GRAVITY DATA REDUCTION
At the conclusion of each survey day the data were dumped to a PC and backed up on floppy disk. An archive data file was created after editing repeated or unacceptable readings, field errors and format errors. Gravity data reduction was accomplished by a program called GRAVRED.
Base station gravity readings were taken within two hours and at the start and end of each survey day, in order to correct for instrument drift and temperature variations.
8
Once edited, the gravity data were reduced to a datum plan. This was done by applying latitude, earth-tide, free air and elevation corrections, the formulas for which are in Appendix B.
Latitudes and longitudes obtained from a 1:50,000 topographic map were used to first reduce the data to a theoretical earth reference surface (ie. at mean sea level) or geoid, using JYX software.
A correction was made for the elevation of the survey above this datum. Because the increased distance from the earth's center of gravity to the survey elevation point decreases the observed gravity, a free-air correction was made.
This first elevation correction (i.e., Bouguer correction) compensates for the increased attraction of the mass between the datum and each gravity station (ie. the Bouguer slab). The second elevation correction called the terrain correction is applied when there is severe topographic variation. This is required because of the mass attraction of elevated terrain and negative mass attraction due to mass deficiency of lower elevations surrounding each gravity station. Usually, this correction is unnecessary.
Making the above corrections yields Bouguer gravity data. A curve or surface which coincides with the regional trend is often subtracted from these data to produce a residual gravity profile or surface. For this modelling study, the residual gravity values were used for the modelling component of this study.
Both magnetic and gravity datasets were compiled into a file suitable for the gravity/magnetics modelling package GMSYS. Because the station spacing is a constant 12.5 meters for the magnetic survey and 50-200 meters for the gravity survey, some magnetic readings were discarded during the modelling process.
3.3 GRAVITY and MAGNETIC MODELLING
GMSYS displays a calculated gravity curve (an unbroken line) based on the input geological model along with the observed residual gravity readings. The difference or error between the calculated and observed gravity is also displayed. The total field magnetics is similarly displayed.
The input geological model consists of a number of interconnected polygons, each having attached parameters, the main ones being density and susceptibility. General parameters such as the Bouguer slab density (2.65 g/cc), base magnetic field (57000 gammas), declination (13 degrees), anomaly strike (azimuth 45-90 degrees) and profile azimuth are established before beginning the model. The gravity and magnetic model profiles are calculated using these parameters and assume infinite strike length although in reality this parameter is not infinite as in the case of circular anomalies.
9
320 E
.Row CG-3 gravity Base ; 5220mgals l cm : l mgal
l———l———l———l———l———l———l———l———l——1-7*—l———l———l
Reduced CG-3 gravity Base - 5220 mgals 1cm z l mgal
Instrument height .above station Base : O- 5m 1cm - 0 -05 m
Elevation of stations (ASL) Base : 340m 1 cm : 5m
320 E
Ice covered lake (0-7m ice, 1m water)
Raw CG-3 gravity versus Reduced Gravity
Figure 3
Elevation of instrument
Final gravity point of measurementElevation
of Datum Plane
Sea level
GRAVITY MEASUREMENT POINT
Figure 4
J VX
Potential field models in general are ambiguous because an infinite number of geological models produce similar responses. This is the biggest limitation of gravity and magnetic modelling. The geophysical interpretation thus hinges on known geological parameters which help to constrain the model. However, the gravitational model constrains the magnetic model since they are based on the same geological model.
3.4 DATA PRESENTATION
I Toftle plots of the gravity and magnetic data were generated both in the field and in the head office using the GEOPAK Line Processing package.
At the head office, the AUTOCAD computer-aided drafting package was used to add any necessary features (e.g. title block, north arrow).
Plates l and 2 are plots of the magnetic and gravity profiles at a scale of 1:5000 8c l :25000 respectively. Plate 3 is a compilation map of Magnetic X Gravity model at l :20000 scale. Plate 4 is a compilation plot of the topography, magnetics and Residual gravity 1:20000 scale.
3.5 DATA PLOTTING
After being transferred to a field computer at the end of each survey day, the data were examined, corrected, and organized by the instrument operator. Results were plotted on the following printers:
- STAR NX-80 colour dot-matrix printer ' CPSON FX-80 dot-matrix printer
These plots were used to monitor progress and data quality, and to make an initial interpretation. Thus the survey parameters and design were altered when necessary.
Data sets were sent by courier to the head office of JVX in Richmond Hill, Ontario. They were processed and results plotted on the following printers:
- BRUNING ZETA 36 inch pen plotter- TEKTRONIX COLORQUICK ink jet printer- FUJITSU DL2400 colour dot-matrix printer- TEXAS INSTRUMENTS MicroLaser Pro 600 Laser printer
10
J VX
4 INTERPRETATION METHODOLOGY
JVX uses its many years of experience in geophysical interpretation to extract the most accurate information from the data. The procedures involved are simplified for the sake of clarity.
4. l MAGNETICS
Regional data were compared with survey profiles. Geological information was also examined for possible magnetic signatures. A strike direction for the magnetic trend or anomaly was determined for each line of the survey and input as a model parameter. At this point a conceptual model for the magnetic source body was developed.
4.2 GRAVITY
The residual gravity field was interpreted by inspecting the data for anomalously dense bodies, density discontinuities and their depths. Because the wavelength of these anomalies increased with depth of gravitational source, the near surface anomalies were interpreted and modelled after the general trends were determined.
4.3 MODELLING CONSTRAINTS
The magnetic profiles were modelled first using a susceptibility contrast of 0.02 emu/cc for a body whose top is between 600-2200 meters depth. No data on magnetic susceptibilities were available for this study. However, the maximum thickness of the Huronian is approximately 1000m (OGS Report 276) and this thickness was used as a first approximation of the depth to the top of the magnetic source. This source may be a diabase sill which is likely to be located at the contact between the Huronian and the Archean.
The densities used for the gravity model were 2.65 g/cc for the Huronian, 2.8 g/cc for the Archean and 3. l g/cc for diabase dikes and sills. Alluvial deposits such as tills were modelled using a density of 2.3 g/cc. These densities were found to be within the range
11
J VX
of densities of local rock types found in published manuscripts (OGS Report 237, 276). The sill was placed at the Huronian-Archean boundary to be consistent with these published reports.
The gravitational model elements were given zero susceptibility so as not to disturb the magnetic model. The density and geometry of the magnetic body remained constant as the parameters of the gravitational model were adjusted. These restrictions facilitated the fitting of both gravity and magnetic profiles with the same geological model. This is comparable to the geological case where increased magnetite content does not significantly contribute to the overall density of the geological unit while producing a sizable magnetic anomaly.
The north-south lines B, C and D were modelled first. The thicknesses of the geological units where the baseline intersects these lines were transferred to the baseline model and used as fixed points for the geological model.
5 RESULTS and INTERPRETATION
5.1 GENERAL
Magnetic profiles and the observed gravity were plotted on Plates l and 2 at 1:5000 SL 1:25000 scale with posted values. Plate 3 includes the gravity and magnetic profiles as part of the compilation map. This map also displays the thicknesses of the magnetic and gravity sources, referred to as 'magnetic body' and 'dense body' on the models described below. Plate 4 is a compilation plot of observed gravity, magnetics and topography profiles at 1:2OOOO scale. Figures 5 to 8 show the residual gravity and magnetic profiles as well as the geological model which has been developed for each profile.
The regional gravity map for the Cobalt area (OGS map P-2296) shows a prominent gravity high to the west-northwest and a prominent low to the east-south east of the survey grid. The gradient of this field appears to be generally uniform from -32 to -26 mgals within approximately 9 km (length of baseline A) and dipping to the east-southeast.
The observed gravity measurements range from -42 to -28 mgals. There is a significant residual gravity anomaly. The residual gravity field ranges from -40 to -28 mgals. The observed gravity profiles for Lines B.C and D exhibit positive north gradients which are
12
J VX
nearly orthogonal to the regional gradient . This is why the range of measurements changes little from observed to residual gravity.
The magnetic survey grid is dominated by a kidney-shaped magnetic high on the DIGHEM Helicopter Magnetometer survey map. This high is of the order of 2500 gammas and has a strike of approximately 30 degrees.
5.2 GRAVITY/MAGNETIC MODELLING
The modelling results are compiled on Plate 4 which reproduces the gravity and magnetic profiles. The general extent of the geological sources which produce similar gravity and magnetic anomalies as measured in the survey are outlined. This map demonstrates that the gravity and magnetic anomaly sources have similar orientation and extent. These geological features closely parallel the baseline and the existing regional fault pattern which has been reproduced here with slight modification.
Not only are the gravity gradients on the north south lines similar, but there is evidence of a negative gravity response to the small graben which runs through the survey grid from east to west. The regional fault pattern has been altered to reflect the position of the negative gravity anomaly on Line D. The negative gravity anomaly on Line A is slightly out of position with respect to the graben faults but the width of this anomaly suggests a high angle of intersection of the graben with the baseline. The small gravity trough is modelled as a clastic wedge with relatively less dense material.
There appears to be no magnetic response to the graben although some single point anomalies which have been modelled as exposed dikes are near the graben anomaly (eg. Line C, station 900S).
5.2. l LINE A-Baseline (East/West direction)
Line A (Figure 5) is characterized by a broad 2.5 mgal residual gravity high with a low centered about station O. A broad magnetic high with a range in intensity of approximately 1000 gammas coincides with this gravity high. The peak residual gravity is measured east of the north/south lines (east of station O) which suggests that the gravitational source is probably thickest east of the survey grid.
The model has a magnetic source which reaches a maximum thickness of approximately 1200m and tapers to Om past the line in both directions. This source is shallower near Line D and deepest near line B. The magnetic source generally dips to the west as modelled on this line.
A dense body with a maximum thickness of approximately 2100m produces a good fit with the gravity profile. This gravitational body is thickest in the east and fills a wide
13
J i l I I l !—l
GRAVITY l MAGNETIC MODEL - Line A58150 Magnetics
57650 -
•s-a. Observed.
— = Calculated, -f = Error•-Location of Line A
DENSE BODY0=3.1 5=0
ARPHFANLINE BAGNETIC BODY
13=3.1 5=0.01
INEC0=3.1 5=0.02
4500-10000 10000
Distance (meter) Figure 5
J VX
basin (approx. 20 km.) in the Archean. The small gravity low centered at station O is modelled as a thickening of the Huronian.
5.2.2 LINE B (north/south - intersection at station O on baseline)
The residual gravity profile for Line B (Figure 6) is inclined (-39.6 to -SOmgals) to the north with a small trough ( l mgal) centered at the baseline intersection ( station O). A magnetic high of approximately 900 gammas is centered near this gravity low.
The magnetic source is modelled as a prismatic body with a north dip and maximum thickness of 900m. It is at the approximate center of a large basin depression.
Two magnetic diabase dikes which extend to the magnetic source have been included in the model to produce the single point anomalies on the magnetic profile.
The basin depression is the source of the gravity anomaly and is centered north of the profile location. This model has the largest residual gravity anomaly within this survey and the deepest basin extent of all the models.
The small trough near the center of the gravity profile is possibly due to the presence of a clay deposit which was reported by the field crew. A number of east-west faults are reported in this area and two faults are adjacent to this clay deposit (OGS Report 237). This provides evidence for a fault mechanism causing small negative gravity anomalies which are observed on the other survey profiles.
5.2.3 LINE C (north/south - intersection at station 1650 on baseline)
Line C (Figure 7) shows a relatively small magnetic anomaly (approx. 400 gammas) and an inclined gravity anomaly similar to Line B. The residual gravity profile displays a smaller range of values, however the peak is l. Smgals higher than at Line B. This feature is modelled by positioning the dense gravitational body closer to the surface. Figure 7 also shows that the dense body is probably smaller than at Line B.
A small trough on the gravity profile (ie. station lOOOSJis likely caused by a near-surface sedimentary wedge similar to the clay deposit on Line B. This feature is located near a small graben and is likely the same graben which intersects Line B.
The magnetic profile has a relatively lower intensity on Line C compared to the other survey lines. Consequently, the magnetic source is deeper and the gradient is lesser on this model. The model shows that the magnetic source occupies the deepest part of the dense basin unit. Relative to adjacent models for Lines B and D, Line C apparently crosses a saddle on the magnetic source.
A large spike on the magnetic profile is modelled by a magnetic diabase dike which extends from the surface to the magnetic body.
14
J J J j m m r—i n
GRAVITY l MAGNETIC MODEL - Line B
COrt
03
58250 Magnetics
COo'3Q)art
57750 -
57250 -28
= Observed.
CO13boS
O
-35.5 -
Gravity
o = Observed
-500
— = Calculated. -l- = Error
— = Calculated -f ~ ErrorLocation of Line B
O)
4500
DRNRR ROT5Y2000-
-10000 O Distance (meter)
10000 Figure 6
i ~i a mi nn nzi cm LZD LZD nzi rzu
GRAVITY l MAGNETIC MODEL - Line C
58500
g 58000 -O)
cd
57500 -28
Magnetics
= Observed.
en
-35.5 -•g-43
-500
Gravity
*?^ Observed,
O)^j cu
8-Q
2000-
4500
— s Calculated, 4 ̂ tjror
— s Calculated, 4- s ErrorLocation of Line C
DENSRRQDY
0=3. l 5=0.02
0=2.8 5=0
GRABEN FILL0=2.3 5=0
0=3.1 5=0
MAGNETIC BODY
-10000lo
Distance (meter)10000 Figure 7
J VX
5.2.4 LINE D (north/south - intersection at station 5600 on baseline)
The residual gravity range over Line D (Figure 8) is approximately -31 to -35mgals. This is the least anomalous gravity profile within this grid. A relatively small dense body similar to adjacent north-south lines is modelled at the center of a broad Archean basin. A relative increase in the thickness of this dense body and a thinning of the Huronian northward produces the inclined gravity profile. This is consistent with all lines within the grid.
A small gravity trough, similar to Lines A, B and C is also present. The same graben faults, as mentioned above, which are mapped farther to the south (OGS Report 237) may intersect Line D at this gravity trough.
The magnetic intensity falls 800 gammas towards the north. This profile also exhibits the highest gradient of all the profiles in the grid. The model suggests that the magnetic source is relatively shallow (approx. 700m vs. 1200m for Line C). The magnetic source as shown in Figure 8 is large compared to the surrounding gravity source.
There are two positive spikes which may represent magnetic dikes or faults extending from the surface to the magnetic body in this model.
15
L j i — i f — i i — i i — i
GRAVITY X MAGNETIC MODEL - Line D
g 58200B Sctf bo
cy rt bo
57700-
57200-28
Magnetics
^Observed,
CO—Hcd
-35.5 -
E
-43 -500
Gravity
o s Observed.
MAGNRTir RODY
l
o.0)Q
2000-
4500
— = Calculated, -f = Error
- = Calculated, H- = ErrorLocation of Line D
ENSE BODY0=3.13=0
ARPHFAN0=2.8
-10000lo
Distance (meter)10000 Figures
J VX
6 CONCLUSIONS
Based on the models of Lines A to D, the following conclusions are drawn:
* The survey grid is located on an Archean basin which may have influenced the formation of a dense body such as a diabase sill. This basin is as much as 3000m deep.
* This diabase sill and basin structure is centered in the northeast area of the survey grid and the resulting displacement of less dense rock types has probably caused the observed residual gravity anomaly.
* Within this diabase is a magnetic source which is 600-1200m deep. This magnetic source may be relatively shallow under Line D and deepest under Line C. This magnetic body may extend up to 4 km north of the baseline along Line B.
* The regional fault pattern is apparently related to a small residual gravity low on Line B and C which may be further extended to Line D. This graben trends in an east direction and is infilled with clastic material such as clay or till which produces the gravity low.
* The magnetic and gravity anomalies as modelled and presented in this study appear to be controlled by the same basement feature as shown by the coincident location of the mapped gravity and magnetic source features. The gravity and magnetic anomalies appear to closely parallel the regional fault pattern.
* This study would benefit from additional closely-spaced gravity and magnetic lines and additional geological data in order to further constrain the models. Important parameters would include average densities of the rock types involved in this area and their magnetic susceptibilities. Depth control points of the various structures identified by this study would help to fine-tune the models.
16
JVX
If there are any questions with regard to the conduction of the survey or the interpretation of the data, please call the undersigned at JVX Ltd.
Respectfully submitted,
JVX Ltd.
Gerald M. Ruygrok, M.Sc. Geophysicist
Blaine Webster, B.Sc. President
17
APPENDIX A
Background
to the
Geophysical Methods
MAGNETIC METHOD
The magnetic field measured at any point on or above the earth's surface Is a combination of:
1) the earth's magnetic field,
2) the induced magnetization of near-surface material, and
3) the remanent magnetization of near-surface material.
The total measured field is equal to the vector sum of the magnetic field arising from all three factors.
1 THE EARTH'S MAGNETIC FIELD
The earth's magnetic field is similar in form to that of a bar magnet. The flux lines of the geomagnetic field are vertical at the north and south magnetic poles where the strength is approximately 60 000 nT (or gammas). In the equatorial region, the field is horizontal and its strength is approximately 30 000 nT. This field can be considered to be constant in space and time for exploration surveys.
2 INDUCED MAGNETIZATION
An external magnetic field (for example, the earth's) induces the magnetization of a ferrous body. This magnetized body then produces an additional magnetic field, known as the induced field, which is given by the following formula:
where:I s the induced magnetic field (nT) — a vectork = the volume magnetic susceptibility of the materialH s the external magnetic field (nT) — a vector
MAG-1
Thus, the strength of the induced magnetic field is a function of the susceptibility of the body. In turn, the susceptibility is a reflection of the content of ferrous minerals, most importantly magnetite. Note that the induced field is parallel to the external field.
3 REMANENT MAGNETIZATION
The remanent magnetization of rocks depends both on their composition and their previous history. Whereas the induced magnetization is nearly always parallel to the direction of the geomagnetic field, the natural remanent magnetization may bear no relation to the present direction and intensity of the earth's field. The remanent magnetization is related to the direction of the earth's field at the time the rocks were last magnetized. Generally, one can assume that there is no significant remanent magnetization when interpreting magnetic data.
4 DIURNAL CORRECTION
Although the earth's magnetic field is essentially constant, time-varying magnetic fields may result from atmospheric phenomena. Fields due to magnetic storms may vary by hundreds of nanoteslas in a few minutes. Therefore, it is necessary to monitor the background magnetic field constantly using a stationary base station magnetometer. The field measurements can then be corrected for the background magnetic variation. This process is known as diurnal correction.
5 INTERPRETATION
Magnetic data are used to map regions of different magnetic susceptibilities (i.e. ferrous content). The magnetic method cannot detect gold directly, but it can map structures which can aid in locating areas of silicification and carbonization. When used in conjunction with geological and other geophysical data, magnetic data can help select targets which are favourable for economic mineralisation.
MAG-2
APPENDIX B
Plates
Ministry ofNorthern Developmentand Mines
Ontario
Report of Work Conducted After Recording Claim
Mining Act
Transaction Number
Personal Information collected on this form Is obtained under the authority of the Mining Act. This Information will be used for correspondence. Questions about this collection should be directed to the Provincial Manager, Mining Lands, Ministry of Northern Development and Mines, Fourth ROOT, 159 Cedar Street, Sudbury. Ontario, P3E 6A5. telephone (705) 670-7264.
Instructions: -ling assessmeri
31M05NW00362.16883 FIRSTBROOK 900 •k Group, illcate.
- A sKetcn, snowing tne Claims me worn is assignau 10, iiiusi accompany this form.
QtrMvlining
Recorded Holder(s)/-.rk-
Client No.
AddressST. 3-3,0-2,
Telephone No.
Mining Division Township/Area M or Q Plan No. C-'
Dates formed
To: H , t 9*75"
Work Performed (Check One Work Group Only)Work Group
y Geotechnical Survey
Physical Work, Including Drilling
Rehabilitation
Other Authorized Work
Assays
Assignment from Reserve
Type
(S/^CKx/v/ib 0-EoPHys.iCS S^/sv/^/ fcE-Pc&T- g-RfiVITy 2zu.Ry E. X
Total Assessment Work Claimed on the Attached Statement of Costs J1 (o
Note: The Minister may reject for assessment work credit all or part of the assessment work submitted if the recorded holder cannot verify expenditures claimed in the statement of costs within 30 days of a request for verification.
Persons and Survey Company Who Performed the Work (Give Name and Address of Author of Report)Name
.IWy. LT A - - 3/-/9/AJJT io^/ssr/sc
QEfZ.L-'fo J~n . /? M. V ^5/3 o x
Address
6,0 u^^~r ^.L^c-r, UNn ^3,
J? 1 C-H /Vj DfJ b HtLJ- t Qf*J*~rf)felO } J~*Jl^ /S*l b
(attach a schedule if necessary)
Certification of Beneficial Interest * See Note No. 1 on reverse side
l certify that at the time the work was performed, the claims covered in this work report were recorded in the current holder's name or held under a beneficial Interest by the current recorded holder.
Date
OCT. H /1 (^
b P r, F l V b Uri C w i — ' Y *" ——
—— MOV 5 1006 ——
MiMiMft l ANDS BRANCH^Recorded Holder or Agent (Signature)
Certification of Work Reportl certify that l have a personal knowledge of the facts set forth In this Work report, having performed the work or witnessed same during and/or after Its completion and annexed report Is true.
Name and Address of Person CertifyingT.c.
/x// s*Jol
Telepona No. Certified By (Signature)
tstZL
le Notice for Amendment* Sent
For Office Use OnlyTotal Value Cr. Recorded Date Recon Received Stamp
RECEIVEDLARDER LAKE
MININ3 DIVISION
OCT 31/o.'
0241
t?—
OQ op
130P ^
b
5soM oO Numero de claim
op
9:2c o
li
Valwir total* d
3
1
f
*
X
\H9NVHS 3QN\n ONINIW
i
^
^<
91
]3
.61
AI;S AO
30
N c-i.
1 ^L
^V^
fc
ro
?
^
^
^
l)g
^
SJ
^
^ ^
^^
•lillin
i
0.5*Is ||
0C)
e /-r* O" OH 9 5 JO
OP
R travaux a
a une ulteri
recl dat
Les credits que vous reclamez dans le present rapport peuvent etre redults. Afln de dimlnuer les consequences delavorables de telles reductions, veuillez indlquer I'ordre dans lequel vous desirez au'elles solent appliquees a vos claims. Veuillez cocher ( s) I 'une des op tions suivantes :
1. D Les credits doivent etre redults en commencant par le dernier claim sur la liste.2. D Les credits doivent etre redults egalement entre tous les claims figurant dans le present rapport.3. GhLes credits doivent etre redults selon I'ordre donne en annexe. SI vous n'avez pas choisl d'optlon, la premiere sera appllquee.
Note 1 : Examples d'lnterets beneflclalres : cessions non enreglstrees, ententes sur des options, protocoles d 'entente, etc. relatlfs aux claims.
Note 2: SI des travaux ont ete executes sur un terrain falsant I'objet de lettres patentes ou d'un ball, veuillez rempllr ce qul suit:
Je certifle que le tltutaJre enreglstre possedalt un Interet beneflclalre sur le terrain falsant I'objet de lettres patentes ou d'un ball, au moment ou les travaux ont ete executes.
Signature Date
Ontario
Ministry ofNorthern Developmentand Mines
Ministers du Devetoppement du Nord et des mines
Statement of Costs for Assessment Credit
Etat des couts aux fins du credit devaluation
Mining Act/Lol sur les mines
Transaction NoTN" de transaction
Personal information collected on this form is obtained under the authority of the Mining Act. This information will be used to maintain a record and ongoing status of the mining claim(s). Questions about this collection should be directed to the Provincial Manager, Minings Lands, Ministry of Northern Development and Mines, 4th Floor, 159 Cedar Street, Sudbury, Ontario P3E 6A5. telephone (705) 670-7264.
Les renseignements personnels contenus dans la presents formule sont recueillis en vertu de la Lol sur les mines et serviront a tenir a jour un registre des concessions minieres. Adresser toute quesiton sur la collece de ces renseignements au chef provincial des terrains miniers, ministers du Developpement du Nord et des Mines, 159, rue Cedar, 4e etage, Sudbury (Ontario) P3E 6A5, telephone (705) 670-7264.
1. Direct Costs/CoOts directs
Type
Wages Salalres
Contractor's and Consultant's FeesDrolls ds ('entrepreneur et da I'expert- consell
Supplies Used Fournltures utilise**
Equipment Rents! Location ds materiel
Description
Labour Main-d'oeuvreField Supervision Supervision sur le terrain
Typeiv/x.GR/wrty survey
H.U.BACHGCU COMSWiYfl^ PPeXT/rCT tnAftA&ESietfT
Type
Type
Amount Montant
i^.^^Uy
a*/*'-/?
Total Direct Costs Total des couts directs
Totals Total global
l':,
ffo.itt'sa
*9o,s*s?te
2. Indirect Costs/CoOts indirects* * Note: When claiming Rehabilitation work Indirect costs are not
allowable as assessment work.Pour le remboursement des travaux de rehabilitation, les couts indirects ne sont pas admissibles en tant que travaux d'evaluation.
Type
Transportation Transport
Food and LodalnoNourrituro e! hebergemenMobilization Demobilize Mobilisation demoblllsatk
Amount Allowi Montant admiaTotal Value of Total of Direct indirect costs)
Rnd n t t
Description
Type
E C E 1 V E C
NOV 5 1996
Amount Montant
Sub Total of IndlreMl^IWal0•ttI•f^4AtfWl C Cost*
Jlrectsibis (not greater than 20H of Direct Costs) slbls (n'excedant pss 20 H des couts directs)Assessment Credit Vateur total* du credit •nd Allowable d'evaluation
fTotsJ des cote dkvcts
Totals Total global
•C Indlntcts
Note: The recorded holder will be required to verify expenditures claimed in this statement of costs within 30 days of a request for verification. If verification is not made, the Minister may reject for assessment work all or part of the assessment work submitted.
Note : Le titulaire en registre sera tenu de verifier les depenses demandees dans le present etat des couts dans les 30 jours suivant une demande a cet effet. Si la verification n'est pas effectuee, le ministre pout rejeter tout ou une partie des travaux d'evaluation presentes.
Rllng Discounts Remises pour depot
1. Work filed within two years of completion is claimed at the above Total Value of Assessment Credit.
of 1. Les travaux deposes dans les deux ans suivant tour achievement sont rembourses a 100 "to de la vateur Male susmentjonnee du credit d'evaluation.
2. Work filed three, four or five years after completion is claimed at 500xb of the above Total Value of Assessment Credit. See calculations below:
Total Value of Assessment Credit Total Assessment Claimed
x 0.50
2. Les travaux deposes trois, quatre ou cinq ans apres leur achievement sont rembourses a 50 'W) de la valour totate du credit d'evaluation susmentionne. Voir les calculs ci-dessous.
Valour totals du credit d'evaluationx 0.50
Evaluation totale demandee
Certification Verifying Statement of Costs
l hereby certify:that the amounts shown are as accurate as possible and these costs were incurred while conducting assessment work on the lands shown on the accompanying Report of Work form.
that as(Recorded Holder, Agent, Position in Company)
to make this certification
Attestation de I'ttat des coOts
J'atteste par la presents :que les montants indiques sont le plus exact possible et que ces depenses ont ete engagees pour effectuer les travaux d'evaluation sur les terrains indiques dans la formule de rapport de travail ci-joint.
l am authorized Et qu'a titre de je suis autorise(titulaire enreglstre, representant, poste occupi dans la compagnie)
a faire cotte attestation.
Signature
0212 (04/91)
. JLJ,A DCLT. li
Nota : Dans cotte formula, lorsqu'il designe des personnes, le masculin ost utilise au sons neutre.
Ministry ofNorthern Developmentand Mines
Report of Work Conducted Before Recording Claim
Mining Act
Transaction Number
OntarioPersonal information collected on this form is obtained under the authority of (he Mining Act. This Information will be used for correspondence. Questions about this collection should be directed to the Provincial Manager, Mining Lands, Ministry of Northern Development and Mines, Fourth Floor, 159 Cedar Street, Sudbury, Ontario, P3E 6A5, telephone (705) 670-7264. 2.16883Instructions: - Please type or print and submit in duplicate.
- Refer to the Mining Act and Regulations for requirements of filing assessment work or consult the Mining Recorder.
- A separate copy of this form must be completed for each Work Group.- Technical reports and maps must accompany this form in duplicate.- A sketch, showing the claims the work Is assigned to, must accompany this form.
Recorded Holder(s)
QiLVEfc CeMT(xR.V E-Xpi-ORJVno/O^ L.Tb.Address
Mining Division
Date* Work From: ^ ULV 2.1 1 ^I'S Performed '
, -raoNJr-o, OWT. m^ ayvTownship/Area
p |f2s"T"Bi(?.OOK. \ T3A-J2E
Cnent No.
Telephone No.
V/6 - ^^/T1 -X2/2.M or 3 Plan No.
To: flk^fA^ST /l , /^-S"
Work Performed (Check One Work Group Only)
Work Group
^ Regional Surveys
Prospecting
Type
SsouNboeoPHva.c, sueuE y BET**, -SR/W.TV SWX
Total AsRftssrrmnt Work nialmflri on the Attached Statement of Costs $ ?fc *i (a - oO
Note: The Minister may reject for assessment work credit all or part of the assessment work submitted if the recorded holder cannot verify expenditures claimed in the statement of costs within 30 days of a request for verification.
Persons and Survey Company Who Performed the Work (Give Name and Address of Author of Report)
Name
-i'V K Lib-" ^it-AlKEl U3E6fi.Ttlf^.
G Ei? A i-t^ r*\ . /2 u vGs2ok-
Address
(00 UOESTT tOiL/vvOT 'C3"~r ', tANilT 2J2-;
(?!CfH r^Ci/Oi^ H tU.. , OMT-, ^-^f^ l ™(o
(attach a schedule If necessary)
Certification of Beneficial Interest * See Note No. 1 on reverse side
l certify that at the time the work was performed, (he claims covered In this work report were recorded In the current holder's name or held under a beneficial Interest by the current recorded holder.
Date
OCTf. I t /*?k
RECEIVED
NUV 5 1996
MINING LANDS BRANCH*Hecorded Holder or Agent (Signature)
Certification of Work Report1 certify that 1 have a personal knowledge of the facts set forth In this work report, having performed the work or witnessed H during and/or after Its completion, and the annexed report is true.
/L/l/^/E sir. iA( , OAJTrt-KfO .
* /vo/Name and Address of Pereon Certifying
P. CTelepone No
^/6-Certlfied By (Signature)
For Office Use OnlyTotal Value Cr. Recorded Date Record' Received Stamp RECEIVED
URDER LAKE MINING DIVISION
OCT. 311996
02*0 (03/91)
.1~
ii
i
liii
l!jf
s- t '
t
^Ik
005^O
^C ^X
^00CN00
^
X
0000
IM
1
fe
\
|Kxo*
^
^
h"•l^
—
S
fgsf
tf-'f
1
2 t1I
H
1
1
I
'
S45^SX
*
^5
i' '
^ V K
- * - 100
tt
5 Value of Work Done on Land Subsequently Staked as tNs Claim
4
O
^8
0
^^
^
1
^̂
0
D
o
l
0
0
1
0
From Work Dor Land SubaeqiH Staked as this C
SfS*i*s
*S sfi?? i[
ff| ff ?K o———— B
ill*
rsj
^
S^
O
1
1
1EbE
Nl
MNIN(
W 5
i UN
IV S1996
)SBnUh
b
1
-s-M
1CH
' D
i
0
J00
o
3[
0
I
CM
0
5"
"i
3*|flf!i*
Credits you are claiming in this report may be cut back. In order to minimize the adverse effects of such deletions, please Indicate fromwhich claims you wish to prlorize the deletion of credits. Please mark (**) one of the following:
1. D Credits are to be cut back starting with the claim listed last, working backwards.
2. O Credits are to be cut back equally over all claims contained In this report of work.
3. 0Credits are to be cut back as priorized on the attached appendix.
In the event that you have not specified your choice of priority, option one will be Implemented.
Note 1: Examples of beneficial Interest are unrecorded transfers, option agreements, memorandum of agreements, etc., with respect to the mining claims.
Ontario
M.mstry otNorthern Developmentand Mines
Mlnistere du Developpement du Nord et des mines
Statement of Costs for Assessment Credit
Etat des couts aux fins du credit devaluation
Mining Act/Loi sur les mines
Transaction No./N" de transaction
2.16 O :-
Personal information collected on this form is obtalned,under the authority of the Mining Act. This information will be used to maintain a record and ongoing status of the mining claim(s). Questions about this collection should be directed to the Provincial Manager, Minings Lands, Ministry of Northern Development and Mines, 4th Floor, 159 Cedar Street, sudbury, Ontario P3E 6A5. telephone (705) 670-7264.
Les renselgnements personnels contenus dans la presente formule sont recueillis en vertu de la Lol sur les mines et serviront A tenlr a jour un registre des concessions mlnleres. Adresser toute queslton sur la collece de ces renseignements au chef provincial des terrains mlnlers, ministers du Developpement du Nord et des Mines, 159, rue Cedar, 4* etage, Sudbury (Ontario) P3E 6A5. tdWphone (705) 670-7264.
1. Direct Costs/CoOts directs
Type
Wages Salalrea
Contractor's - and Consultant's Fee*Orolts d* ('entrepreneur at de I'expert- consell
Supplies Used Fournltures utilities
Equipment Rental Location de materiel
Description
Labour Main-d'oeuvreField Supervision Supervision sur le terrain
Type j V x. (SfJAvfrY -sicevey
W.A. (UiBUcwEcic fcfjsuwug; PROTECT /nA^xfeeACA/rTyp.
Type
Amount Montan!
4.?o4..ak
3313^
Total Direct Costs Total des coOts directs
Totals Total global
fc'-H**'*-.***msm
P^-a^i/J
*iy!jwj^ -"T^ i*^ vi
2. Indirect Costs/CoOts indlrects* * Note: When claiming Rehabilitation work Indirect costs are not
allowable as assessment work. Pour le remboursement des travaux de rehabilitation, les coats Indlrects ne sont pas admissibles en (ant que travaux devaluation.
Type
Transportation Transport
Food and Lodging Nourritura et h^bergementMobilization aru Demobilization Mobilisation at demobilisation
F
i
DescriptionTyp*
Amount Montan!
iECEIVEp
NOV 5 1996
1INING LANDS BRAN( ;H
Sub Total of Indirect Costs Total partlel des coQts Indlrects
Amount Allowable (not greater than 20H of Direct Costs) Montan! admissible (n'exce'dant pas 20 H des couts directs)
Total Value of Assessment Credit Valeur totale du credit [Total of Direct and Allowable devaluation indirect coiti) (TolAl dtt coflti dirndl
Totals Total global
C , ;V '^ . . .
^^V' :- 'fe";v**.' . ' - -'{
v;-'.--
^"•"•"
*t Indirect* tdmlulblM
Note: The recorded holder will be required to verify expenditures claimed in this statement of costs within 30 days of a request for verification. If verification Is not made, the Minister may reject for assessment work all or part of the assessment work submitted.
Note : Le titulaire enregistrd sera tenu de verifier les depenses demanded dans le present etat des couts dans les 30 Jours suivant une demande a cet effet. Si la verification n'est pas effectude, le ministre peut rejeter tout ou une partie des travaux devaluation pr6sentes.
Fillng Discounts
1. Work filed within two years of completion is claimed at the above Total Value of Assessment Credit.
of
Remises pour d6pot
1. Les travaux deposes dans les deux ans suivant leur achevement sont rembourse's e* 100 "A de la valeur totale susmentionn6e du credit devaluation.
2. Work filed three, four or five years after completion is claimed at 50"M) of the above Total Value of Assessment Credit. See calculations below:
Total Value of Assessment Credit Total Assessment Claimed -
x 0.50 -
2. Les travaux deposes trois, quatre ou cinq ans apres leur achevement sont rembourse's a 50 to de la valeur totale du credit devaluation susmentionne. Volr les calculs ci-dessous.
Valeur totale du credit devaluation
x 0,50 -Evaluation totale demande*
Certification Verifying Statement of Costs Attestation de T6tat des coOts
J'atteste par la pr6sente : ''l hereby certify:that the amounts shown are as accurate as possible and these costs que les montants'indique's sont le plus exact possible et que ceswere incurred while conducting assessment work on the lands shown depenses ont ete engagees pour effectuer les travaux devaluationon the accompanying Report of Work form. sur les terrains indiques dans la formule de rapport de travail ci-joint.
that as(Recorded Holder, Agent, Position In Company)
to make this certification
frSU-Q(3- /ST"l am authorized Et qu'a titre de Je suis autorise(titulaire enreglstr*, reprisentant. post* occup* dans la compagnl*)
faire cette attestation.
Signature Date
0212 Nota : Dans certe formule, lorsqu'il ddslgne des personnes, le masculln est utilise au sens neutre.
Ministry ofNorthern Developmentand Mines
January 30, 1997
Roy SpoonerMining Recorder4 Government Road EastKirkland Lake, ONP2N 1A2
Ministere du Developpement du Nord et des Mines Ontario
Geoscience Assessment Office 933 Ramsey Lake Road 6th Floor Sudbury, Ontario P3E 6B5
Telephone: Fax:
(705) (705)
670-5853 670-5863
Dear Sir or Madam:
Subject: Transaction Number(s): W9680.00526
Submission Number: 2.16883
StatusApproval
We have reviewed your Assessment Work submission with the above noted Transaction Number(s). The attached summary page(s) indicate the results of the review. WE RECOMMEND YOU READ THIS SUMMARY FOR THE DETAILS PERTAINING TO YOUR ASSESSMENT WORK.
If the status for a transaction is a 45 Day Notice, the summary will outline the reasons for the notice, and any steps you can take to remedy deficiencies. The 90-day deemed approval provision, subsection 6(7) of the Assessment Work Regulation, will no longer be in effect for assessment work which has received a 45 Day Notice.
Please note any revisions must be submitted in DUPLICATE to the Geoscience Assessment Office, by the response date on the summary.
NOTE: This correspondence may affect the status of your mining lands. Please contact the Mining Recorder to determine the available options and the status of your claims.
If you have any questions regarding this correspondence, please contact Steve Beneteau by e-mail at beneteau-s@torv05.ndm.gov.on.ea or by telephone at (705) 670-5855.
Yours sincerely,
ORIGINAL SIGNED BYRon C. GashinskiSenior Manager, Mining Lands SectionMines and Minerals Division
Correspondence ID: 10474
Copy for: Assessment Library
Work Report Assessment Results
Submission Number: 2 .16883
Date Correspondence Sent: January 30, 1997 Assessor: Steve Beneteau
Transaction Number
First Claim Number
W9680.00526 1198682
Section:14 Geophysical GRAD 14 Geophysical MAG
Township(s) l A rea(s)
FIRSTBROOK, BARR
Status
Approval
Approval Date
January 14, 1997
Correspondence to:Mining Recorder Kirkland Lake, ON
Resident Geologist Cobalt, ON
Assessment Files Library Sudbury, ON
Recorded Holder(s) and/or Agent(s):
P. C. HubacheckTORONTO, ONTARIO, CANADA
SILVER CENTURY EXPLORATIONS LTD. TORONTO, ONTARIO
Page: l
Correspondence ID: 10474
Ministry ofNorthern Developmentand Mines
March 25, 1997
Roy SpoonerMining Recorder4 Government Road EastKirkland Lake, ONP2N 1A2
Ministers du Developpement du Nord et des Mines Ontario
Geoscience Assessment Office 933 Ramsey Lake Road 6th Floor Sudbury, Ontario P3E 6B5
Telephone: Fax:
(705) (705)
670-5853 670-5863
Dear Sir or Madam:
Subject: Transaction Number(s): W9680.00527
Submission Number: 2.16883
StatusApproval After Notice
We have reviewed your Assessment Work submission with the above noted Transaction Number(s). The attached summary page(s) indicate the results of the review. WE RECOMMEND YOU READ THIS SUMMARY FOR THE DETAILS PERTAINING TO YOUR ASSESSMENT WORK.
If the status for a transaction is a 45 Day Notice, the summary will outline the reasons for the notice, and any steps you can take to remedy deficiencies. The 90-day deemed approval provision, subsection 6(7) of the Assessment Work Regulation, will no longer be in effect for assessment work which has received a 45 Day Notice.
Please note any revisions must be submitted in DUPLICATE to the Geoscience Assessment Office, by the response date on the summary.
NOTE: This correspondence may affect the status of your mining lands. Please contact the Mining Recorder to determine the available options and the status of your claims.
If you have any questions regarding this correspondence, please contact Steve Beneteau by e-mail at beneteau-s@torv05.ndrrt.gov.on.ea or by telephone at (705) 670-5855.
Yours sincerely,
ORIGINAL SIGNED BYRon C. GashinskiSenior Manager, Mining Lands SectionMines and Minerals Division
Correspondence ID: 10669
Copy for: Assessment Library
Work Report Assessment Results
Submission Number: 2 .16883
Date Correspondence Sent: M arch 25, 1997 Assessor: Steve Beneteau
Transaction Number
First ClaimNumber Township(s) l A rea(s)
W9680.00527 1211461
Section:14 Geophysical GRAY
FIRSTBROOK, BARR
Status
Approval After Notice
Approval Date
March 21, 1997
Please disregard all previous notices pertaining to W9680.00527. Assessment work credit has been approved as originally outlined on the Report of Work form.
Correspondence to:Mining Recorder Kirkland Lake, ON
Resident Geologist Cobalt, ON
Assessment Files Library Sudbury, ON
Recorded Holder(s) and/or Agent(s):P. C. HubacheckTORONTO, ONTARIO, CANADA
SILVER CENTURY EXPLORATIONS LTD. TORONTO, ONTARIO
Page: l
Correspondence ID: 10669
SILVER CENTURY EXPLORATIONS LTD.FIRSTBROOK PROPERTY
EXPENDITURE STATEMENT PERIOD: JULY 1 -AUGUST 31, 1995
Date Item Amount
July 31 JVX Ltd. - Gravity Survey S 5,000.00 July 31 The Messengers - Courier 49.00 July 31 W.A. Hubacheck Consultants
-Office Administration 379.83July 31 P. Hubacheck -Geol. Supervision - 1#tey -e ,-, ^ ^ 365.00" ' ' ' ' ' 'Aug. 10 JVX Ltd. - Gravity Survey c ; ;- 2\825.04 Aug. 31 W.A. Hubacheck Consultants
-Office Administration 1.225.57 Aug. 31 P. Hubacheck - Geol. Supervision -1 day 365.00 Aug. 31 Strategex Ltd. 1.372.85
Total: S30,582.29
Total cost of survey: 330,582.29Total # of line-km. : 21.2Cost/line-km. = S 1,442.56
19.3 line-km. lie within claim boundaries - S27,841.41 can be applied for assessment credit (see attached sheet).
This statement is compiled from accounting ledgers supplied by W.A. Hubacheck Consultants Ltd. and Silver Century Explorations Ltd.
Certified at Toronto on October 11, 1996 by:
Peter C. Hubacheck, P. Geol. W.A. Hubacheck Consultants Ltd.
RECEIVED
NOV 5 1996
LAND?
APPENDIX
2.16883Credits have been taken from Claim Nos. 1211461,1211463 and 1211464 to apply to
Claim Nos.- il^SS^WI^^HaWBBRBSSIItln the event that credits must be cut back from the first three claims, please take the credits to be applied on Claim Nos. -l 198682,"^ 19683 and 1198684 from 1202664 and 1202668.
Thank you!
Ae&L A -ULLA M. KNOWLESW.A. Hubacheck Consultants Ltd.
RECEIVED
NOV 5 1996
MINING LANDS BRANCH
Z,NE 17790 46'
J59300C-1E 40
TOWNSHIP, ,( ,;;H U D S O M
1198153
1200013
19855
138553
1470
.J 84 l ll———M- ———— ,.
H 98(5852II46&
1211463
1211469 — —r—W
COLEMN TOWSHIP
x i .2. V
Ministry ofNaturalResources
Ministry ofNortborn Developmentand
OntarioRF.SIDHNT
INDEX TO LANil DISPOSITION
PLAN
G-3427TOWNSHIP
FIRSTBROOK
MN.H ADMINISTRATIVE DISTR'CT
TEMAGAMIMINING DIVISION
LARDER LAKELAND TITLES/REGISTRY DI"ISIQH
TIMISKAMING
no
2-16883Scale 1:20000
1000Moire*
1000—l
2000 s l *'.-frol
OoCM
1000 1000F**l
2000i—
3000 4000 5000 6000 7000 oooT- Liirrr
9000 10000 i FM!
Contour Interval 10 Metres
AREAS WITHDRAWN FRO
RECEIVED
NOV 5 199B
MRO- Mining Rights Or ly
SRO- Surface Rights OnlyM f S - Mining and Surface Rights
SYMBOLS.'ripllon . 3ft4fc|
SIC MSM.
Order No..W.Z/H
**jii W
Date Disposition IS/I/** S.R.O.
Fito7398 vol. 19
BoundaryTownship, Meridian, Baseline.
Road allowance, surveyed
shoreline.
;Lot/Concession; surveyed.
unsurveyed
Parcel; surveyedunsurveyed
flight-of-way; road
railway utility.
Reservation
Cliff, Pit, Pile . . , . . . . . .
Contour . . Interpolalrd
.Approximate repression.
Control point (horizontal)
Flooded Ir.nd . . . . . . . . . . . . . . . . . . . .
Mine headjrame
Pipeline (above ground! . . . . . .
Railway; single track. double track. abandoned
Road; highway, ci'unty, township
access
trail, bush
Shoreline (original).
Transmission line . . . . . . . . . . . .
Wooded area . . . . . . . . . . . . . . . . . . .
\-f \,c.\y-
CO— j cri
C"-OO
•T)
3O 5840oomE 50790 52
ZONE 17
DISPO^II ION OFPatent
Surface S Mining Rights Surface Rights Only
Mining Rights Only.
LeaseSurface A Mining Rights
Surface Rights Only Mining Rights Only
Licence of Occupation
Order-in-Council.
Cancelled
Reservation.
Sand a Iravel. AGGREGATE PERMITS jft
THIS TOWNSHIP FALLS WITHIN THE TEMAGAMI COMPREHENSIVE PLANING AREA. SPECIAL WORKING CONDITIONS MAY APPLY TO EXPLORATION ACTIVITIES. FOR MORE DETAILS PLEASE CONTACT:
DISTRICT MANAGER. NORTH BAY DISTRICT MINISTRY. NATURAL RESOURCES
NOTICE OF FORESTRY ACTIVITYTHIS TOWHSN* l AREA FALLS WITHIN THE ———.
MANAGEMENT UNIT
i
H
.y
.oc
AND MA Vfle SUBJEC T. THE MMR UHT FORESIKR,FOR THIS Aft6A CAN BE CONTACTED AT; P.O. BOX 38
LAKESHORE DRIVE TEMAGAMI. ONT.POH 2HO705 569 3622
THE INFORMATION THAT APPEARS ON THIS MAP HAS BEEN. 'COMPILED FROM VARIOUS SOURCES. AND ACCURACY IS NOT GUARANTEED THOSE WISHING TO STAKE MIN ING CLAIMS 6HOULD CON SULT WITH THE MINING RECORDER,-MINISTRY OF NORTHEW DEVELOP MENT AND'MINES, FOR AD DITIONAL INFORMATION ON THE S*fcTUS OF jTHE LANDS SHOWN HERBpN
•M riiqflU MIMMrwni UIMMT AM.iSurl
j 'h. MiMM Ac: K .S.3. ,3*O. OMOCM MO.
Zou* MTIMUIVW 4O 29 mcitrt w i42 fi. on IWNMT
CIRCULATED MAY 3/88ARCHIVED JANUARY 9. 1993
Map base and land disposition dr*Wng by Surveys and Mapping Branch, Ministry of Natural Rei^urces
The disposition of land, location of lot fabric and parcel boundaries on this index was compiled for administrative purposes only. rv)-N|
BARR
1000
,. i/ 1 / y
:-4i V ^',i; v
•V; ^ , .//-y ^'~
2II460
Yx i i w. 1 12 I221Y23
V, - L *^-/x , w ̂ ; ^L: \ \
1230607
) l ^-'\
KITTSOM" TOWNSHIP COLEMAN \\TOWNSHIP, ^ l
..
Ministry of Ministry ofNatural Northern DevelopmentResources and Mines
ol
o
INDEX TO LAND DISPOSITION
PLAN
G-3407TOWNSHIP
M.N.R. ADMINISTRATIVE DISTRICT
TEMAGAMIMINING DIVISION
LARDER LAKELAND TITLES/ REGISTRY DIVISION
TIMISKAMING
Scale 1:20 000
1000
1000 2000 3000 4000--t—^ sooo eooo 7000 BOOO
2000 ~r:j Volr**
9000 10000
Contour Interval 10
GEOLOGY REFERENCE COBALT" RESIDENT GEOLOGIST
SYME OLS
HONVHQ SQNVT 9NINII/M
*96bl ^ AON
Q 3 A I 3 O
AREAS W ITHDRAWN FROM DISPOSITION
MRO - Mining RighiS OnlySRO - Surface Rights OnlyM * S - Mining and Surface Rights
Description Order No. Oil* DUpOK' .on Fll.
Township, Meridian, Baselino.
Road allowance; surveyed shoreline.
Lot/Concession; surveyed... unsurveyed
Parcel; surveyed unsurveyed
Right-of-way; road ........ .. .railway ..........utility.
Reservation
Cliff, Pit, Pile.......................
Contour Interpolated Approximate Depression.
Control point (horizontal)
Flooded land
Mine head frame
Pipeline (above ground)
Railway; single track. ' double track
abandoned
Road; highway, county, township access trail, bush
Shoreline (original).
Transmission line
Wooded area
ft rtHMTS fcc*
PUBLIC RESERVE JUNE l/X19 too/or vol.z
OD
16883...... A
. uNOTE
FLOODING CN LADY EVELYN LAKE TO CONIoUK O. ELEV.94H.4b' LO 7458
IWNG CLAIMS STAKED AROUND THE SHORES OF ADY EVELYN LAKE AND RIVER
SUBJECT TO PLOODMO L O 14*7 HEP OF ONTARIO
H
"̂U
^ 41 .C. PIT RCKRVES IM* 014
THIS TOWNSHIP FALLS WITHIN THE TEMAGAMI COMPREHENSIVE PLANING AREA. SPECIAL WORKING CONDITIONS MAY APPLY TO EXPLORATION ACTIVITIES FOR MORE DETAILS PLEASE CONTACT:
DISTRICT MANAGER.NORTH BAY DISTRICTMINISTRY. NATORArTTEsouRCES
DISPOSITION OF CROWN LANDSPatent
Surface 8. Mining Rights Surface Rights Only Mining Rights Only.
.e
.o
.B
.B
LeaseSurface 8. Mining Rights ... Surface Rights Only Mining Rights Only.
Licence of Occupation
Order in-Council.
Cancelled . ...................................9
Reservation.......... ....... . ............. CJ
Sand 4 Gravel................................. C1Remote tuunst set-up
•JW5*
.............. .OC
NOTICE OF FORESTRY ACTIVITYTHIS TOWNSHIP l AREA FALLS WITHIN THE —^LATCHFORD MANAGEMENT UNITAND .
LAKESHORE DRIVE TEMAGAMI. ONT. POH 2HO 705-569-3622
Map base and land disposition drafting by Surveys and Mapping Branch, Ministry of Np.'.jral Resources.
JSL
THE INFORMATION THAT APPEARS ON THIS IV AP HAS BEEN COMPILED FROM VARIOUS SOURCES, AND ACCURACY IS NOT GUARANTEED THOSE WISHING TO STAKE MIN ING CLAIMb SHOULD CON SULT WITH THE MINING RECORDER, MINISTRY OF NORTHERN DEVELOP MENT ANDA/IINES, FOR AD DITIONAL INFORMATION ON THE STATUS OF THE LANDS SHOWN HEREON
"THIS MAP SHOWS THE APPROXIMATE LOCATION OF THE BOUNDARIES OF THE AREA WHICH IS THE SUBJECT OF CURRENT LITIGATION. THE EXACT LOCATION WILL BE SHOWN FOLLOWING CONFIRMATION BY THE/ PARTIES TO THE ACTION."
CIRCULATED APRIL 19/88ARCHIVED JANUARY 9 . 1 999 '
ARCHIVED SEPT. 18, 1996The disposition of land, location of lot fabric and parcel boundaries on this' idex was compiled for administrative purposes only.
G") i
01
O-si
LINE A
o oo oO CDCD in
o oCOLO
o o
o o
in in
D OO OO CDin "3-
oD CD
oO
O O CM
o oa
o o CD m
o oCOco
o o -3- on
oCD CMm
o oCDen
D O CD CNJ
O D CD CsJ
O D ••t CM
O O CM CsJ
O O O CM
O D CD
O O CO
D OD OM- CM
O Oo
o a CD
c oCD
Oa
o oCM
UJ
CO CL CD
UJ LUUJLULiJLiJUJbJUJLU
O O CM
O O
OoCD
Oo a o oCD i
DoCM
Oo
oD CD
O O OD
CD OO CM
O O CMCM
D D "4- CM
O O COCM
UJ
DO OD CM
UJ UJ
O O Om
o oCM CD
LIN H D
•J- en en o o
enCD DO
BPSE LINE
200 S
400 S
600 S
80C S
1000 S
1200 S
MOO S
1600 S
1800 S
2000 S
2200 S
2400 S
en en o o
en o
D
l O CO
o
en en o o
1500 N
MOO N
1230 N
1000 N
800 N
600 N
400 N
200 N
BflSE LIN?
200 S
400 S
600 S
800 S
1000 S
1200 S
!400 S
1600 S
1800 S
2000 S
2200 S
2400 S
CDen o
tti
en en o
LIN H c
enen o
CD en a
O
ioW
en eno
CDen o
1600 N
1400 N
1200 N
1000 N
800 N
600 N
400 N
200 N
BflSE LINE
200 S
400 S
600 S
800 S
1000 S
1200 S
1400 S
1600 S
1800 S
2000 S
2200 S
2400 S
2600 S
2800 S
3000 S
3200 S
3400 S
3600 5
3800 S
4000 S
Lil H B
O CO
1600 IJ
1400 N
1200 |J
1000 fJ
800 N
600 N
400 N
200 N
BflSE LINE
200 S
400 S
600 S 1
800 S
1000 5
1200 k
1400 p
1600 ki
1800 K
2000 55
2200 S
2400 5
2600 S
2800 S
3000 S
3200 S
3400 S
3600 S
3800 S
4000 S
o ,.v.-nn j
PROFILE SCALES:
Topography—l cm — 1 0 meters
Magnetics——l cm = 200 gammas
Gravity———l cm = 0.5 mgals
o -"- xJA- l -L
2.16883R E C E l V E
oooooooooooooooooooooooooooooo ooooooooooooooooooooooooooooooOCDCD"*CMOCOCD**CMOCDCO 1^-CMOCDCO'tCMOCOCO*3-CMOCOCD^-CM
UJ UJz—' O—l O
CM UJ CO CE CD
UJ UJ UJ UJ UJ UJ UJ UJ
oCMCM
G LANDS BRANT:-
o o
O O CD
O O CD
O O O
ooCM
Oa o
CO
o oCD
OOoCM
O OCMCM
O O--a-Csl
o oCDCM
O O OD CM
O O Orn
o oCM CO
SILVER CENTURY EXPLORATIONSFIRSTBROOK PROJECT
FIRSTBROOK TWP., ONT _____N.T.S. 31 M/5_____
___COMPILATION of FLATTENED OBSERVED GRAVITY TJrjfAGNETICS A TOPOGRAPHYGRAVITY BASE LEVEL - .28 MGALS
T. F. MAGNETICS BASE LEVEL 57000 GAMMAS TOPOGRAPHY BASE LEVEL 280 METERS
400 400
METRES
BOO 1200
PLOTTED BYG.M.R.
SEPT. 1 995SCALE 1 :20000 PLATE 4
rot. no. 9542
bBOO W
1 650 W
O O Ol/)
OJ COo oto
OJ CD
tO
OJ
otO
OJen O oto
OJui o oen
OJ
o oto
OJ
o o
c-
oto
OJo oto
OJo o o
to to o oto
NJ CD Oo in
NI o oto
o oto
ooto o o
OJo o
o o
en o o
O)oo o o
CD OO
o o o
o oTO o o
iti o oen o o
CDo o
ciicjiai^uuiaitf^^^^^^^^^^^^uuwwt^b'wuucrfCiit^wwwbiwwtfJisiN •*J.*M-*-*VJUI-* i oiio*aaiaiai9C*ui-. .*tt.*aiei.*.-.aiuio^ui0-*.*uiMc*^l
5600 W Line D
1650 W Line C
Line BaiaataifliaeiaittaaaaitftfUt^vvcMuiaejttftfutJttf^^^tfw^^^^^^^^^^^^^A^^^^^^^^^^^^^^^^^^^^ucrf^^^^^^^.^^^^^^^^^ut^^^c^
FIRSTBROOK PROJECTFIRSTBROOK TWP., ONT.
N.T.S. 31 M/5—^TOTAL FIELD MAGNETIC PROFILES
PROFILE SCALE : l cm rep. 100 nTPOSTTVE WESTWARDS
BASE LEVEL : 57 500 nT
SURVEYED BY JVX LTD. USINGSCINTREX IGS-2/MP-4 MAGNETOMETER
SUMMER 1995
100 100 200 300
METRES
PLOTTED BYA.S.
AUG. 1995SCALE 1:5000 PLATE l
1 6883
l31MOSNWD036 2.16883 FIRSTBROOK 230
o o oto
OJ (Oo oto
OJ COo oin
oo
OJ O)o o
OJeno o
OJ
o o
OJ OJo oto
too oen
OJ
o oCO
OJo o oto
to COo oto
S3 COo oto
M
oto
NJ O)o oto
to en o oto
to
o oto
MOJo oto
NI o oto
o oo o oto
COo oto
co o oto
Oto
O)o oto
en o oto to
OJo oto
ooto
o oto
oooto
COo oto
COo oto
o oto
O)o oto
en o oto
8to
OJo oto
M Oo to
o o o oN3 O O
OJ Oo o o
en o o g
co o o
COo o 8o o o
Oloo
on O O
O!o
en co
en co8
en -g o o
enO)
en en
eno o
enOJo o
en NI
tn en -f -^CO COo oo o
O) en o oOJo o
N) O O
oo
i i i i i i i i i i i i i i i i i i i i i i i M i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i
Line A
(--•-IIIIIIIIIIIIIIIII-MM™-;S;J;I--Ea o "go'228S22SS2o'0 -'- KJ ••• ut-.-.-.-.-.-.-...-.-.-.-. -.-.-.-.-.-.i--. -.-.-.-.-..•...•..-.-...-.-.-.-.-•-•-•-•-..01014 L.(4Mtuftjio*oio MioNMKiKjfoMioisiKiCriCrfC^u^foioKatout^b.b.o.biobioub' ut^bic^ c^trfuitrfuu cribritrfbjub'.*.*-.*.*.*.*.*.*.*.*.*.* ^^A^ ^^A^^^^A^ ^-^^^^^^^oiuiaicjiciiuiuaicfi(iiuuiuiuiui(iiciiuciic*uivcjiataiaiaivaiciic)iuiuivuiatuiaiuiaiai9*99 aivauitfuivvvuiuitf vvaatfavaiaiAffvvwwvaiuivvvu'288 = 333^2382 SSSSSSbS S4fit4;Sg2282 3vSfit2 82232 82K 3232338.5 SCSSS2 82^2 8 = 82382288288838882 SS S±*S 822S23 2S8S S8 SSS8±33S3Si:2 2SBS SfeSSSSlIs 223 SS SSS2S 0Sc;2!3SSSgSoSSS2StS 8S 232322 2 S5S22SSg35S3 SSS S 22SS28822S23 883^5288 = 1588228282328 t iiii-iiliiiiKS^nsawiiii^iiii^iaaiaHKsisHsissHaEiissii
w en 01 o co co o o o ooo
enoo
O)oo
en g
tno o
OJo otoo o o o
eno o o
CO CDo oo o SoO!o o
en j*,o oo o o o
o o ooo o o
OJ COo o
OJco o o
OJ
o o
OJw o o
OJen o o oo
OJo o
OJ NI Oo
OJ
o o
OJCOo o
COoo
N)
Oo
N" O)
N)en o o o o
OJo o
NJoooo
o ooCOo o
COo o
-sio o
w o o
en o o ooOJo o
o o
o oo o o
COo o
COo o oo
o oen o o oo
OJ
8S3Oo
o oo o
N! Oo
J)-. o o
en o o
O)o o
CDo o
COo o o o
Nl o om
o oo o
tn o orn
o ooo
COoo
COoo
Oo o
N)
O O
M N)Ni WO OO O
K) to•f. eno oo om rn
CDo o
to vj o om
to toCO COo oo om n
OJ OJ OJ-" N)O Oo om rn
533 N
430 N
233 N
33O N
S33 N
533 N
433 N
il o -J O
L ~ ! n c;s J o D
533 5
833 5
1333 S
1203 S
1433 5
1533 S
1333 S
2333 S
2230 S
24.33 5
2533 S
2933 S
5333 S
3233 5
3433 5
3533 S
3B33 S
4333 S
250
o o.o o o ' o
CM oCM CM CM
Line D
GRAVlTr \PFCFiLt mm
mmm
500
1500 N
1400 N
1200 N
1003 N
SOO N
500 N
400 N
200 Ni
200 o
400 S
500 5
800 5
1000 5
1200 S
1400 S
1500 5
1800 S
2000 S
2200 5
2400 S
2500 S
2800 S
3000 S
3200 S
3400 S
3600 S
3800 S
4000 5
O Thickness of gravitational source
Thickness of Magnetic source
Regional Faults
Gravity Anomaly (-ve)
MAGNETIC PROFILES ——Solid Lines* West/North Base Level 57.000 nT
GRAVITY PROFILES Dashed Lines ± West/NorthBase Level-28 mgals
31M05NWD036 2.16BB3 FIRSTBROOK
B-1 6883
240
0^
LTIen o02:
^3^^333^^3:3^3^^3:3333:oooooooaoooooooooooo oaooDOoaooocDooooooaaOCQLD'irCMaCDLO-fl-CslOCDa3^rC\IOCOLD-C-C\JuDLnLDLnLnLn^'3--'?--q-'3-tT)rniT5nr7fncsJCNicxsic\j
*
l 1 / o S S 0
rv CM— O en on o2:
uJ z ^
3:333:3ic —i LJLuuiuJuJLjuJLJUJuJLjLij 1 HO/V^,' - ~i\iw-7 r-M., -— * 3:333:ijjLLjujuj 1 — v-^\!\n ONlMliAi oooooo uj ooooooaaooocj 1
- OOOOOOOOOOtOOOOCDOOOOOOOOOOOO 1 . . 1 • 1 OCDU3''3-CS10C30a02:OOOOOCM 1'3-CI3CDOCM'^-CDQDOCsJ l yr,^; C '' ^ ' 1 jCNJ^.^,^.,^, — cocc-^-CviCDCsi-^-taoo — — — — '-rsJCMCsJCsjCvjnom i ^^-. .'.^Iv |
LQlA^D^j
SILVER CENTURY EXPLORATIONSFIRSTBROOK PROJECT
FIRSTBROOK TVTP., ONT. N.T.S. 31 M/5
MAGNETIC/GRAVITY MODEL COMPILATION MAPPROFILE SCALES: 250 nT/cm. 2 mgals/cm
POSITIVE "WESTWARD AND NORTHWARDMAGNETICS BASE LEVEL : 57 000 nT. GRAVTTY BASE LEVEL : -28 meals
SURVEYED BY JVX LTD. USING IGS-2/MP4 MAGNETOMETER, LACOSTE RHOMBERG GRAVIMETER
SUMMER 1995
400 0 400 BOO 1300
METRES
PLOGJ?.R BY SCALE 1:30000 PLATE 3SEPT. 1995
JVX re*, no. 9M2
UJ
LU LU Ld LU UJ UJ
CD O O CO
O O CD LO
O O Csl LO
O O 00
O O
o o o
a o CDCO
o o csiCO
o oCO(\J
o oOJ
o o oC\l
o oCD
a oCNl
o oCO
o o
LU COa:CO
LJ LU
a o-si- o
CO
o oC\J
o aCD
a o o(NJ
o oOJ
CDoCO OJ
o oCsJ CO
1600 HLine C Line B
Line D
BflSE LINE o Line A
4000 S
1600 N
1200 N
800 NN
400 N
BflSE LINE
400 S
800 S
1200 S
1600 S
2000 S
2400 S
2800 S
3200 S
3500 S
4000 S
8NfW ^ ipqg
: , MINING LANDS i
o 10CM
UJa o oCD
llJ
a oCsJ
SILVER CENTURY EXPLORATIONS
LU CO Cd DO
FIRSTBROOK PROJECTFIRSTBROOK TWP., ONT.
_____N.T.S. 31 M/5
OBSERVED GRAVITY PROFILESPROFILE SCALE : l 0111=0.5
POSITINE WESTWARD BASE LEVEL : -28 mgal.s
SURVEYED BY JVX LTD. USINGLACOSTE RHOMBERG MO "D" GRAVIMETER
SUMMER 1995
o 500 iUUU l 500
METRESPLOTTED BY
G.M.R SEPT. 1995
SCALE 1:25,000 PLATE 2
JVX rel. no. 9542
Recommended