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32D05SW9404 2.15226 BISLEY 010
A LOGISTICAL AND INTERPRETIVE REPOHT ON LINE-CUTTING, MAGNETIC, AND IP/HESISTTVITY ON THE BLAKE RIVER RECONNAISSANCE PROJECT, O-BLOCK PROPERTY, BISLEY TWP. KIRKLAND LAKE AREA, NORTHEASTERN, ONTARIO
On behalf of:
Sudbury Contact Mines Ltd. 2302, 401 Bay Street P.O. Box 102 Toronto, Ontario M5H 2Y4
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W.A. Hubacheck Consultants Ltd. 141 Adelaide St. West Suite 603 Toronto, Ontario M5H 3L5
Attention: Mr. David W. Christie Attention: Mr. Peter Hubacheck Tel: (416) 364-2895 Fax: (416) 364-5384
By:
JVX Limited60 West Wilmot St, Unit #22 Richmond Hill, Ontario L4B 1M6
Contact: Slaine Webster Telephone: (416) 731-0972 Pax: (416) 731-9312
JVX Ref: 9231 December 1992
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1. INTRODUCTION
2. SURVEY LOCATION
3. SURVEY GRID AND COVERAGE
4. PERSONNEL
5. SURVEY METHODS AND FIELD PROCEDURES
5.1 Magnetic5.2 Gradient IP/Resistivity
5.2.1 Survey Methods5.2.2 Field Procedures
6. GEOPHYSICAL INSTRUMENTATION
6.1 Magnetometer System 6.2 IP Receiver6.3 IP Transmitter6.4 Data Processing System
7. DATA PROCESSING AND PRESENTATION
7.1 Magnetic7.2 IP/Resistivity
8. DISCUSSION OF RESULTS AND RECOMMENDATIONS
8.1 Introduction8.2 Interpreted Magnetic and Resistivity Targets
9. SUMMARY AND CONCLUSIONS
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Figure 1: Location Map, scale 1:160,000
Figure 2: Claim Map
Figure 3: Gradient Array
Figure 4: IPR-11 Transient Windows
TABLES
Table la: O-Block, Bisley Twp., Magnetic Production Summary
Table lb: O-Block, Bisley Twp., Gradient IP/Resistivity Production Summary
APPENDICES
Appendix A: Instrument Specification Sheets
Appendix B: Gradient Array Fixed Current Electrode Positions.
Appendix C: Plates (maps)
O-Block, Bisley Twp. Geophysical Plates
Plate O-l: Total Field Magnetic Contours O-Block, Bisley Twp, Scale 1:2500.
Plate O-2: Profiles/Posted Values Total Total Field Magnetic Survey, O-Block, Bisley Twp. Scale 1:2500.
Plate 0-3: Apparent Resistivity Contours O-Block, Bisley Twp. Scale 1:2500.
Plate O-4: Profile/Posted Values IP/Res. O-Block, Bisley Twp. Scale 1:2500.
Plate O-5: Compilation MapO-Block, Bisley Twp. Scale 1:2500.
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AM INTERPRETIVE AND LOGISTICAL REPORT ONLINE-CUTTING, MAGNETIC,
AND GRADIENT IP/RESISTIVITY ON THEBLAKE RIVER RECONNAISSANCE PROJECT,
O-BLOCK PROPERTY, BISLEY TWP., KIRKLAND LAKE,NORTHEASTERN ONTARIO
On behalf of
SUDBURY CONTACT MINES LTD.
1. INTRODUCTION
From October 7th to December 15th, 1992, Line-cutting, Magnetic and IP/Resistivity surveys were carried out by JVX Limited on behalf of Sudbury Contact Mines Ltd. (2302, 401 Bay Street, P.O. Box 102, Toronto, Ontario, M5H 2Y4) care of W.A. Hubacheck Consultants Ltd. (141 Adelaide St. West, Suite 603, Toronto, Ontario, M5H 3L5) on the Blake River Reconnaissance project, 0-Block Property, Bisley Twp., Kirkland Lake area, NE Ontario.
JVX provided line-cutters, geophysical technicians, geophysical instrumentation, computer hardware and software, and all necessary accessories required to carry out the surveys in a professional manner. Approximately 21.5 line-kilometres of total field magnetometer, and 19.5 line-kilometres of gradient IP/Resistivity coverage was achieved with readings taken at 6.25, 12.5 and 25-meter station intervals.
Contour and profile idealized grid maps of the edited data were produced by JVX. Geophysical compilation and a base map of topographic features such as streams, lakes and swamps is also included.
2. SURVEY LOCATION
The grids are located north of Kirkland Lake, Ontario north of Hwy #66. Figure l shows the location of the survey areas with respect to nearby population centers at a scale of 1:160,000.
3. SURVEY GRID AND COVERAGE
The grid coverage on O-Block is approximately 21.5 line-kilometres. The geophysical survey coverage is detailed in the following tables.
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Survey by JVX Ltd.
LOCATION MAP
SUDBURY CONTACT MINES LTD.
BLAKE RIVER RECONNAISSANCE PROJECTBisley d Melba Twpi. properties, Northern Ontario
GROUND GEOPHYSICAL SURVEY Scale : 1 : 160,000 (approx.) Figure 1
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TOTAL FIELD MAGNETIC PRODUCTION SUMMARY
O-Block, Bisley Twp. 6.25 A. 12.5-meter stations
Line Prom To Length
Total : 21537.50
Readings
1000S900SBOOS750S700S650S600S550S500S400S300S200S100S
SOS0
SON100N150N200NSOON400NSOON550N600N650N700NSOON
BL 00TL 800E
225E212E
00000000
500W525W700W700W700W200W193W200W206W187W175W156W156W150W150W150W150W
SOON500S
800E800E800E800E800E800E800E800E800E800E800E400E400E400E400B400E400E400E400E387E600E631E625E650E625E631E625E
750S1000S
575.00587.50800.00800.00800.00800.00800.00800.00800.00800.00
1300.00925.00
1100.001100.001100.00
600.00593.75600.00606.25575.00775.00787.50781.25800.00775.00781.25775.00
1550.00500.00
4748
12912912912994
112129
65105
75177177177
748897984779
12712612912512663
12541
3067
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•l VX4. PERSONNEL
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Mr. Fred Moher - Geophysical Technician A Crew Chief. Mr. Moher supervised and assisted with cutting and chaining survey lines and operated the Scintrex IGS-2/MP-4 magnetometer. He also operated the Scintrex IPR-11 receivers and TSQ-3 transmitter. He was responsible for data quality and the day to day operation and direction of the surveys.
Mr. Steve Bortnick - Geophysical Technician. Mr. Bortnick operated the Scintrex IGS-2/MP-4 magnetometer. He also operated the Scintrex IPR-11 receivers and TSQ-3 transmitter.
Two Geophysical Technicians assisted with cutting and chaining survey lines and assisted with the IP/Resistivity survey.
Mr. Blaine Webster - Geophysicist. Mr. Webster provided overall supervision of the survey, interpreted the data and coauthored the report.
Mr. Albert Vickers - Geophysicist. Mr. Vickers compiled the data, plotted the maps, interpreted the geophysical data and coauthored the report.
5. SUHVKY METHODS AND FIELD PROCEDURES
5.1 Magnetic
The magnetic method consists of measuring the magnetic field of the earth as influenced by rock formations having different magnetic properties and configurations. The measured field is the vector sum of primary, induced and remnant magnetic effects. Thus, there are three factors, excluding geometric factors which determine the magnetic field. These are the strength of the earth's magnetic field, the magnetic susceptibilities of the rocks present and their remnant magnetism.
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. The primary geomagnetic field is, for the purposes of normal mineral exploration surveys, constant in space and time. Magnetic field measurements may, however, vary considerably due to short term external magnetic influences. The magnitude of these variations is unpredictable. In the case of sudden magnetic storms, it may reach several hundred nT over a few minutes. It may be necessary therefore, to take continuous readings of the geomagnetic field with a base station magnetometer while the magnetic survey is done.
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is given by:
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I is the intensity of magnetisationk is the volume magnetic susceptibilityH is the magnetic field field intensity
The susceptibilities of rocks are determined primarily by their magnetite content since it is strongly magnetic and widely distributed. The remnant 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 remnant magnetization may bear no relation to the present direction and intensity of the earth's field. The remnant magnetization is related to the direction of the earth's field at the time the rocks were last magnetized. Interpretation of most magnetometer surveys is normally done by assuming no remnant magnetic component.
Since the distribution of magnetic minerals (magnetite, pyrrhotite) will, in general, vary with different rock types, the magnetic method is often used to aid in geologic mapping. The magnetic survey is of particular importance because it may map areas of structural complexity, carbonatization, and silicification.
5.2 IP/Resistivity
5.2.1 Survey Method
The phenomenon of the IP effect, which in the time domain can be likened to the voltage relaxation effect of a discharging capacitor, is caused by electrical polarization at the rock or soil interstitial fluid boundary with metallic or clay particles lying within pore spaces. The polarization occurs when a voltage is applied across these boundaries. It can be measured quantitatively by applying a time varying sinusoidal wave (as in the frequency domain measurement) or alternately by an interrupted square wave (as in the time domain measurement).
In the time domain the IP effect is manifested by an exponential type increase or decrease in voltage with time. The frequency domain measures either the difference in voltage as a function of frequency (maintaining constant current) or the real and quadrature components of the voltage compared to the transmitted current.
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Both methods measure essentially the same phenomenon and theoretically the response of one can be translated to the other domain by Fourier analysis. The two methods are qualitatively comparable if only a change in relative response amplitude is required, i.e. an anomaly in the time domain will have a similar anomaly in the frequency domain provided the noise levels and resolution of the measuring devices are the same.
The direct current apparent resistivity is a measure of the bulk electrical resistivity of the subsurface. Electricity flows in the ground primarily through the groundwater present in rocks either lying within fractures or pore spaces or both. Silicates which form the bulk of the rock forming minerals are very poor conductors of electricity. Minerals that are good conductors are the sulphide minerals, some oxides and graphite where the electrical flow is by electronic means rather than ionic.
The two methods of measuring the IP effect employ the same geometries of electrodes. The measurement is made by applying a current across the ground using the ground using two electrodes (current dipole). The potential field (voltage) and IP effect can then be mapped in an area around the current source using what is essentially a very sensitive voltmeter and a second electrode pair (potential dipole). The former parameter, when normalized for the amount of current flowing in the ground, reflects the bulk apparent electrical resistivity of the subsurface. The latter parameter, as previously mentioned, says something of the polarizability of the ground which is due to the content of metallic or clay minerals.
Disseminated mineralization does not occur in sufficient quantities to effect either the bulk polarizability or resistivity of the ground. The resistivity data is useful in mapping lithologic units and geologic structures such as faults, shear zones and pipes. For gold exploration it is particularly useful to delineate zones of silicification which is often associated with gold mineralization.
Historically the time domain IP response was simply a measure of the amplitude of the decay curve, usually integrated over a given period of time. Over the last decade, advances in technology have made it possible to measure the decay curve at a number of points, thus allowing the reconstruction of the shape of the curve. By measuring the complete decay curve in the time domain, the spectral characteristics of the IP response may be derived. The gradient IP array does not give an IP response suitable for an accurate spectral fit. In such cases spectral data is used as a check on data quality.
Recent studies have shown there is a relationship between the decay form and the texture or grain size of the polarizable minerals, i.e. the IP response is not only a function of the amount or type of the polarizable material. This could be important when it comes to ranking anomalies of equal amplitude or discriminating between economic and non-economic sources. The parameters that describe all the properties of the IP response are the spectral parameters m, c, and tau.
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The spectral data has proved useful in differentiating between fine-grained and coarse-grained sulphides or graphite. Gold is often found associated with sulphides that are fine grained. Experience has shown the M-IP parameter (derived m) is helpful in ranking anomalies in areas of high resistivity, where the apparent chargeability is increased systematicly. Also in areas of low conductivity, the parameter has proved advantageous in delineating lithology and determining which anomalies have sulphide sources.
As the source discrimination capability of the IP measurement (either time or frequency domain) remains somewhat unclear, we might recommend that in areas with geologic control, the IP decay forms be studied for significant and systematic differences. If such differences appear (at a particular receive time), such may be applied elsewhere in the same geologic environment. Our experience has shown time constants (tau) are important interpretation aids in areas of moderate to high resistivities which occur with pyrite in zones of silicification.
5.2.2 Field Procedures
The IP/resistivity survey on the Q-Block Bisley Twp. property employed the time domain method with a gradient array. The geometry of the gradient array is illustrated in the figure below.
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The electrodes marked CI and C2 comprise the fixed current electrodes. Those marked by a PI and P2 are the potential electrodes and are moved between the current electrodes on a grid within the following constraints:
x/L remains less than 0.3 d/L remains less than 0.3 a/L remains less than 0.05
The line joining the two potential electrodes must remain parallel to the line joining the current electrodes. A separate and adjoining fixed current electrode setup is needed if gradient IP/resistivity measurments are to be read outside the current x/L or d/L constraints. The gradient array survey employed a 50m potential electrode separation and current electrode separation that was determined for each grid. The positions for the fixed current electrode separation are listed in Appendix B.
The waveform of the transmitted current is a two second on-off alternating square wave. The IPR-11 measures the voltage (primary voltage) across each potential dipole at an appropriate time after the current begins its on cycle, which approximates a D.C. measurement of voltage, in order to determine the apparent resistivity of the ground.
The equation for the apparent resistivity is given by
/Si r L'k/48 * V/I
where k r 2^{(1-D)AZ2*(1-D)8 fa + {(HD)AZ2 *(HD)2 )8xsj
and Z r 2X/L and D = Zd/L
For any array, the value of resistivity is a true value of subsurface resistivity only if the earth is homogeneous and isotropic. In nature, this is very seldom the case, and apparent resistivity is a qualitative result used to locate relative changes in subsurface resistivity only.
The IPR-11 will also measure the secondary or transient relaxation voltage during the two second off cycle of the current, which is a measure of the polarizability of the ground. Employing the two second cycle time, ten slices of the decay curve will be measured at semi-logarithmically spaced intervals starting at 45 milliseconds after current turn-off up to 1590 milliseconds after turn-off. The measured transient voltage when normalized for the width of the slice and the amplitude of the primary voltage yields a measure of the polarizability called chargeability in units of millivolts/volt.
Chargeability (M) as measured by the IPR-11, is averaged over several periods of the transmitted waveform and normalized for:
1. the length of the integration interval;2. the steady state voltage and3. the number of pulses.
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M r chargeability (mV/V)Vs z secondary voltageVp r primary steady state voltagetr - integration interval (tz-ti)ti r time at beginning of integrationi z - time at end of integration
By adjusting 11 and t z the chargeability is sampled at different points of the decay. Figure 4 illustrates the decay waveform and the 10 slices of integration.
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Decay Waveform - Figure 4
For a 2 second transmit and receive time the slices of integration are as follows:
SLICEMOMlM2M3M4M5M6M7M8M9
Traditionally slice M7 is chosen to represent chargeability.
RATIO!msec30303030180180180360360360
* FROMmsec306090120150330510690
10501410
TOmsec6090
120150330510690105014101770
MIDPOINTmsec4575105135240420600870
12301590
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The spectral parameters M-IP, tau and "c" may be derived from the IPR-11 data with the Soft ][ software. Johnson (1984) summarizes the spectral parameters as follows:
M-IP: The chargeability (M-IP) is the relative residual voltage which would be seen immediately after shut-off of an infinitely long transmitted pulse (Seigel, 1959). M-IP is the numerically derived equivalent to Seigel's "m" or theoretical chargeability. It is related to the traditional chargeability, which is measured at discrete time intervals after the shut-off of a series of pulses of finite duration.
tau: The time constant (tau) and exponent (c) are those newly measurable physical properties which describe the shape of the decay curve in time domain or the phase spectrum in frequency domain. For conventional IP targets, the time constant has been shown to range from approximately .01 seconds to greater than 100 seconds and is thought of as a measure of grain size. Fine grained mineralization loses charge quickly, coarse grained mineralization holds charge longer.
c: The exponent (c) has been shown to have a range of interest from 0.1 to 0.5 or greater and is diagnostic of the uniformity of the grain size (0.5 single grain size - 0.1 - many grain sizes).
The spectral fit for gradient array data does not give M-IP and tau values that can aid with the interpretation as mention above. As a result of this they were not plotted, but served as a data quality check. The spectral parameters, c, and the remaining slices of decay curve information (MO to M6, M8, and M9) were collected and monitored to check the integrity of the data.
6. GEOPHYSICAL INSTRUMENTATION
JVX supplied the following geophysical instruments and accessories.
6.1 Magnetometer
One Scintrex IGS-2 system which included a Proton Precession Magnetometer, plus an MP-4 base station for automatic diurnal corrections.
The Scintrex IGS-2/MP-4 proton precession magnetometer system was used to take readings of the total magnetic field over the grid. An additional Scintrex IGS-2/MP-3 magnetometer is used as a base station magnetometer. Both units are microprocessor controlled and recorded readings with clock time on internal memory. The survey data from the field unit is corrected for ambient field changes at the end of every survey day by connecting field and base station magnetometers.
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6.2 IP Receiver
The Scintrex IPR-11 time domain Microprocessor-based receiver was employed. This unit operates on a square wave primary voltage and samples the decay curve at ten time gates or slices. The instrument continuously averages primary voltages and chargeability until convergence takes place and the averaging process is stopped. Accepted data is stores internally on solid-state memory.
6.3 IP Transmitter
The survey employed the Scintrex TSQ-3/3.0 kw Time Domain Transmitter powered by an Bhp motor generator. The TSQ-3 is designed for a selectable square wave output of 2, 4 or 8 seconds 'on' time. The in-field current output was accurately monitored with a digital multimeter placed in series to the current loop.
6.4 Data Processing System
a) An IBM-compatible portable microcomputer.b) Processing software including communications and plotting programs.c) An Epson dot matrix printer and tractor feed paper.d) Consumable items such as girded paper, pens and floppy disks.
The instrumentation is described in greater detail in the specification sheets appended to this report.
7. DATA PROCESSING AND PRESENTATION
7.1 Magnetic
To allow for the computer processing of the data, the raw data stored internally in the data loggers of each survey instrumentation ( IGS-2/MP-4 for the mag units ) were transferred at the end of each survey day to floppy diskette by the in-field microcomputer and appropriate communications software.
An archived edited data file was created in the field from the raw data file by the operator removing repeat or unacceptable readings and correcting any errors such as station or line numbers. The concisely labelled and edited data were then output to a field printer as line profiles and contours.
In the JVX office the profiles, with posted values of the merged total field magnetic data, and contours of the total filed magnetic data were re-plotted in ink on paper at a scale of 1:2500 employing a Nicolet Zeta drum plotter and an IBM PC/AT. Final report quality prints of the data at scale 1:2500 drafted on mylar employing Geopak software and Acad are supplied.
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7.2 IP/Resiativity Data Processing
The IP survey data were archived, processed and plotted by an Corona PC-400 microcomputer using an Epson FX-80 dot matrix printer. The system was configured to run the Scintrex Soft ][ software package, a suite of programs that was written specifically to interface with the IPR-11 IP receiver and to calculate the spectral parameters. At the conclusion of each day's data collection, data resident in the receiver's memory was transferred, via serial communication link, to the computer - thereby facilitating editing, processing and presentation operations. All data was archived on floppy disk. In the Toronto office data was ink-plotted as profiles, contours, and filtered contours on a Nicolet Zeta drum plotter interfaced to an IBM PC/XT microcomputer.
To allow for the computer processing of the IP data, the raw data stored internally in the IPR-11 was transferred at the end of a survey day to floppy diskette by the in-field microcomputer and the Soft ][ communications software. The raw data was filed on diskette in ASCII character format using an IBM compatible (MSDOS) microcomputer. Once the data was stored on diskette, a number of processing techniques were employed.
An archived edited binary format data file was created in the field from the raw data file by the operator removing repeat or unacceptable readings and correcting any header errors such as station or line numbers. The concisely labelled and edited data was then dumped to a printer under the heading Data Summary.
At the end of each survey day the spectral parameters M-IP, c, and tau were computed employing the Scintrex Soft ][ software package. This program compares the raw transient decay curve with a library of curves calculated from known parameters and by least squares fitting selects a best matching curve. A listing of the spectral parameters and a measure of fit with appropriate station and line labels (Spectral Analysis Summary) were then generated on a printer.
The M7 slice/apparent resistivity gradient array data was profiled and contoured in-field. The gradient array plotting y-position is taken as the mid-point of the two potential electrodes.
In the JVX office the profiles and contours of resistivity/M? were re-plotted in ink on paper at a scale of 1:2500 (a:50m) employing a Nicolet Zeta drum plotter and an IBM PC/AT. Final report quality profiles and contours of the data at scale 1:2500 drafted on mylar employing Geopak software and Acad are supplied.
The maps are presented in Appendix C:
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8. DISCUSSION OF RESULTS AND RECOMMENDATIONS
8.1 Introduction
The Blake River Reconnaissance project on the 0-Block Bisley Twp. grid is located in the Kirkland Lake area. The 0-Block Bisley Twp. grid was surveyed to delineate three ground magnetic features observed from an airborne survey. The lines were cut 100m apart with 50m line spacing detailing the three airborne magnetic anomalies of interest. Gradient resistivity was surveyed in conjunction with magnetics, to take advantage of low chargeability and associated low resistivity data that respond to the lithologic units and geologic structures such as faults, shear zones and pipes. The 1992 ground magnetic and gradient IP/resistivity surveys further define the three main areas of interest and prioritize them for drill targets.
The prioritized target areas are based on magnetic highs, resistivity lows and the association of the magnetic responses with the IP/resistivity data. The suggested drill targets are within the three detailed areas of investigation, defined and labeled from south to north as Ml, M2, M3, M4, and M5. The magnetic and resistivity anomalies are associated with interpreted cross structures CS-1 i 2, 3 6 4 striking NE and CS-5, 4 6 striking SE. The ground survey further defines these anomalies with a parameter of magnetic highs Mla, Mlb,... M3a, M3b, etc. that are prioritized as recommended investigation targets based on their association with interpreted cross structures, resistivity lows, inflections of resistivity high/low trends and magnetic trends. Resistivity lows that do not correlate with magnetic highs are also considered to be priority targets. The individual anomalies are prioritized as drill targets and are discussed in the following section.
The recommended drill targets are positioned over the magnetic highs within a defined and labeled target area. The target areas are defined by magnetic highs and/or resistivity lows and are priortized based on the magnetic/resistivity/chargeability association. The relationship of magnetic highs with faults, dykes, and other cross structures may be favorable for kimberlites. There is evidence of other cross structures and linear resistivity trends that could be better recognized with more closely spaced geophysical lines. Caution should be given to the chargeability highs, as sulphides can be responsible for resistivity lows and magnetic highs. The exploration targets should be further prioritize with any available geological/geochemical data in conjuction with the included profiled geophysical maps.
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vx8.2 Interpreted Magnetic and Resistivity Targets
Magnetic Anomaly Ml ( Linear Trend, Striking NNE )
As indicated on the compilation map, Ml is a 250 nT linear shaped very strong magnetic high striking NNW from the south east corner of the grid to M3 at L200S/300E. Further continuation, of the NNW extension of Ml, is not as clearly defined within M3, but the magnetic and resistivity 7 chargeability trends within MS fall along strike and can therefore be assumed to be part of Ml.
The compilation map displays two magnetic anomalies, Mla and Ml b, which are associated with the thickening of the magnetic dyke Ml. These magnetic anomalies were observed as one large airborne anomaly that was delineated with 50m spaced detailed ground geophysical lines (L800S to L500S). The IP/resistivity surveys respond to the resistivity contrast between the lithologies and this further delineates the magnetic anomalies for exploration targets.
Mla/RLa is a 40 nT, half circular strong magnetic high ( resistivity low on the SW side of Ml. Mla is approximately 100m in diameter centered at L600S/575E. The length and width of the magnetic anomaly indicates the anomaly extends to depth. Mla/RLla is on the SW side, of the magnetic dyke, at the intersection of interpreted cross structures CS-1 and CS-5. Such intersections may be favorable for kimberlites. Kimberlites are also believed to be resistivity lows in contrast with the surrounding host rock units and the resistivity low RL1 extends into Mla and is labeled RLla on the compilation map.
TARGET T-la ( L600S l 506E ) High Priority l
Target T-la is the highest priority target, due to its medium/strong magnetic response (48 nT) The location of T-la is based on the magnetic high that is the maximum distance with minimum magnetic influence from Ml. Target T-la is also centered over resistivity low RL1 and is associated with interpreted cross structures CS-1 4. CS-5.
TARGET T-1 b ( L550S f 494E ) High Priority 2
Target T-1 b is high priority target number 2. T-lb is a medium/strong magnetic response (33 nT) interpreted to be independent of Ml. Target T-lb is 50m north of the center of resistivity low RL1 and associated with interpreted cross structures CS-1 A 5.
TARGET T-le ( L550S f 556E ) Medium Priority
Target T-le is a medium priority target with a strong magnetic response (86 nT). T-lc would determine if the possible kimberlite of Mla/RLla extends west into Ml. Target T-lc is also on the NE edge of RHla and is associated with interpreted cross structures CS-1 4 CS-5.
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vxMlb is a medium/strong magnetic high on the NE side of the NNW striking magnetic dyke Ml. It is on the NE inflection of resistivity high trend RH1 and interpreted cross structure CS-5. The relationship of a magnetic high along magnetic dykes, cross structures and flanking a resistivity high trend may be favorable for kimberlites.
TARGET T-1 d ( L700S / 725E ) Low Priority
Target T-ld is a 8 nT medium/strong magnetic high within Mlb and independent of Ml. The chargeability increases above 5 mV/V on all lines east of Ml, suggesting either very strong changes in soil conductivity or the presents of sulphides. Mlb and target T-ld are associated with intersection of the interpreted cross structures CS-1 and CS-5 and is on the west flank of resistivity trend RH1. The relationship of a magnetic highs with cross structures and flanking resistivity highs may be favorable for kimberlites.
Anomaly RL1 l TARGET T-le ( L750S l 400B ) Low Priority
RL1 l T-le is prioritized as a target to investigate the resistivity and magnetic low RL1. RL1 outlines a resistivity / magnetic low that may represent a distinctive lithological unit. Kimberlites are also believed to be resistivity lows in contrast with the surrounding host rock units. This interpreted unit is bound to the SE by resistivity high RH1 and to the NW by RH2 and RH4- The interpreted cross structure CS-1 is on strike with the SE resistivity high / low contact and it could be concluded that this cross structures represent a lithological contact. Further detailed continuation of the grid would verify the limits of RL1.
Anomaly M2 l TABGBT T-2 { L500S l 56E ) Medium Priority
M2 l T-2 is a strong 93 nT magnetic high on the inflection of RH1 and associated with interpreted cross structures CS-2 ft CS-3. The anomaly is approximately 75m long with possible continuation SSE along the RH2/RL1 contact, as indicated on the compilation map. The magnetic response may be due to the relative chargeability high (greater than SmV/V) on lines L500S and L700S east of the anomaly, as sulphides can be responsible for resistivity lows and magnetic highs. Continuation of the magnetic survey over the beaver pond would determine the SSW extent of the anomaly. Detailed continuation of the grid to the NW would determine if M2 is part of M3c and/or define it as a second NNW striking linear magnetic feature.
Target T-2 is prioritized as a target over a strong magnetic high (possible magnetic trend) adjacent to a resistivity low, and is associated with the intersection of resistivity trend RH1 and interpreted cross structure CS-2. T-2 may be associated with the possible second NNW striking magnetic dyke, as indicated on the compilation map. Kimberlites may be favorable at such intersections and a detailed grid extension could determine these cross structures and magnetic trends more accurately. The priority of this
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target may be changed due to the relative chargeability high (greater than SrnV/V) on lines L500S and L700S east of the anomaly.
Within the southern detailed area, from lines L800S to L500S, a number of small contoured magnetic highs in association with the IP/resistivity data, should be further investigated with additional geological/geochemical information and profiled geophsical data.
Magnetic Anomaly M3 ( Large Magnetic High, Grid Center )
Anomaly M3 is a large medium/strong magnetic high intersected with interpreted cross structures CS-2, 3, 4, 5 and 6. M3 consists of the interpreted continuation of magnetic dykes Ml and M2 and a parameter of strong magnetic highs. The corresponding resistivity and chargeabilities are relatively low and constant, averaging 7000 ohm m and 2.5 mV/V respectively. The IP/resistivity and magnetic response both suggest a lithological feature.
The north/south extent of M3 and its corresponding IP/resistivity response is detailed between lines L100S and L200N. The interpreted southern contact of the lithological unit is between lines L200S and L100S and its north extent at line L300N, as indicated on the compilation map. The east/west continuation is not as clearly defined due to the limited east/west extent of the survey lines.
The 50m spaced detailed geophysical lines (L100S to L200N) has resloved the observed airborne anomaly M3 into several strong magnetic anomalies designated as M3a to M3g and the assumed NNE continuation of magnetic dykes Ml and M2. With a short description of each, the M3 anomalies indicated on the compilation map are:
- M3a and M3b, associated with the thickening of the magnetic dyke Ml and corresponding resistivity lows,
- M3c, d, and e, associated with interpreted crossstructure CS-2 and resistivity low RL3 and high RH4,
- M3f, associated with interpreted magnetic trend M2 and resistivity low RL4 and
- M3g is associated with RL5.
M3a and M3b are strong magnetic highs on the SW side of Ml. They are both near circular inform with approximate diameters of 75m each, suggesting depth extent i.e. kimberlite pipes. A weak resistivity low flanks the SW side of Ml and correspond to M3a and M3b. This resistivity lows do not have a significant contrast with the surrounding host rock unit and consequently the resistivity lows are not shown on the compilation map. Interpreted cross structure CS-3 intersects Ml between M3a and M3b. Kimberlites are believed to be magnetic highs/resistivity lows and may be favorable along magnetic linear trends intersected by cross structures.
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vxTARGET T-3a ( 87S f 150E ) High Priority l
Target T-3a is a high priority target, due to its strong magnetic response (75 nT, as read from contoured data) and maximum distance and minimum magnetic influence from Ml. Target T-3a is also on the inflection of a weak resistivity low and is associated with interpreted cross structures CS-3.
TARGET T-3b ( L50N l 56E ) High Priority 2
Target T-3b is high priority target number 2. T-3b is a strong magnetic response (90 nT) and its position is based on its maximum distance and minimum magnetic influence from interpreted magnetic dyke Ml. Target T-3b is on the inflection of a weak resistivity low and associated with interpreted cross structures CS-3.
M3c, M3d, and M3e are strong linear magnetic highs ( 85 nT, 50 nT and 58 nT respectively) within the medium/strong M3 anomaly. The NS linear shaped anomalies M3c, M3d, and M3e ( L300N/300B, LO/262E and L200S/237E respectively ) fall along a NS strike. Their short width (f. 12.5m) and NS linear strike suggest they are magnetic responses along interpreted cross structure CS-2. The chargeability and resistivity increases east of CS-2 and RH4 maps out the resistivity high above 8000 ohm m. RL3 is a resistivity low at the intersection of Ml, the south contact of M3 and interpreted cross structure CS-2.
M3c l RL3 l TARGET T-3c ( L200S l 275E ) Medium Priority
M3c l RL3 l T-3c is a strong 93 nT magnetic high on resistivity low RL3 at the intersections of Ml, the south contact of M3 and interpreted cross structure CS-2. Such intersections may be favorable locations for implacement of kimberlites. The intersection of lithological contact M3 and magnetic dyke Ml may be especially favorable. A detailed grid extension could determine the south position of the lithological contact of M3, and the dimension of RL3 more accurately. Target T-3c is centered over the near circular resistivity low RL3 where circular features and resistivity lows may be a kimberlite signature. Some caution should be given from the chargeability highs, to the south on lines L200S and L300S, as sulphides can be responsible for resistivity lows and magnetic highs.
Anomaly M3f l TARGET T-3d ( 180S l 194W ) Medium Priority
M3f is a strong magnetic high within M3. Its is on strike with the interpreted continuation of magnetic dyke M2. The near circular dimensions of M3f, with a 75m diameter, suggest the anomaly has depth i.e. kimberlite pipe. Target T-3d is positioned on the SW side of the interpreted magnetic dyke M2, on a magnetic high that is interpreted not to be influenced by M2, over the center of the interpreted kimberlite pipe.
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vxTarget T~3d is a high priority target, due to its strong magnetic response(88 nT, as read from contoured map) and maximum distance and minimum magneticinfluence from the interpreted continuation of M2. Target T-3d is also onthe inflection of resistivity low RL4 with no variation in thechargeability. T-3d is also associated with interpreted cross structuresCS-3 and CS-4. Detailed extension, of the grid, could delineate the anomalyand define its relationship to M2 with more certainty.
Anomaly M3 7 RL4 7 TARGET T-3e ( L300S l 262W ) Medium Priority
M3 l RL4 / Target T-3e is centered on resistivity low RL5 and a medium/strong 48 nT magnetic high and is associated with interpreted cross structure CS-4. Cross structures and coincident resistivity lows over magnetic highs are believed to be favorable sites for kimberlites. A detailed grid extension could determine if this magnetic l resistivity anomaly extends as background or if its extent is restricted to the dimensions of a circular anomaly i.e. kimberlites. The compilation map shows Target T-3e along a bush road where cultural anomalies may be present, therefore the magnetic data associated with T-3e should be evaluated for near surface interference.
M3g l RL5 consists of two strong 50 nT magnetic highs on resistivity low RL5, the south contact of M3 and interpreted cross structure CS-2. Previous work by JVX has determined that coincident resistivity lows over magnetic highs are believed to be the geophysical signatures over kimberlites. A detailed grid extension could determine if this magnetic 7 resistivity anomaly extends as background or if its extent is restricted to the dimensions of a circular anomaly i.e. kimberlites. No targets are recommended with the limited extent of the grid.
A number of small magnetic highs/resistivity lows, within M3, should be followed up with additional geological/geochemical information and the geophysical data.
Anomaly M4 7 RL7 ( Large Magnetic High, NW Quadrant )
Anomaly M4 l RL7 is a medium/strong magnetic high f resistivity low and intersected with interpreted cross structures CS-3, 4 and 6. The chargeability decreases westward approaching O mV/V on the edge of the survey lines. The chargeability, magnetic and resistivity responses of M4 l RL7 may be in response to a lithological unit. The 50m spaced detailed geophysical lines (L800N to L500N) resolves the observed airborne anomaly M4 into two strong magnetic anomalies, M4a and M4b. The coincident chargeability highs suggest that sulphides may be present. A detailed grid extension is recommended to determine if the magnetic l resistivity anomalies on west edge of O-grid extend as background or if their extent is restricted to the dimensions of a near circular anomaly i.e. kimberlites.
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Anomaly M4a l TARGET T-4a ( L650N l 56W ) Medium Priority
Target T-4a is a medium priority target, due to its strong magnetic response of 74 nT coinciding with resistivity low RL7. The chargeability response is negligible ( < l mV/V, ), indicating the absence of sulphides, and T-4a is associated with interpreted cross structures CS-2, 4 fc 6. Kimberlites may be favorable at such intersections and a detailed grid extension could determine the cross structures as well as the magnetic and resistivity anomalies more accurately.
M4b does not correlate with resistivity low RL7, but is part of a smaller resistivity low RL6. Magnetic anomaly M4b is of relatively short wavelength (approximately 25m diameter) suggesting limited depth extent. The chargeability decreases from 6 mV/V to less than 5 mV/V from east to west. A one station chargeability high (greater than SmV/V) over the anomaly may be the result of out-crop. Out-crop is noted on the compilation map and it is recommended that M4bXRL6 should be evaluated for near surface interference, as out-crop may effect the resistivity and magnetic responses.
TARGET T-4b ( L550N f 162E ) Medium Priority
Target T-4b is a medium priority target, due to its strong magnetic response of 74 nT correlating with resistivity low RL6. T-4b is on the inflection of a chargeability high with a one station high that can be regarded as noise due to outcrop. Target T-4b is associated with the intersection of interpreted cross structure CS-3 and possible magnetic/lithological contact M4. Kimberlites may be favorable at such intersections and a detailed grid extension could determine the cross structures as well as the magnetic and resistivity anomalies more accurately.
Anomaly MS l TARGET T-5 ( L800N l 506E ) Low Priority
MS consists of a medium/strong magnetic high intersected by interpreted cross structure CS-2. The detailed area directly south has a chargeability greater than 5 mV/V, but the chargeability and resistivity over M5a are below 5 mV/V and 5000 ohm m respectively indicating the absence sulphides. Previous work by JVX has determined that coincident resistivity lows over magnetic highs are believed to be the geophysical signatures over kimberlites.
Target T-5 is a 100 nt magnetic high on the edge of a resistivity low, but is recommended as a low priority target due to the limited extent of the grid. A detailed grid extension could determine if this magnetic f resistivity anomaly extends as background or if its extent is restricted to the dimensions of a circular anomaly i.e. kimberlites.
A number of small magnetic highs/resistivity lows, throughout O-Grid, may be further followed up with additional geological/geochemical information. Pole dipole induced polarization l resistivity surveyed across the recommended targets would provide additional depth information and locate the source more accurately.
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9. SUMMARY AND CONCLUSIONS
During October to December 1992, Line-cutting, Magnetic and Gradient IP/Resistivity surveys were carried out by JVX Limited on behalf of Sudbury Contact Mines Ltd. c/o W.A. Hubacheck Consultants Ltd. on the Blake River Reconnaissance Project, 0-Block Property, Bisley Twp.; Kirkland Lake area, NE Ontario.
The recommended targets are based on contoured and profiled magnetic highs, within target areas, in association with the IP/resistivity data. The highest priority targets are magnetic highs/resistivity lows on the SW sides of magnetic dykes Ml and M2 that are intersected by interpreted cross structures and resistivity trends. This relationship of magnetic highs/resistivity lows with faults, dykes, and other cross structures may be favorable for kimberlites. There is evidence of other cross structures and magnetic l resistivity target areas that warrant more detailed geophysical surveys. Some caution should be given to the chargeability highs on the east and north parts of the grid, as sulphides respond with chargeability highs and can be responsible for resistivity lows and magnetic highs. Detailed extension of the O-grid may help delineate the strike and length of cross structures and prioritize the anomalies with greater accuracy.
A line of pole dipole induced polarization l resistivity surveyed across the targets would also provide additional depth information and locate the source more precisely. Other magnetic and apparent resistivity highs or lows (depending on the magnetic and resistivity contrast between the kimberlite and surrounding rock units) should be evaluated.
The geophysical data presented should be used in conjunction with available geological/geochemical data and the profiled geophysical data, to further prioritize the exploration targets.
The digital data from the 0-Block surveys has been archived by JVX. A copy of all the data will be held by JVX on behalf of Sudbury Contact Mines Ltd. Sudbury Contact Mines Ltd. may at any time within this period request copies of the data on a time and materials basis.
If there are any questions with regard to the survey please do not hesitate to call the undersigned at JVX Limited.
Respectfully submitted,
JVX Limited
Albert Vickers, B.Sc. Geophysicist
President
i i i i i i i il APPENDIX A
f Instrument Specification Sheets
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IPR-11 Broadband Time Domain IP Receiver
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The microprocessor-based IPR-11 is the heart of a highly efficient system for measuring, recording and processing spectral IP data. More features than any remotely similar instrument will help you enhance signal/noise, reduce errors and improve data interpretation. On top of all this, tests have shown that survey time may be cut in half, compared with the instrument you may now be using.
The IPR-11 Broadband Time Domain IP Receiver is principally used m electrical (EIP) and magnetic (MIP) induced polari zation surveys for disseminated base metal occurrences such as porphyry cop per m acidic intrusives and lead-zinc
deposits in carbonate rocks In addition, this receiver is used in geoelectncai sur veying for deep groundwater or geother mal resources. For these latter targets, the induced polarization measurements may be as useful as the high accuracy resistivity results since it often happens that geological materials have IP contrasts when resistivity contrasts are absent. A third application of the IPR-11 is in induced polarization research projects such as the study of physical properties of rocks.
Due to its integrated, microprocessor- based design, the IPR-11 provides a large amount of induced polarization transient curve shape information from a remark ably compact, reliable and flexible format. Data from up to six potential dipoles can be measured simultaneously and
Operator using the IPR-11
recorded in solid-state memory. Then, the IPR-11 outputs data as: 1) visual digital display, 2) digital printer profile or pseudo- section plots, 3) digital printer listing,4) a cassette tape or floppy disk record,5) to a microcomputer or 6) to a modem unit for transmission by telephone. Using software available from Scintrex, all spect ral IP and EM coupling parameters can be calculated on a microcomputer.
The IPR-11 is designed for use with the Scintrex line of transmitters, primarily the TSQ series of current and waveform stabilized models. Scintrex has been active in induced polarization research, development, manufacture, consulting and surveying for over thirty years and offers a full range of time and frequency domain instrumentation as well as all accessories necessary . - ' . :
Technical Description of the IPR-11 Broadband Time Domain IP Receiver
Digital Display
Analog Meters
Digital Data Output
Standard Rechargeable Power Supply
Disposable Battery Power Supply
Dimensions
Weight
Operating Temperature Range
Storage Temperature Range
Standard Items
Optional Items
Shipping Weight
Two, 4 digit LCD displays. One presents data, either measured or manually entered by the operator The second display: 1) indicates codes identifying the data shown on the first display, and 2) shows alarm codes indicating errors
Six meters for: 1) checking external circuit resistance, and 2) monitoring input signals
RS-232C compatible, 7 bit ASCII no parity, serial data output for communication with a computer, digital printer digital storage device or modern
Eight rechargeable NiCad D cells provide approximate^ 15 hours of continuous operation at 250C Supplied with a battery charger, suitable for 110/230V. 50 to 400 Hz, 10W
At 25'C about 40 hours of continuous operation are obtained from 8 Eveready E95 or equivalent alkaline D cells
At 25 0C, about 16 hours of continuous operation are obtained from 8 Eveready 1150 or equivalent carbon-zinc D cells
345 mm x 250 mm x 300 mm. including lid.
10 5 kg, including batteries
-20 to -i- 55 0C. limited by display,
-40 to + 600C
Console with lid and set of rechargeable batteries, RS-232C cable and adapter, 2 copies of manual, battery charger
Multidipole Potential Cables, Data Mem ory Expansion Blocks, Crystal Clock, SOFT II Programs. Printer, Cassette Tape Recorder, Disk Drive or Modern.
25 kg includes reusable wooden shipping case
At Scintrex we are continually working to improve our line of products and beneficial innovations may result in changes to our specifications without prior notice
222 Snidercroft Road Concord Ontario Canada L4K 1B5
Geophysical and Geochemical Instrumentation and Services
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Function
The TSQ-3 is a multi-frequency, square wave transmitter suitable for induced polarization and resistivity measurements in either the time or frequency domain. The unit is powered by a separate motor- generator.
The favourable power/weight ratio and compact design of this system make it portable and highly versatile for use with a wide variety of electrode arrays. The medium range power rating is sufficient for use under most geophysical condi tions.
The TSQ-3 has been designed primarily for use with the Scintrex Time Domain and Frequency Domain Receivers, for combined induced polarization and resis tivity measurements, although it is compat ible with most standard time domain and frequency domain receivers. It is also compatible with the Scintrex Commutated DC Resistivity Receivers for resistivity surveying. The TSQ-3 may also be used as a very low frequency electromagnetic transmitter.
Basically the transmitter functions as follows. The motor turns the generator (alternator) which produces 800 Hz, three phase, 230V AC. This energy is trans formed upwards according to a front panel voltage setting by a large transformer housed in the TSQ-3. The resulting AC is then rectified in a rectifier bridge. Commutator switches then control the DC voltage output according to the wave form and frequency selected. Excellent output current stability is ensured by a unique, highly efficient technique based on control of the phase angle of the three phase input power.
TnwDonmn T s l. i. l o enema wich
TSQ-33000 WFeatures
Current outputs up to 10 amperes, voltage outputs up to 1500 volts, maximum power 3000 VA.
Solid state design for both power switch ing and electronic timing control circuits.
Circuit boards are removable for easy servicing.
Switch selectable wave forms: square wave continuous for frequency domain and square wave interrupted with auto matic polarity change for time domain.
Switch selectable frequencies and pulse times.
Overload, underload and thermal protec tion for maximum safety.
Digital readout of output current.
Programmer is crystal controlled for very high stability.
Time and Frequency Domain IP and Resistivity Transmitter
Low loss, solid state output current regulation over broad range of load and input voltage variations.
Rectifier circuit is protected against transients.
Excellent power/weight ratio and efficiency.
Designed for field portability; motor-gene rator is installed on a convenient frame and is easily man-portable. The trans mitter is housed in an aluminum case.
The motor-generator consists of a reliable Briggs and Stratton four stroke engine coupled to a brushless permanent magnet alternator.
New motor-generator design eliminates need for time domain dummy load.
m.- mm m
Waveforms output by the TSQ-3
TechnicalDescription ofTSQ-3/3000WTime and Frequency DomainIP and Resistivity Transmitter
TSQ-3 transmitter with portable motor generator unit
222 Snidercroft Road Concord Ontario Canada L4K 1B5
Telephone: (416) 669-2280 Telex: 06-964570 FAX: (416)669-5132 Cable: Geoscint Toronto
Geophysical and Geochemical Instrumentation and Services
Transmitter Console
Output Power
Output Voltages
Output Current
Output Current Stability
Digital Display
Absolute Accuracy
Current Reading Resolution
Frequency Domain Waveform
Frequency Domain Frequencies
Time Domain Cycle Timing
Time Domain Polarity Change
Time Domain Pulse Durations
Period Time Stability
Efficiency
Operating Temperature Range
Overload Protection
Underload Protection
Thermal Protection
Dimensions
Weight
Power Source
Type
Motor
Alternator
Output Power
Dimensions
Weight
Total System
Shipping Weight
3000 VA maximum ^^
300. 400, 500. 600, 750, 900, 1050 Jwo. 1350 and 1500 volts, switch selectable
10 amperes maximum
Automatically controlled to within ±0.1 "/o for up to 50"Xo external load variation or up to ±100A input voltage variation
Light emitting diodes permit display up to 1999 with variable decimal point; switch selectable to read input voltage, output current, external circuit resistance. Dual current range, switch selectable
± 3?o of full range
1 0 m A on coarse range (0-1 OA) 1 mA on fine range (0-2A)
Square wave, continuous with approximately 68Xo off time at polarity change
Standard: 0.033, 0.1, 0.3, 1.0 and 3.0 Hz, switch selectable Optional: any number of frequencies in range 0 to 5 Hz.
t:t:t:t,on:off:on:off automatic
each 2t; automatic
Standard: t - 1 , 2, 4, 8, 16 or 32 seconds Optional: any other timings
Crystal controlled to better than .01 Vo. An optional high stability clock provides stabiliza tion to better than 1 ppm over -20/ * 50" C.
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-30" C to * 50" C
Automatic shut-off at 3300 VA
Automatic shut-off at current below 1 00 mA
Automatic shut-off at internal temperature of *85"C
350 mm x 530 mm x 320 mm
25.0 kg.
Motor flexibly coupled to alternator and installed on a frame with carrying handles.
Briggs and Stratton, four stroke. 8 H. P.
Permanent magnet type, 800 Hz, three phase 230 V AC.
3500 VA maximum
520 mm x 715 mm x 560 mm
72.5 kg.
1 50 kg includes transmitter console, motor generator, connecting cables and re-usable wooden crates.
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Scintrex has used low power con sumption microprocessors and high density memory chips to create the IGS Integrated Portable Geophysical System; instrumentation which will change the way you do ground geophysics.
Here are the main benefits which you will derive from the IGS family of in strumentation:
1. Depending on your choice of optional sensors you can make one, two or all of: magnetic, VLF and electromagnetic measurements. Thus, you may optimize the IGS system for different geophysical conditions and production requirements.
2. You will save time and money in the acquisition, processing and presen tation of ground geophysical survey data.
3. You will achieve an improvement in the quality of data through enhanced reading resolution, an increase in the number of different parameters measured and/or a higher density of observations. Further, errors which occur in manual transcription and calculation will be eliminated.
4. Your operator will appreciate the simplicity of operation achieved through automation.
5. Since add-on sensors are relatively less expensive, your investment in a range of IGS instrumentation may be much less than it would be with a number of different instruments, each dedicated to a different measurement.
The Scintrex IGS-2/MP-4/VLF-4/EM-4 permits one operator to efficiently measure magnetic, VLF and EM fields and to record data in computer compatible solid-state memory.
System Options and Accessories
222 Snidercroft Road Concord Ontario CanadaL4K1B5
Telephone: (416) 669-2280 Cable: Geoscint Toronto Telex: 06-964570
A. Console and Power Supply
A-1 IGS-2 System Control Console with 16K RAM memory and manual. Note that no battery pack is included so that one of items A-2, A-3 or A-4 should be selected unless the IGS is to be run from an external 12 V DC power source. The battery packs are interchangeable by the user.
A-2 Non-rechargeable Battery Pack in cludes battery holder and 10 disposable 'C' cell batteries. Used in normal portable operation unless temperatures are below -20 0 C in which case the Rechargeable Battery Pack and Charger should be chosen.
A-3 Rechargeable Battery Pack and Charger includes battery holder, 6 rechargeable non-magnetic batteries, charger and one spare cap for the bat tery charging plug. This is the best battery pack for portable total field and gradiometer magnetics since the non-magnetic property of these bat teries ensures a minimum of noise. Also used for light duty (slow cycling) magnetic base station applications and in cold weather where disposable batteries lose power.
A-4 Heavy Duty Rechargeable Battery Pack includes heavy duty recharge able batteries installed in a console with a built-in charger. Useful for rapid cycling base station or mobile applications.
A-5 Low Temperature Battery Extender Kit designed so that battery pack can be worn inside coat in cold weather conditions. Kit includes bottom cover for console, console to battery pack interconnecting cable, cover for bat tery pack and waist belt.
B. Memory Expansion Options
B-1 IGS Memory Expansion l. An addi tional 16K RAM is added to the ex isting memory board for a system total of 32K RAM.
B-2 IGS Memory Expansion II. A further 16K RAM is added to the existing memory board for a system total of 48K RAM.
B-3 IGS Memory Expansion III. An addi tional board is required on which memory can be added in up to six 16K RAM groups. Not available with all sensor options.
B-4 Further Memory Expansion. Memory expansion to a system total of 192K RAM is feasible for some applica tions.
C. Accessories
C-1 RS-232 Cable and Adaptors. Includes a special RS-232 data transfer cable and two IGS-2 to RS-232 cable adap tors. Used for communicating bet ween the IGS-2 and peripheral devices such as a digital printer, microcomputer, cassette recorder, modem or a second IGS-2 (or MP-3 Proton Magnetometer) for diurnal corrections.
C-2 Minor Spare Parts Kit consisting of two keyboard diaphragms and two 2A quick acting fuses.
C-3 Display Heater Option. Required to heat the LCD display on the IGS-2 Console for operation at temperatures below -200 C.
C-4 Digital Printer for use with 110 V AC power supply and with X-on/X-off interfacing for use with IGS-2, MP-3 or VLF-3 instruments, one box of paper, ribbon and manual. Note that the RS-232 Cable and Adaptor are re quired.
C-5 Conversion of Digital Printer for use with 220 V AC power supply.
D. MP-4 Proton Magnetometer Sensor Option
D-1 MP-4 Magnetometer Signal Process ing Board and Magnetometer Pro gram EPROM for mounting in IGS-2 Control Console, manual.
D-2 Portable Total Field Sensor Option including sensor for total field measurements, sensor staff, two sen sor cable assemblies, backpack sen sor harness, spare non-magnetic sensor clamp screw.
D-3 Base Station Sensor Option, in cluding 50 m sensor cable assembly, sensor for total field measurements, sensor tripod, external power cable, analog chart recorder cable and spare non-magnetic sensor clamp screw.
D-4 Gradiometer Sensor Option including second sensor cables, two 0.5 m staff extenders to complement Portable Sensor Option and spare non magnetic sensor clamp screw.
O-*; Soare section for Portable Total Re
E. VLF-4 VLF Electromagnetic Sensor Option
E-1 Two VLF-4 Signal Processing Boards and VLF program EPROM for mount ing inside IGS-2 System Control Con sole, dual coil VLF-magnetic field sensor with level compensator, sensor-console interconnecting cable, harness and support for back mount ing of sensor, manual.
E-2 VLF EM Primary Field Drift Correction Option consisting of two program EPROMS which replace the standard VLF program EPROMS in each of the portable and base station VLF units.
E-3 VLF Electric Field Sensor Option for VLF resistivity measurements. In cludes two capacitive electrodes with integral preamplifiers and 5 m of cable. Longer cable lengths on request.
F. EM-4 Genie/Horizontal Loop Electromagnetic Sensor Option
F-1 Two EM-4 Signal Processing Boards for mounting either inside IGS-2 System Control Console or the EM-4 Genie/Horizontal Loop Expansion Module, one program EPROM for mounting inside IGS-2, one receive coil, one interconnecting cable, manual.
F-2 EM-4 Tiltmeter/lntercom Module. Per mits Horizontal Loop measurements to be made with magnetics but without VLF.
F-3 EM-4 Genie/Horizontal Loop Expan sion Module. Permits Horizontal Loop measurements to be made with both magnetics and VLF.
F-4 Genie/Horizontal Loop Portable Elec tromagnetic Transmitter complete with heavy duty battery pack, battery
. charger, manual.
F-5 TM-2 Tiltmeter/lntercom Module used with TM-2 when Horizontal Loop measurements are to be made.
F-6 Transmitter-Receiver Interconnecting Cables for Horizontal Loop measure ments are made to order, in any lengths up to 300m.
G. Carrying Cases
A variety of carrying cases are available to suit different combinations of console and sensor options.
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APPENDIX B
GRADIENT ARRAY CURRENT ELECTRODE POSITIONS
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GRADIENT ARRAY CURRENT BLBCTRODB POSITIONS
O-Block, Bisley Twp.
Electrode Line
O-Block (Array Ol)
(Array 02)
O1-C1 01-C2
O2-C1 02-02
400N 400N
500S 500S
Slat.
1000W 1400E
975W 1525E
APPENDIX C
Plates
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GEOPHYSICAL PLATES
O-Block, Bisley Twp.
Plate O-l: Total Field Magnetic Contours O-Block, Bisley Twp, Scale 1:2500.
Plate O-2: Profiles/Posted Values Total Total Field Magnetic Survey, O-Block, Bisley Twp. Scale 1:2500.
Plate 0-3: Apparent Resistivity Contours O-Block, Bisley Twp. Scale 1:2500.
Plate 0-4: Profile/Posted Values IP/Res. O-Block, Bisley Twp. Scale 1:2500.
Plate 0-5: Compilation MapO-Block, Bisley Twp. Scale 1:2500.
32D05SW9484 2.15226 BISLEY
ntario 900
Ministry of Ministere duNorthern Development Developpement du Nordand Mines et des Mines
Mining Lands Section Geoscience Approvals Office 933 Ramsey Lake Road 6th Floor Sudbury, Ontario P3E 6B5
Telephone: Fax:
(705) 670-5853 (705) 670-5863
February 4, 1994 Our File: 2.15226 Transaction #: W9380.00303
Recording Office Ministry of Northern Development and Mines 4 Government Road East Kirkland Lake, Ontario P2N 1A2
Dear Sir/Madam:
Subject: APPROVAL OF ASSESSMENT WORK CREDITS ON MINING CLAIMS L1186480 ET AL IN BISLEY TOWNSHIP
The assessment work credits for Geophysics filed under Section 14 of the Mining Act Regulations have been approved as outlined in the original submission.
The approval date is February 3, 1994.
If you have any questions regarding this correspondence, please contact Lucille Jerome at (705) 670-5855.
Yours sincerely,
Ron C. GashinskiSenior Manager, Mining Lands Section Mining and Land Management Branch Mines and Minerals Division
'XVLJ/
cc: Resident GeologistKirkland Lake, Ontario
Assessment Files Library Toronto, Ontario
Ministry ofNorthern Developments, Jlnee
Report of Work Conducted After Recording Claim
OntarioParsonal InforrnlHon oollactad on this form la obtalnad undar tha authority of the Mining Act. This Mforrnatlonwm be ijesd for 00this collection should ba dlractad to tha Provincial Managar. Mining Lands. Ministry of Northam Development and Mlnas. Fourth Floor. 158 Cadar Straat.Sudbury, Ontario. P3E BA6, talaphona (706) 070-7264. ^ ~
Inatructlone: - Please type or print and submit in duplicate. ^ * l *J ^ *W V- 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. O-GEOPHTSICS
Racordsd HoWar(i) SUDBURY CONTACT MIMES LTD.
AdJrssi 401 BAT STREET, SUITE 2302, TORONTO, ONT. M5H 2Y4
Mining Division TowMNp/Araa LARDER LAKE BISLEY TOWNSHIP
Worti From: OCTOBER 7, 1992 PtrfonnM
Client No. 198617
TttWl212
Mor Q P^No. wwl
To: DECEMBER 15, 1992
Work Performed (Check One Work Group Only)WorkGroup
Z Qeotechnics) Survey
Physical Work, Including Drilling
Rehabilitation
Other Authorized Work
AssaysAssignment from Reserve
TypeMAGNETICS AND I. P. 1 RESISTIVITY SURVEYS
-
L^v6/^ .—— Ei'T-iMOV 2 4 W*
IM^. .AND -~"CHf
Total Assessment Work Claimed on the Attached Statement of Coats 9Note: The Minister may reject for assessment work credH aN or part of the assessment work submitted if the recorded
holder cannot verify expenditures ctajnjed. Jn -t** **t*0*nt of costs wttMn 30 day* of a request for verification.
Persona and Survey Company Who Performed the Work (Give Name and Address of Author of Report)Name
JVX LTDU
.
Address
60 WEST WILMOT ST. UNIT 22
RICHMOND HILL, ONT. L4B 1M6
- - - - - --- - - -
(attach a schedule M neoeessiy)
Certification of Beneficial Interest * See Note No. 1 on reverse aide
by the current recorded holder.
*" : . r - rMooraMHouworApMWflMun))
Certification of Work Report1 certify that 1 hava a paraonal knowladga of tha facts sst forth In this Work raport, hawing partormad tha work or wttnaasad ssma during and/or aftar Ka completion and annexed raport la true.
Name and Address of Parson CertifyingDAVID W. CHRISTIE, 141 ADELAIDE ST. WEST, SUITE 603./TORONTO, ONT. M5H 3L5
0241(03*1)
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ord
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ase
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* of t
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1. D
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laim
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in th
is re
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ork.
3. D
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are
to b
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on
the
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app
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.
In th
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hat y
ou h
ave
riot i
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Exam
ple*
of b
enef
icial
Inte
n to
the
mini
ng, c
laim
*.
1 ed
your
cho
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f prio
rity,
optio
n on
e wi
ll be
imple
men
ted.
i rt a
r* u
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d tra
nsfe
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mem
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, ple
a**
com
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e th
e fo
llowi
ng:
——
——
——
——
——
——
——
——
——
——
— l —
——
——
——
——
——
——
——
— -,
——
——
——
——
——
——
——
——
——
——
——
——
——
——
——
——
——
——
l c
ertif
y th
at th
e re
cord
ed h
olde
r had
a b
enef
icial
inte
rest
in th
e pa
tent
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or le
ased
land
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me
the
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per
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Sign
atur
eDa
te
OCTOBER 18. 1993
GROUND GEOPHYSICSUNECUTTINQ MAGNETIC SURVEY GRADIENT IP SURVEY PROJECT GEOLOGIST
SUDBURY CONTACT MINES LTD.CERTIRED STATEMENT OF EXPENDITURESBLAKE RIVER RECONNAISSANCE PROJECT
GRID 'O1 BISLEY TOWNSHIP, ONTARIO
21.5KMXS285/KM 21.5KMXS120.04/KM 19.5KMXS472.09/KM 2DAYSXS225/DAY
TOTAL:
16.127,5012,580.80S9.205.SO
1250.00118,164.10
CLAIM L-1186480(6 UNITS) CLAIM L-1186435(8 UNITS) CLAIM L-1186438(2 UNITS) CLAIM L-1186437(1 UNIT) CLAIM L-1186462(1 UNIT)
VALUE OF WORK DONE ON THIS CLAIM
16,055 S8.073 S2.018 S1.009 11,009
VALUE APPLIED TO THIS CLAIM
S6.055 S8.073 12,018 11.009 11,009
VALUE ASSIGNED FROM THIS CLAIM
SO SO SO 10 SO
RESERVESOso so soSO
TOTAL: Si 8,164
FED ON ThllSJBTH DAY OF OCTOBER 1993
S18,164
PROJECT GEOLOGIST FOR SUDBURY CONTACT MINES LTD.
W. A. HUBACHECK CONSULTANTS LTD.
airto
* of Work Conduct*! Afttr R-cofdlnQ Claim
t '. .uiioSan *ooM b* **e*d' .my, OMSrtO, MB IM. Mtptow (70S) STD-TIM.
u*x*. MM*? tt and MUM, fauna noer. w C*d*f Em*.
'ructfonai . Plaaaa typo or print and submk In dupHcata.. Rafar to tha Mining Act and RagutaHona tor raquJramanta of SHng aaaaaamant work or consult tha Mining
Raeordar.- A aapa/ata copy of this form must ba oompkttad tor aaoh Work Group. . Taohnlcal reports and maps must accompany this form In dupUcata. . A akatch, showing th* claims tha work Is asslgnad to, must accompany this form. O-CEOPHYSICS
' rtl-H-J"w 8DDBURT COBTICT MIMESLTD.
M 401 BAT STREET. SUITE 2302, TOROVTO, OUT. MSB 2T4
:n9DM-0n LABDKRLARE
88? _ , Fiom: OCTOBER 7. 1992PM muN
" "" "^BisusiTowisnp
C"-Mlla 198617
TTO*i7ji2uMOT Q n* NO. ^jjjj
T* DECEMBER 15, 1992
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-
:(AlAssassm*fitWorkCtsJm*donth*Attacr*sd8tat*rn*rtofOo^ a HUT
tss Tha Mlntotar may rajact for aasssafnam work wwB aB of part of tha hokJaf cannot varlfy axpandlturaa olajniad. In IN rttttmarrt of coats
dHo* a rwjoasl for
. , ivviw *iiu QWiwvy ^nm^jaif wim rv* i vi HOU HW ww* |unv IVHIHI wu nuwww vi fwwwi w iwiMnyNams
JVX LTD.
1
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60 VEST VIUDT ST. WIT 22
RICBMOUD BILL, 0-T. L4l IMS
-
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r1 M**V NISI li Ih* KM MM MA *Mf ̂ port *MN iMorMIn tw oumm hoUW\i NM OWISHt fVOSfBStf MWw.
vrtlftoaUon of Work Haportptnonst
lU COMBNSWI SM VWWMd flpQft It MW.91 ttw tort* MI terth In tt* Work rtport. tMMn0 pwtaniMd ir* work
DAVID W. CHRISTIE, Ul ADCIAIDI ST. VEST, , OR. M5H 3L5
1'ur Offtoa Us* Only-ra
S***
HOU 19 '93 15:15 PAGE.013
TRIM LINK
SBPERENCESmem
•UtO.
UUX - SURFACE MONTY ONLYM.*1. -MININGAND OfflFACt JtttHTB
Or*rN*. O—
•MNET TWp.
IIM.
THACKERAY TWP.
- - -i 1186150 L 1 i
_ -\ i II8633BX1 j "-——~l...^.JC
' "WW9 J II86336 j '
4M.5M.
•5M.
HIGHWAY AND ROUTE M*. OTHER ROADSTRAILSSURVEYED LINES:
TOWNSHIPS, IASE Llttt*, ETC LOTS, MINING CLAIMS, MR^LS, ETC.
UNSURVEYEO LINGS: LOT LINES PARCEL BOUNDARY MINING CLAIMS ETC
RAILWAY AND RIGHT OF WAY UTILITY LINES NON-PERENNIAL STREAM FLOODING OR FLOODING MIGHTS SUBDIVISION OR COMPOSITE PLAN RESERVATIONS ORIGINAL SHORELINE MARSH OR MUSKEG MINES TRAVERSE MONUMENT
THE INFORMATION THATM APfEARS ON THIS MAP
- - HAS BEEN COMPILEDFROM VARIOUS SOURCES, AND ACCURACY IS NOT GUARANTEED THOSE WISHING TO STAKE MIN ING CLAIMS SHOULD CON SULT WITH THE MINING RECORDER MINISTRY OF NOffTHtffN* DEVELOP WENT AND MtNCS, FOR AO DITIONAL INFORMATION ON THE STATUS OF THE LANDS SHOWN HEREON.
NOTICE OF FdRESTRY AOffVITYtM* tOWWHT y AIWAfAU-S .WTHN THE ———
: I*.Q. 8QX 129 SMW*TIKA.^N W* (TO705-642-3228,
32D05SW9404 S. 15226 BISLEY200
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fATENT, SURFACE ft MINING RlOHTS-.-,,.—...^— w " .SURFACE RIGHTS ONLY...™....__.......... 6" .MINING BIGHTS ONLY—__,.,.™,.,.....^., d
LHASE,SURFACE*MINING RtCMTS..,..—,—.....,— V" , SURFACE RIGHTS ONLY,.....1..,......™..J™. fi" , MINING RIGHTS ONLY.:...,^....™.™..™,... O
LICENCE OF OCCUPATION .___.....— *"
RtSERVATION CANCELLED •AND* GRAVEL
™. OC
———- \^E: MINING MIGHTS IN l*AKC*kf FATVMTiD MION TO MAV f.
1*19. VMTKO IN O M ̂ IN At PATIMTM *V TMC PUtCfC LANM ACT. B.t.O ItT*, CHAT. MO. MC M. SUMCC 1.
SCALE: 1 INCH - 40 CHAINS
MIT9 'OOP 2000 4000
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NOD(2KU|
'^OV 19 1993
LARDER LAKE G RECORDER OFFICE
DISTRICTKIRKLAND LAKEVUJIM6 tfVlflOM
LARDER LAKEUNO TITUS/ AE6I4T1Y DIVISION
COCHRANE
MJnMryofNatural Manag*m*nt Resources Branch
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: DGC sBLAKE RIVER RECONNAISSANCE PROJECT
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CONTOUR INTERVALS : 5, 25, & 125 nTBASE LEVEL : 58000 nT
REL. HIGH; * ; REL. LOW: TSCINTREX 1GS-2/MP-4 ___ ——
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SURVEY BYJVX LTD.
NOVEMBER, 1992O BLOCK PLATE 0-1
32D05SW9404 2.15226 BISLEY 210 JVX R*f No. 9231
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BASE LEVEL : 58000 nT SCINTREX IGS-2/MP-4—^^—-——
SCALE 1:2500
SURVEY BYJVX LTD.
NOVEMBER, 1992O BLOCK PLATE 0-2
32D05SW94C4 2.15226 BISLEY 220
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SCALE 1:2500t?
SURVEY BYJVX LTD.
NOVEMBER, 1998 O BLOCK PLATE 0-3
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32D&5SW9404 2.15226 BISLEY 230
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GRADIENT ARRAY : 50 m 'a' spacing RES. PROFILE: l cm - 4000 ohm m ; BASE - 5000 ohm m
CHAR. PROFILES: l cm ~ 2 mV/V; BASE ^ 5 mV/V ________SCINTREX TSQ-3 3.0 kW Tx fie IFR-11 Rx
SCALE 1:2500
SURVEY BYJVX LTD.
NOVEMBER, 1992 O BLOCK PLATE 0-4
1522 6
JVX Ret No. 9E3I
32D05SW9404 2.15226 BISLEY 240
Area of
outcrop
ea of
Interpreted continuation of
possible magnetic dyke Ml
Interpreted continuation of possible magnetic dyke M2
so s m
Area of outcropn , Outcrop
Resistivity low
Resistivity high
Suggested Exploration Targets :
T-3High priority
Medium priority
Low priority
:;\ p o n,:0-::,
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SUDBURY CONTACTBLAKE RIVER RECONNAISSANCE PROJECT
BISLEY r
GRID MAP COMPILATION MAP
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SURVEY BYJVX LTD.
NOVEMBER, 1992PLATE 0-5O BLOCK
JVX Ref No 923)
32D055W9404 2.15226 BISLEY 250