MAY D. R. Bell, B.Se. April, 1974 RECEIVED REPORT MAGNETOMETER AND ELECTROMAGNETIC SURVEYS OF THE FRANK PFEIFER CLAIM SHAW TOWNSHIP

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1 RECEIVED MAY PROJECTS UNIT 42Ae6NE034a SHAW 010 REPORT ON MAGNETOMETER AND ELECTROMAGNETIC SURVEYS OF THE FRANK PFEIFER CLAIM SHAW TOWNSHIP PORCUPINE MINING DIVISION ONTARIO D. R. Bell, B.Se. April, 1974

2 1. Introduction; ^^ A McPhar vertical loop electromagnetic and magnetometer survey, was completed during the month of November 1973 j on the Frank Pfeifer claim, situated in Shaw Township j Porcupine Mining Division, Ontario, The survey was performed by John J. Johnson, 112 Second Ave., Timmins, Ontario. 2. Location and Accessibility; The claim is located in the central section of Shaw Township and is accessible by a gravel all season road, south from South Porcupine, a distance of some six miles from the Ontario Northland Railway Station. 3. Ownership and Title; Mineral rights held by - Frank Pfeifer, Box 382, South Porcupine, Ontario. Lie. No. - M19337 Claim No. - P Percent Interest - 4. geological Data ; Only one outcrop of rock is exposed on the property, which was trenched by Frank Pfeifer. The rock in the trench is a sheared mafic volcanic bearing 090 degrees east, mineralized with l-2# disseminated pyrite and trace chalcopyrite* The rest of the property is covered by glacial sand and gravels, and glacial outwash varved clays.

3 -2- The general geology of the surrounding properties in Shaw Township consists of early Archean Precambrian basic volcanics and inter flow sedimentary rocks containing iron formations. These volcanics were later intruded by ultramafic and ultrabasic serpentinites and metagabbros. The picket lines were oriented in a north-south orientation, such that the survey lines would be as near as possible at right angles to the formation. There is no previously recorded work done on this claim. S. Magnetometer Survey; (a) Grid - 1. Baseline - bearing 090E, 2. Crossline - bearing 360N and 400 ft. intervals. 3. Total line/miles -1.1 miles, 5600 ft. 4. Stations - total Personnel - John J. Johnson, 112 Second Ave., Timmins, Ontario. (b) Survey Method - 1. Instrument - McPhar - M700 Fluxgate magnetometer, a battery operated, transistorized, direct reading instrument which measures the vertical component of the earth's magnetic field. - Scale constant 20 gammas 2. Theory of Method - the fluxgate magnetometer employs a saturable core system consisting of two highly permeable metallic strips

4 "3 about which primary coils have been wound. A low frequency field (l KH2) is applied to the coils through an oscillator. The field is sinusoidal and drives the strips into saturation during each half cycle resulting in an even change of permeability of these cores (at KH2). Any ambient magnetic field acting on this system yields a flux or phase variation which, when "gated" at the proper frequency (in this case the second harmonic), induces voltage pulses in an adjacent secondary winding. These pulses are amplified, fed into a phase dector and emerge as a D.C. signal. This signal is directly proportional to the strength of the ambient field and, therefore the strength of the field can be read on a voltmeter calibrated in gammas* The accuracy of the McPhar instrument is generally within 1/2/6 of full scale between the 1000 and 10,000 gamma ranges and within 1J6 between the 10,000 and 30,000 gamma range. 3. Procedure - a magnetic base station was established at 10+50W on the 0+00 Baseline. Readings were then taken at 50 ft. intervals on the crosslines, and check readings were taken at the base station in order that a

5 -4- correction curve for the diurnal variation could be established. Using this curve, all readings were corrected for diurnal and instrument drift variat ions. 6. Elcctromagnetic Survey: (a) Grid - same as for magnetic survey. (b) Survey Method - 1. Instrument - McPhar SS-15 Vertical loop EM System; a dual frequency fixed source, tilt angle method. 2. Operating Frequency and 5000 C.P.S. 3. Operating Range feet. 4. Transmitter Power watt supplied by gas-powered motor generator. 5. Transmitter - a mast-mounted, triangular cable loop about 10' per side. The loop can be rotated about a vertical axis. 6. Receiver - a tuned pick-up coil assembly together with a transisterized amplifier with earphone outlet and a built-in clinometer for dip angle measurement, 7. Theory of Method - the basic principle is essentially that a horizontal electromagnetic field generated by passing an alternating current through a wire loop will induce electrical "eddy" currents in any adjacent conductive media in the earth. The in-

6 -5- duced current in any conductor will in turn regenerate a secondary, electro magnetic field. The location and orientation of the principal axes of any secondary field and, hence, the location and orientation of the source conductor can be determined by measuring tilt angles with a receiving coil. To do this the coil is rotated about a selected axis until a null position is obtained. This null position is essentially the orientation of the receiver coil producing minimum induction. The axis of orientation must be selected such that it is horizontal and lies in a direction parallel to the plane of the receiver coil and normal to the plane of the transmitting loop. 8. Procedure - Sites for the transmitter locations are selected at convenient points throughout the property. The transmitter apparatus is set up and current is applied. The plane of the loop must be kept as nearly as possible in a direction normal to location of each receiver station. The person operating the receiver orients the coil about a vertical axes until a null point is established. The direction of the plane of the coil is now parallel

7 -6- to an axis which is normal to the plane of the transmitter loop. Next, the receiver coil is held in a horizontal position in this position. If no secondary field is present a null will be obtained in the horizontal posit ion. If such a field is present, its tilt angle is measured by rotating the coil until a null is received. The dip or tilt angle is read on a clinometer attached to the receiver apparatus. The amount of tilt recorded at each station is plotted graphically on the line plane and connected by a curve. A cross-over point is in theory, that point on the line where the curve changes from positive to negative, and in practice it is a point of inflection on the curve. This is due in part to distortion of the secondary field and to interference from other minor, conductors. 7. Results ; (a) Magnetometer Survey - the east-west magnetic trend reflects the general pattern and trend of the metamorphic fabric of the mafic meta volcanic rocks. Intrusive rocks mapped in Shaw Township of ultra mafic types do not seem to exhibit a magnetic "relief" of sufficient contrast to distinguish them from the older mafic volcanic flows. This is

8 -7- probably due to the intense, superimposed regional metamorphism. (b) Electromagnetic Survey - a weak conductor generally reflects a trend east-west following the north contact of the weak magnetic anomaly. This is probably due to shearing and possible disseminated sulphides. 8. Conclusions; The small trench exposed by Frank Pfeifer is located just fifty feet north of the weak electromagnetic cross-over on line 12+OOW. This trench indicates minor disseminated pyrite and trace chalcopyrite in a sheared mafic volcanic. Further trench ing or stripping south of this trench along the projected anomaly is recommended. Respectfully submitted, David R. Bell, B.Se. April 25, 1974.

9 PERFORMANCE ft COX Township or Area. Type of Survey ASSESSMENT WORK DETAILS ^L if-tt-*? a- TJ A separajjf form is tcnuired for each type of survey 42A06NEe SHAW 300 Chief Line Cutter or Contractor Party Chief. Consultant. S3* J Address Name Address Name Address COVERING DATES Line Cutting Field Instrument work, geological mapping, sampling etc. Office. INSTRUMENT DATA Make, Model and Type 'To Scale Constant or Sensitivity Or provide copy of instrument data from Manufacturer's brochure, i 'd &A4 Radiometric Background Count Number of Stations Within Claim Group Number of Readings Within Claim Group Number of Miles of Line cut Within Claim Group. Number of Samples Collected Within Claim Group. CREDITS REQUESTED Geological Survey 20 DAYS per claim D 40 DAYS Includes per claim (Line cutting) TOTAL Geophysical Survey Geochemical Survey DATE SIGNED D n Show Check Send in duplicate to: FRED W. MATTHEWS SUPER VISOR- DEPARTMENT OF MINES NORTHERN AFFAIRSAV o WHITNEY B LOCK ""Ml O QUEEN'S PARK TORONTO, ONTARIpRQJECTS.UNIT Performance and coverage credits do not apply to airborne surveys

10 SUBMISSION OF GEOLOGICAL, GEOPHYSICAL AND GEOCHEMICAL SURVEYS AS ASSESSMENT WORK In order to simplify the filing of geological, geochemical and ground geophysical surveys for assessment work, the Minister has approved the following procedure under Section 84 (8a) of the Ontario Mining Act. This special provision does not apply to airborne geophysical surveys. If, in the opinion of the Minister, a ground geophysical survey meets the requirements prescribed for such a survey, including: (a) substantial and systematic coverage of each claim (b) line spacing not exceeding 400 foot intervals (c) stations not exceeding 100 foot intervals or (d) the average number of readings per claim not less than 40 readings it will qualify for a credit of 40 assessment work days for each claim so covered. It will not be necessary for the applicant to furnish any data or breakdown concerning the persons employed in the survey except for the names and addresses of those in charge of the various phases (linecutting contractor, etc.). It will be assumed that the required number of man days were spent in producing the survey to qualify for the specified credit. Each additional ground geophysical survey using the same grid system and otherwise meeting these requirements will qualify for an assessment work credit of 20 days. A geological survey using the same grid system, and meeting the requirements for submission of geological surveys for maximum credits will qualify for an assessment work credit of 20 days. If line cutting has not previously been reported with any other survey and is reported in conjunction with the geological survey a credit of 40 days per claim will be allowed for the survey. Similarly, a geochemical survey using the same grid system with the average number of collected samples per claim being not less than 40 samples, and meeting the requirements for the submission of geochemical surveys for maximum credits, will qualify for an assessment work credit of 20 days. If line cutting has not previously been reported with any other survey and is reported in conjunction with the geochemical survey a credit of 40 days per claim will be allowed for the survey. Credits for partial coverage or for surveys not meeting requirements for full credit will bc granted on a pro-rata basis. If the credits are reduced for any reason, a fifteen day Notice of Intent will be issued. During this period, the applicant may apply to the Mining Commissioner for relief if his claims are jeopardized for lack of work or, if he wishes, may file with the Department, normal assessment work breakdowns listing the names of the employees and the dates of work. The survey would then be re-assessed to determine if higher credits may be allowed under the provisions of subsections 8 and 9 of section 84 of the Mining Act. If new breakdowns are not submitted, the Performance and Coverage credits are confirmed to the Mining Recorder at the end of the fifteen days.

11 PERFORMANCE 8e COVERAGE CREDITS ASSESSMENT WORK DETAILS Township or Area r ff Type of Survey- arate form is requktd for each type of survey MINING CLAIMS TRAVERSED List numerically Chief Line Cutter or Contractor Party Chief. Address Consultant. Name Address COVERING DATES l Line Cutting s *? 3 Field Office. Instrument work, geological mapping, sampling etc. INSTRUMENT DATA Make, Model and Type. 7r /r Scale Constant or Sensitivity. Or p rovide copy of instrument data from Manufacturer"s b rochure. Radiometric Background Count Number of Stations Within Claim Group Number of Readings Within Claim Group *f lo* Number of Miles of Line cut Within Claim Group. Number of Samples Collected Within Claim Group. CREDITS REQUESTED Geological Survey 20 DAYS 40 DAYS Includes per claim (Line cutting) D TOTAL Geophysical Survey Geochemical Survey DATE xy&m-*? /~ 4 SIGNED; Q Show Check v' Send in duplicate to: FRED W. MATTHEWS SUPERVISOR-PROJECTS SECTION DEPARTMENT OF MINES 4^AY 3 W NORTHERN AFFAIRS WHITNEY BLOCK QUEEN'S PARK TORONTO, ONTARIO PROJECTS 19 ft Performance and coverage credits do not apply to airborne surveys

12 SUBMISSION OF GEOLOGICAL, GEOPHYSICAL AND GEOCHEMICAL SURVEYS AS ASSESSMENT WORK In order to simplify the filing of geological, geochemical and ground geophysical surveys for assessment work, the Minister has approved the following procedure under Section 84 (8a) of the Ontario Mining Act. This special provision does not apply to airborne geophysical surveys. If, in the opinion of the Minister, a ground geophysical survey meets the requirements prescribed for such a survey, including: (a) substantial and systematic coverage of each claim (b) line spacing not exceeding 400 foot intervals (c) stations not exceeding 100 foot intervals or (d) the average number of readings per claim not less than 40 readings it will qualify for a credit of 40 assessment work days for each claim so covered. It will not be necessary for the applicant to furnish any data or breakdown concerning the persons employed in the survey except for the names and addresses of those in charge of the various phases (linecutting contractor, etc.). It will be assumed that the required number of man days were spent in producing the survey to qualify for the specified credit. Each additional ground geophysical survey using the same grid system and otherwise meeting these requirements will qualify for an assessment work credit of 20 days. A geological survey using the same grid system, and meeting the requirements for submission of geological surveys for maximum credits will qualify for an assessment work credit of 20 days. If line cutting has not previously been reported with any other survey and is reported in conjunction with the geological survey a credit of 40 days per claim will be allowed for the survey. Similarly, a geochemical survey using the same grid system with the average number of collected samples per claim being not less than 40 samples, and meeting the requirements for the submission of geochemical surveys for maximum credits, will qualify for an assessment work credit of 20 days. If line cutting has not previously been reported with any other survey and is reported in conjunction with the geochemical survey a credit of 40 days per claim will be allowed for the survey. Credits for partial coverage or for surveys not meeting requirements for full credit will be granted on a pro-rata basis. If the credits are reduced for any reason, a fifteen day Notice of Intent will be issued. During this period, the applicant may apply to the Mining Commissioner for relief if his claims are jeopardized for lack of work or, if he wishes, may file with the Department, normal assessment work breakdowns listing the names of the employees and the dates of work. The survey would then be re-assessed to determine if higher credits may be allowed under the provisions of subsections 8 and 9 of section 84 of the Mining Act. If new breakdowns are not submitted, the Performance and Coverage credits are confirmed to the Mining Recorder at the end of the fifteen days.

13 Whitney Twp. (M. 319) TISDALE WflTER L ' UO' 2*60 DIVISION L...J 36342^ (WENTEO UANP CROWN LANS o s g H n: s. s CVJ LOCATED LAWD LICENSE OF MINING JufeHTS LQCATiO* NO ~ 8)508- -, H POffR UNB* MARSH NHNES '1026 l T389004^ *f* JBOSftS- No Th1* lowntwo (its within the Of CITY df DATlOFlSS j.. _. 12 II Eldorado Twp. (M. 276) LAN: NO., S HAW 200 MINISTRY OF NATURAL RESOURCE SURVEYS AND MAPPING BRANCH

14 12*OOW 8+00 W 4+OOW 0*00 StOON 4tOON MAGNETOMETER SURVEY BY JOHN J. JOHNSON FOR FRANK PEFEIFER SHAW TOWNSHIP PROPERTY PORCUPINE MINING DIVISION, ONTARIO, SCALE: " s 200' 0*00 FEB. 7, LEGEND MEASURE STATION ALONG PICKET LINE wo RELATIVE VALUE OF THE VERTICAL COMPONENT OF THE EARTHS MAGNETIC FIELD IN GAMMAS. MAGNETIC CONTOUR. MAGNETIC DEPRESSION. 4+OOS O. /\ CLAIM POST LOCATED. CLAIM LINE. MAIN MAGNETIC BASE STATION. INSTRUMENT McPHAR M 700 FLUXGATE MAG. SCALE CONSTANT 20 GAMMAS. CONTOUR INTERVAL 100 GAMMAS S 42Ae6NEB SHAW 210

15 !2tOOW 8+00 W 4+00 W 8+OON 4+OON ELECTRO MAGNETIC SURVEY BY JOHN J. JOHNSON FOR FRANK PEFEIFER SHAW TOWNSHIP PROPERTY PORCUPINE MINING DIVISION, ONTARIO. SCALE : l" : 200' FEB. 7, LEGEND TRANSMITTER LOCATION F. No. l READ FROM TRANSMITTER LOCATION O CLAIM POST CLAIM LINE ^ CONDUCTOR AXIS X 2 2 SOUTH DIP ANGLE z 5 0^ N ORTH DIP ANGLE 4+00 S INSTRUMENT McPHAR SSI5 VERTICAL LOOP USING 1000 C PS S 42AC6NE034a SHAW eeo