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SURVEY PARAMETERS 79°57'23" 55' 50' 45' 40' 35' 30' 79°28'53" 580000 m 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 600000 m 01 02 03 04 05 06 07 08 09 10 11 12 13 614000 m 47°13'07" 47°11'48" AIRCRAFT Rory Type: Aerospatiale AS350BA (Block 1) The Lake Registration: C-GHSM Three Cliff Lake . P Type: Aerospatiale AS350B (Block 2) Sisters T Geoffrey IT Registration: C-FDYS Ontario Geological Survey IM Lake L 587 S . M IE P MAGNETOMETER 5229000 m Whitney L T o 5229000 m IL ST MAP 60 419 G E n Type: Geometrics caesium-vapour (Block 1) Lake B t re Silver Centre Scintrex CS2 caesium-vapour (Block 2) a l Sensitivity: 0.02 nT (Block 1) Gilbert 0.01 nT (Block 2) AIRBORNE MAGNETIC SURVEY Lake Sample interval: 10 readings per second 11 28 28 Sensor location: 15 m below aircraft (Block 1) Snare Fourclaim 0 m below aircraft (Block 2) Shaded colour image of the second vertical Lake Sensor separation: 13.2 m (Block 2) derivative of the gradient-enhanced residual Babcock Island NAVIGATION AND DATA ACQUISITION SYSTEMS magnetic field and Keating coefficients GPS receiver: Novatel OEM4-G2-3151W (Block 1) Pike Lake Rib Lake 27 27 Ashtec Glonass GG24 (Block 2) Lundy Lake GPS sample interval: 5 readings per second (Block 1) CLIFF LAKE Tooth 2 readings per second (Block 2) CONSERVATION RESERVE Lake Radar altimeter: Terra 3000/TRI-40 (Block 1) Thieving Bear Oxbow Honeywell AA 330 (Block 2) Lake Lake Radar sample interval: 5 readings per second (Block 1) Purchased Data James 26 26 Tyndall Lake 2 readings per second (Block 2) Lake Guidance system: Geotech (Block 1) Scale 1:50 000 PNAV 2100 (Block 2) Digital acquisition system: Geotech (Block 1) 1 km 0 1 2 km Fugro Helidas (Block 2)

25 25 BASE STATION Contact 10' Type: Geometrics caesium-vapour (Block 1) Lake R Scintrex CS2 caesium-vapour (Block 2) NTS References: 31 L/13, 14; 31 M/3, 4 Granite iv Magnetometer sample interval: 1 reading per second Lake Price's e GPS sample interval: 1 reading per second 10' Lake r McNab Creek Creek © Queen's Printer for Ontario, 2013. 24 Lake 24 SURVEY SPECIFICATIONS k e Survey date: December 16, 2005 to January 6, 2006 (Block 1) re This map is published with the permission of the Director, Black C February 10, 2006 to March 6, 2006 (Block 2) Net Little Duck Nominal aircraft terrain clearance: 80 m (Block 1) Ontario Geological Survey. Lake Lake Trout Lake Sandstone 30 m (Block 2) BANTING TP. Traverse line spacing: 50 m (Block 1) 23 23 75 m (Block 2) Little Mud Control line spacing: 500 m (Block 1) Owaissa Myth Little Lake 1000 m (Block 2) Lake Lake Mountain Traverse line direction: N44°E (Block 1) BEST TP. Lake North-South (Block 2) Watson's Control line direction: N134°E (Block 1) Petraut Lake 22 Duncan Lake Spruce 22 East-West (Block 2) Lake CASSELS TP. Lake Jackpine STRATHY TP. Lake CO-ORDINATE SYSTEM Projection: Universal Transverse Mercator Datum: NAD83 Hook Ferguson Lake Central meridian: 93°00' W (UTM zone 15N) 21 CHAMBERS TP. Lake Monty 21 Central scale factor: 0.9996 Net Bernice Owaissa Lake Lake False easting: 500 000 m Lake False northing: 0 m Lorrain Lake Data purchased from: Amador Gold Corp. (Block 1) (Banting–Chambers property) 20 20 Temex Resources Corp. (Block 2) (Cobalt area) ay Gorrie d ri Lake F Hansen MATABITCHUAN Lake Sauvé RIVER Location map 1 cm equals 15 km Pishabo CONSERVATION Lake RESERVE Lake 19 19 Kanichee Lake North Fourbass Lake LEGEND Alfreda DESCRIPTIVE NOTES Lake KEATING COEFFICIENTS

Positive correlation Negative correlation Introduction 18 18 90% This map was compiled from two proprietary airborne surveys Bogie Obashkong purchased by the Ontario Ministry of Northern Development Lake Lake and Mines. These surveys were flown using a Fugro Midas Copper 85% magnetic horizontal gradiometer-equipped aircraft and a Net Lake Lake Geotech helicopter-borne magnetometer-equipped aircraft. Maureen Lorrain The aircraft were also equipped with GPS navigation systems 17 Lake Lake 17 80% Gosselin and digital data acquisition systems. Lake 11 Arsenic Lake 75% Crash Second Vertical Derivative of the Magnetic Field Lake 16 16 The second vertical derivative values of the magnetic field were computed directly from the gridded residual magnetic Cooke Lake intensity data using a fast Fourier transform, combining the Young 05' SHADED IMAGE SUN ANGLE transfer functions of the second vertical derivative and a Lake 30 m Upward Continuation operator. The Upward Contin- Doris Lake uation was applied in order to attenuate unwanted high 15 15 Illumination Illumination frequencies enhanced by the derivative operator. 05' Blueberry Inclination = 45° Declination = 0° Lake Golden The shaded relief parameters are: Lake Illumination inclination: 45° Illumination declination: 0° Leroy O'Connor Lake 14 Lake 14 Using the means for all blocks, the magnetic declination on Link Lake January 30, 2006 for the centre of the survey area was 11.5°W and magnetic inclination was 73.3°N. Magnetic field strength Sutton N was 56 565 nT (calculated using IGRF). Lake SOUTH LORRAIN TP. Cooper Lake Temagami CASSELS TP. 13 13 Plan view Keating Correlation Coefficients STRATHY TP. CHAMBERS TP. ELDRIDGE TP. Possible kimberlite targets have been identified from the residual Turtle Lake W E magnetic intensity data, based on the identification of roughly circular anomalies. This procedure was automated by using a STRATHCONA TP. RIDDELL TP. known pattern-recognition technique (Keating 1995), which 12 Tetapaga Lake 12 consists of computing, over a moving window, a first-order BRIGGS TP. regression between a vertical cylinder model anomaly and the Bell Island Pingue S gridded magnetic data. Only the results where the absolute Lake value of the correlation coefficient is above a threshold of 75% O'Connor Pleasant Lake FINLAYSON were retained. The results are depicted as circular symbols, Pigot Island Sunrise scaled to reflect the correlation value. The most favourable Lake POINT Lake 11 PROVINCIAL 11 targets are those that exhibit a cluster of high amplitude solutions. PARK Collins Side view Lake Correlation coefficients with a negative value correspond to 45° reversely magnetized sources. It is important to be aware that Francis other magnetic sources may correlate well with the vertical Northeast Arm WHITE Lake cylinder model, whereas some kimberlite pipes of irregular (Lake Temagami) BEAR Shaded image is produced by applying an artificial sun illumination geometry may not. 10 Jessie FOREST 10 to the second vertical derivative of the magnetic field grid. Ferguson Lake CONSERVATION RESERVE The cylinder model parameters are as follows: Island Cylinder diameter: 200 m Cylinder length: infinite Command Lake Overburden thickness; 3.8 m Window size: 20 x 20 cells (400 m x 400 m) 09 Summit 09 SECOND VERTICAL DERIVATIVE Lakes Stewart Lake OF THE MAGNETIC FIELD GRID Karol Glasford Lake Lake SOURCES OF INFORMATION Hay Wagkich nanoteslas per metre² Lake So Lake (nT/m²) 08 u 08 th Base map information derived from the Ontario Land Information Warehouse, Land Information Ontario, Ontario Ministry of T e Natural Resources, scale 1:50 000. ta Boulton pa Maille ga Lake Lake 0.06660 Hidden Magnetic declination for the centre of the map area was approximately 11°27'W in 2013. 07 Lake 07 0.03580 Upper Broom Lowell Lake Cassels Twin 0.02220 Keating, P.B. 1995. A simple technique to identify magnetic Island Lake Lake anomalies due to kimberlite pipes; Exploration and Mining

R 0.01480 Geology, v.4, no.2, p.121-125. iv RABBIT 47°00'00" er LAKE 0.01000 Bowslaugh, E. 2006. Midas high-resolution magnetic geophysical 06 Iceland WEST 06 survey for Temex Resources Corp., Cobalt area, Ontario; Broom Lake CONSERVATION 0.00680 Maxam unpublished report by Fugro Airborne Surveys Corp. 47°00'00" Lake RESERVE Lake 0.00460 Orta, M. 2006. Report on a helicopter-borne time domain 0.00300 electromagnetic geophysical survey, Banting–Chambers property, Temagami, Ontario; unpublished report for Amador Gold Corp. 05 05 0.00200 Ross Lake 0.00120 Driftwood Lake Lower Twin 0.00060 CREDITS Creek Burwash Lake Lake 0.00020 04 04 Data acquisition, data compilation by Fugro Airborne Surveys Snowshoe ge Corp., Mississauga, Ontario for Temex Resources Corp., Lake rid 0.00000 er Herridge H Toronto, Ontario and by Geotech Limited, Aurora, Ontario for Lake Rabbit Lake HEBERT -0.00040 Amador Gold Corp., Vancouver, British Columbia Doherty RIDDELL TP. TP. ELDRIDGE TP. -0.00060 Data reprocessing and map production by CGI Controlled 03 03 STRATHCONA TP. Geophysics Inc., Thornhill, Ontario. BRIGGS TP. ASKIN TP. BURNABY -0.00120 TP. HARTLE TP. -0.00180 Contract management, base maps and map surrounds by the YATES TP. LAW TP. Ontario Ministry of Northern Development and Mines, Sudbury, -0.00240 Ontario. 02 02 -0.00340 To enable the rapid dissemination of information, this map has not received a technical edit. Every possible effort has been Olier -0.00440 Lake Wilson Lake made to ensure the accuracy of the information presented; -0.00620 however, the Ontario Ministry of Northern Development and Mines does not assume liability for any errors that may occur. 01 01 -0.00800 Users may wish to verify critical information. North -0.01040 Corresponding digital data for this survey are available from the Milne following Ontario Geological Survey publication: Lake -0.01380 Moosehead Ontario Geological Survey 2013. Ontario airborne geophysical Reuben Lake -0.01820 5200000 m Denedus Lake 5200000 m surveys, magnetic and electromagnetic data, grid and profile Lake 11 -0.02480 data (ASCII and Geosoft® formats) and vector data, Latchford area—Purchased data; Ontario Geological Survey, Soutwest -0.03580 Geophysical Data Set 1242. Greenlaw Willis Bay Lake -0.05960 Lake The geophysical data on this map were purchased from the Christy Lake private sector. The original data acquisition was neither 99 Hornet Salvation 99 Brophy Lake R Lake supervised by the Ontario Geological Survey (OGS) nor carried Lake ab Dennis out to OGS technical specifications. However, the purchased bi t C Lake data do meet a pre-defined valuation criteria set out by the OGS. ree k Some quality assurance and quality control checks have been Pig Lake k e

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Lake C 5198000 m 5198000 m

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n A Information from this publication may be quoted if credit is given. It is recommended that reference be made in the following form:

46°55'19" 46°55'00" Ontario Geological Survey 2013. Airborne magnetic survey, 580000 m 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 600000 m 01 02 03 04 05 06 07 08 09 10 11 12 13 614000 m Users of OGS products are encouraged to contact those shaded colour image of the second vertical derivative of the 79°57'44" 55' 50' 45' 40' 35' 30' 79°29'23" Aboriginal communities whose traditional territories may be gradient-enhanced residual magnetic field and Keating located in the mineral exploration area to discuss their project. coefficients, Latchford area—Purchased data; Ontario Geological Survey, Map 60 419, scale 1:50 000.