DIGHEM SURVEY COPPERFIELDS CLAIMS TEMAGAMI, ONTARIO DIGHEM LIMITED

Transcription

1 Report No. N.T. S. No 66 T 31-M- 31MaSWe S TRATHCONA 010 DIGHEM SURVEY COPPERFIELDS CLAIMS TEMAGAMI, ONTARIO BY DIGHEM LIMITED April 3, Toronto, Ontario. D. C. Fraser

2 SUM MA R Y A total of 117 line-miles were flown in the Temagami area of Ontario, of which 7 line-miles were over Copperfields Mining Corporation claims. The survey was flown in the interval February 1 to March, The deep penetration channel seldom had noise in excess of ppm. The photomosaic anomaly map contains both anomaly locations and interpretations.

3 INTRODUCTION A DIGHEM survey of 117 line-miles was flown over claims owned by Copperfields Mining Corporation during February and March of 1970, in the Temagami area of Ontario. The equipment provided five channels of EM data at 918 hz, and radioaltitude. The channels and noise levels were: Channel Time Constant Scale ppm/mm Noise ppm horizontal null coil quadrature vertical null coil quadrature maximum- coupled coil inphase maximum- coupled coil quadrature maximum- coupled coil inphase radioaltitude 1 sec 1 sec 1 sec 1 sec sec The quoted noise levels are valid for wind speeds up to 0 mph. Higher winds may cause the system to be grounded because excessive bird swinging produced control difficulties in piloting the helicopter. The swinging results from the 0 square feet of area which is presented by the bird to broadside gusts. The DIGHEM system nevertheless can be flown under wind conditions that ground all other continuous wave AEM systems. The survey was flown in a north-south direction at a line-spacing of 1/Sth mile, using the FH-1100 helicopter CF-DAL. Ancillary equipment consisted of a Bonzer radioaltimeter, Traid sequence camera, MFE 6-channel hot pen recorder, and a 60 hz monitor. The DIGHEM equipment was constructed by Barringer Research Limited, and is described in a brochure appended to the rear of this report.

4 - - DATA PRESENTATION The data in the vicinity of the claims is presented on a sheet compiled from an uncontrolled photomosaic. The anomalies are interpreted according to the conductivity-thickness in mhos of an oblique-striking vertical dike model. Generally, only bedrock conductors are shown because the multiple EM channels usually allow surface (e. g., swamp) conductors to be eliminated by interpretation. Consequently, all anomalies generally can be considered to represent bedrock conductors and, as such, could reflect ore regardless of their conductivity-thicknesses. However, conductors may be placed into three catagories for sake of comparison from area to area, i. e., conductivity-thickness (mhos) ^ 9 conductor quality fair 10-9 good ^ 30 excellent The mho values are independent of flying height or depth of burial apart from the averaging of the response of a conductor over a greater portion of the body as height increases. Weak responses from deeply buried conductors are not confused with weak responses from shallow conductors because the former will have larger mho values. in ppm and mhos. The attached data sheet provides a tabulation of the anomalies

5 - 3 - ASSESSMENT WORK Assessment credits of 0 days per claim are required to keep the claims (see listing appended to the rear) in good standing. The 7 line-mile survey over the claims was characterized by exceptionally good navigational control due to the large number of recognizable geographical features, so that 1/8 mile line-spacing was maintained fairly accurately. In addition, data well outside the claim boundaries is provided to allow a better appreciation of the survey information within the claims themselves. As a point of interest, the four anomalies on lines 1-17 represent the massive pyrite zone of the Temagami mine of Copperfields Mining Corporation Limited. Only one anomaly was obtained within the claim area, on line 9. It will be prospected next winter. Respectfully submitted, DCF/ap D. C. Fraser, Chief Geophysicist Drawing #3908 accompanies this report, illustrating claim locations, flight lines and anomalies.

6 DIGllJiM DATA SllliliY JOB: D, TEMAGAMI, ONTARIO. DATE: A PRIL 1,1970. ' LINE 1 N 1 N 16 S 17 S 9 S 7 N Inphase Max- C )upled ppm 16 7 Quad. ppm 11 9 Vert. Null Quad. - 3 j)pm Horiz. Null Quad. ppm CONDUCTIVITY- THICKNESS mhos 8 N 9 S 61 N 13 ' S * - - '

7 CLAIM LISTINGS TEMAGAMI GROUPS T T T-6188 T-6188 T T T ' T T L L-1037 L L-1037 L-1037 L L L L L L-89 L-80 L-81 L-8 L-83 L-8 L-8 L-86 L-87 L-88 L-89 L-860 L-861 L-86 L-863 L-86 L-86 L-866 L-867 L-868 O'CONNOR GROUPS L-090 L-0906 L-0907 L-0908 L-0909 L L L-0906 L L-0906 L L L L T-899

8 Cynthia Twp. North Arm P.?,1.,.. THE TOWNSHIP OF Map JOAN U - - U-J -.! O '? -18)1* ^ 1 O '??!6633 t ',fc 1 DISTRICT OF NIPISSING LARDER LAKE MINING DIVISION Northwest SCALE 1-INCH =0 CHAINS ^ I6\?/ 1^1^ ~~ * LEGEND ( X' TL! l b '09O3 09O Iz l ^ 6b3. f 1 G&fj 1*6 rl~~ "[/L"" ~'I ~ "^ L"~~,L L " l L i(;! l i i /i \., j 166.'167 'zibesb (Z/I^N I*6 O. TL ' ^ il/ it..j ^ im, ' II66B 1/1*8*9, HtllCWt L J EibeTZ PATENTED LAND CROWN LAND SALE LEASES LOCATED LAND LICENSE OF OCCUPATION MINING RIGHTS ONLY SURFACE RIGHTS ONQT ROADS IMPROVED ROADS KINGS HIGHWAYS RAILWAYS POWER LINES MARSH OR MUSKEG C. S LOG- L.O. MRjO S.R.O. ^086^ Joy NOTES 00' Surface Rights Reservation around all Lakes and Rivers. All Timagarm island withdrawn from slaking under S*ct. 39 Sub 3 of the Mining Act -Q C- I9D6C.I9IT. File. 931 Vol? -! Summer Resorts Shown Thus And For Status Please Contact Dept.of Landt I 39P (IS399 For Flooding Of God Lake And bee Fue 6)9 ongbow Lake Phyllis Twp 3iMaSwaasa sa.a/aa STRATHCONA

9 CHAMBERS TWP II THE TOWNSHIP Cbiin BRIGGS DISTRICT OF NIPISSING MINING DIVISION SCALE: 1-INCH ^ O CHAINS LEGEND l 6383 l Northeast L- Arm ~ L O 6Cir.fl PATENTED LAND CROWN LAND SALE LEASES LOCATED LAND LICENSE OF OCCUPATION MINING RIGHTS ONLY SURFACE RIGHTS ONLY ROADS IMPROVED ROADS KING'S HIGHWAYS RAILWAYS POWER LINES MARSH OR MUSKEG.MINES./R IN V^ C. l. L. C. U C.S. Loc LO. M.RO. SR.O 6, 1 x [Se" 8S66 BSCO NOTES THIS TWP IS IN THE TIMAGAMI PROVINCIAL FOREST 00' Surface rights reservation around all lakes and rivers. Islands in Lake Timagami not open for staking. PLAN NO. ^/. 8 YATES TWP M.6I6 DEPARTMENT OF MINES - ONTARIO - 3iM0swMa STRATHCONA 10

10 Strathy Twp. M. 96. THE TOWNSHIP r-*\ - Ofx, v l v^\qirv\ t^lap STRATHCONA ^...l, )\,.roiv.r;r,/ '\**tn\l.-:'?\.,--skxn\,.-e ovr^*^ ^17 x- fam70 \,' L. - DISTRICT OF NIPISSING LARDER ^AKE MINING DIVISION TIMAGAMI SCALE: 1-INCH O CHAINS NORTHEAST LEGEJND **S/ L^^^ L L, l Y ^ /x 'v^j-^ j y(, y? - -f- ^- -\ /r~ ~TT r~j ~\,90V9 l ZoJ^T l. osc, oo-?090r l X? D93 ^ /88 l Z8OW,M H /^ J L 'L L,, L /l L,l ^ u. ^^yj&q! ' 0" 0xxK^79 1^/9.^'^'j! PATENTED L AND CROWN LAND SALE LEASES LOCATED LAND LICENSE OF OCCUPATION MINING RIGHTS ONLY SURFACE RIGHTS ONLY ROADS IMPROVED ROADS KING'S HIGHWAYS RAILWAYS POWER LINES MARSH OR MUSKEG MINES '"ri'i'-'-f-'-'v v *-JNJ-S!I T j C*MF- MASAKS -T l 180 j l '?00j l^7bj ^ ^ ^ j I L '! L I' ll ' l V-^ K?90^ i J. J. J-- iv~~ ~ir~"~~rl ~ i L i L r 1 T /r i L i...i "D --*-9 **pr*^jk NOTES 00' Surface; Rights Rt**rvatton around an Loktt and Rivtrs Sand and gravel. in this township reserved ur.ti! further notice For status of Island in this Twp and summer resort locations shown thus JH^^^TT"! please contact Dept of Lands S Foresis Islands In Lake Timagami Not Open for Staking l JKjmi -- L---L..^ DAT! UP 1 1 W fl Law Twp. M. 9 PLAN NO.9 DEPARTMENT OF MINES - ONTARIO - 3iMesweese STRATHCONA