THESE TERMS GOVERN YOUR USE OF THIS DOCUMENT

Your use of this Ontario Geological Survey document (the “Content”) is governed by the terms set out on this page (“Terms of Use”). By downloading this Content, you (the

“User”) have accepted, and have agreed to be bound by, the Terms of Use.

Content: This Content is offered by the Province of Ontario’s Ministry of Northern Development and Mines (MNDM) as a public service, on an “as-is” basis. Recommendations and statements of opinion expressed in the Content are those of the author or authors and are not to be construed as statement of government policy. You are solely responsible for your use of the Content. You should not rely on the Content for legal advice nor as authoritative in your particular circumstances. Users should verify the accuracy and applicability of any Content before acting on it. MNDM does not guarantee, or make any warranty express or implied, that the Content is current, accurate, complete or reliable. MNDM is not responsible for any damage however caused, which results, directly or indirectly, from your use of the Content. MNDM assumes no legal liability or responsibility for the Content whatsoever.

Links to Other Web Sites: This Content may contain links, to Web sites that are not operated by MNDM. Linked Web sites may not be available in French. MNDM neither endorses nor assumes any responsibility for the safety, accuracy or availability of linked Web sites or the information contained on them. The linked Web sites, their operation and content are the responsibility of the person or entity for which they were created or maintained (the “Owner”). Both your use of a linked Web site, and your right to use or reproduce information or materials from a linked Web site, are subject to the terms of use governing that particular Web site. Any comments or inquiries regarding a linked Web site must be directed to its Owner.

Copyright: Canadian and international intellectual property laws protect the Content. Unless otherwise indicated, copyright is held by the Queen’s Printer for Ontario.

It is recommended that reference to the Content be made in the following form:

Ontario Geological Survey 2015. Airborne magnetic and gamma-ray spectrometric surveys, ternary radioelement image, Lac des Milles Lacs–Nagagami Lake area; Ontario Geological Survey, Map 82 731, scale 1:50 000.

Use and Reproduction of Content: The Content may be used and reproduced only in accordance with applicable intellectual property laws. Non-commercial use of unsubstantial excerpts of the Content is permitted provided that appropriate credit is given and Crown copyright is acknowledged. Any substantial reproduction of the Content or any commercial use of all or part of the Content is prohibited without the prior written permission of MNDM. Substantial reproduction includes the reproduction of any illustration or figure, such as, but not limited to graphs, charts and maps. Commercial use includes commercial distribution of the Content, the reproduction of multiple copies of the Content for any purpose whether or not commercial, use of the Content in commercial publications, and the creation of value-added products using the Content.

Contact:

FOR FURTHER

INFORMATION ON PLEASE CONTACT: BY TELEPHONE: BY E-MAIL:

The Reproduction of the EIP or Content

MNDM Publication Services

Local: (705) 670-5691 Toll-Free: 1-888-415-9845, ext. 5691

(inside Canada, United States) Pubsales.ndm@ontario.ca

The Purchase of MNDM Publications

MNDM Publication Sales

Local: (705) 670-5691 Toll-Free: 1-888-415-9845, ext. 5691

(inside Canada, United States) Pubsales.ndm@ontario.ca

Crown Copyright Queen’s Printer Local: (416) 326-2678 Toll-Free: 1-800-668-9938

(inside Canada, United States) Copyright@gov.on.ca

0.45

0.60

0.72

0.83

0.93

1.03

1.13

1.24

1.35

1.49

1.65

1.86

2.17

2.81

530000 m 54 55 560000 m

5430000 m

44

45

46

5470000 m

0.50

0.92

1.44

1.90

2.26

2.58

2.90

3.22

3.61

4.07

4.63

5.34

6.27

7.99

530000 m 54 55 560000 m

5430000 m

44

45

46

5470000 m

0.16

0.27

0.41

0.53

0.63

0.72

0.80

0.88

0.97

1.08

1.19

1.32

1.49

1.85

530000 m 54 55 560000 m

5430000 m

44

45

46

5470000 m

6.3

10.1

14.5

18.3

21.1

23.6

26.1

28.6

31.5

34.5

38.4

43.2

49.2

60.2

530000 m 54 55 560000 m

5430000 m

44

45

46

5470000 m

<L16300<L16300

L16310>L16310>

<L16320<L16320

L16330>L16330>

<L16340<L16340

L16350>L16350>

<L16360<L16360

L16370>L16370>

<L16380<L16380

L16390>L16390>

<L16400<L16400

L16410>L16410>

<L16420<L16420

L16430>L16430>

<L16440<L16440

L16450>L16450>

<L16460<L16460

L16470>L16470>

<L16480<L16480

L16490>L16490>

<L16500<L16500

L16510>L16510>

<L16520<L16520

L16530>L16530>

<L16540<L16540

L16550>L16550>

<L16560<L16560

L16570>L16570>

<L16580<L16580

L16590>L16590>

<L16600<L16600

L16610>L16610>

<L16620<L16620

L16630>L16630>

<L16640<L16640

L16650>L16650>

<L16660<L16660

L16670>L16670>

<L16680<L16680

L16690>L16690>

<L16700<L16700

L16710>L16710>

<L16720<L16720

L16730>L16730>

<L16740<L16740

L16750>L16750>

<L16760<L16760

L16770>L16770>

<L16780<L16780

L16790>L16790>

<L16800<L16800

L16810>L16810>

<L16820<L16820

L16830>L16830>

<L16840<L16840

L16850>L16850>

<L16860<L16860

L16870>L16870>

<L16880<L16880

L16890>L16890>

<L16900<L16900

L16910>L16910>

<L16920<L16920

L16930>L16930>

<L16940<L16940

L16950>L16950>

<L16960<L16960

L16970>L16970>

<L16980<L16980

L16990>L16990>

<L17000<L17000

L17010>L17010>

<L17020<L17020

L17030>L17030>

<L17040<L17040

L17050>L17050>

<L17060<L17060

<L17070<L17070

L17080>L17080>

L17090>L17090>

<L17100<L17100

L17110>L17110>

<L17120<L17120

L17130>L17130>

<L17140<L17140

L17150>L17150>

<L17160<L17160

L17170>L17170>

<L17180<L17180

L17190>L17190>

<L17200<L17200

L17210>L17210>

<L17220<L17220

L17230>L17230>

<L17240<L17240

L17250>L17250>

<L17260<L17260

L17270>L17270>

<L17280<L17280

L17290>L17290>

<L17300<L17300

L17310>L17310>

<L17320<L17320

L17330>L17330>

<L17340<L17340

L17350>L17350>

<L17360<L17360

L17370>L17370>

<L17380<L17380

L17390>L17390>

<L17400<L17400

L17410>L17410>

<L17420<L17420

L17430>L17430>

<L17440<L17440

L17450>L17450>

<L17460<L17460

L17470>L17470>

<L17480<L17480

L17490>L17490>

<L17500<L17500

L17510>L17510>

<L17520<L17520

L17530>L17530>

<L17540<L17540

L17550>L17550>

<L17560<L17560

L17570>L17570>

<L17580<L17580

L17590>L17590>

L17600>L17600>

<L17610<L17610

L17620>L17620>

<L17630<L17630

L17640>L17640>

<L17650<L17650

L17660>L17660>

<L17670<L17670

L17680>L17680>

<L17690<L17690

L17700>L17700>

<L17710<L17710

L17720>L17720>

<L17730<L17730

L17740>L17740>

<L17750<L17750

L17760>L17760>

<L17770<L17770

L17780>L17780>

<L17790<L17790

L17800>L17800>

<L17810<L17810

L17820>L17820>

<L17830<L17830

L17840>L17840>

<L17850<L17850

L17860>L17860>

<L17870<L17870

L17880>L17880>

<L17890<L17890

L17900>L17900>

<L17910<L17910

L17920>L17920>

<L17930<L17930

L17940>L17940>

<L17950<L17950

L17960>L17960>

<L17970<L17970

L17980>L17980>

<L17990<L17990

L18000>L18000>

<L 18010<L18010

L18020>L18020>

<L18030<L18030

L 18040>L18040>

<L18050<L18050

L18 060>L18060>

<L180 70<L1807 0

L18080>L18080>

<L18090<L18090

L18100>L18100>

<L18110<L18110

L18120>L18120>

<L18130<L18130

L18140>L18140>

T80413> T80413>

<T80423 <T80423

T80433> T80433>

<T80443 <T80443

T80453> T80453>

<T80463 <T80463

T80473> T80473>

<T80483 <T80483

T80496> T80496>

<T80506 <T80506

T80516> T80516>

T80526> T80526>

<T80536 <T80536

T80546> T80546>

<T80556 <T80556

T80566> T80566>

<T80579 <T80579

T80586> T80586>

<T80596 <T80596

T80606> T80606>

<T90200

<T90200

<T90210

<T90210

T90220>

T90220>

6690066 960

6 702067080

6714067200

6804068100

6816068220

68 28068340

684006 8580

6 864068700

6876068820

68880

6972069780

69 84 06 9900

6996070020

7008070140

7026070 320

703807 0440

70 50070560

70620

7146071520

7 158071640

7170071760

71820

719407 2000

7206072120

7218072240

7314073200

7326073320

7338073440

73500

7362073680

7374073 800

7386073920

73980

7482074880

7494075000

75 06 075 12 0

75180

7530075360

7542075480

7554075600

75660

7650076560

7 662076680

7 674076800

7698077040

7710077160

77 22077280

4 860048660

4872048780

4884048900

48960

4908049140

49200

4926049320

4938049440

5028050340

5040050460

5052050580

5076050820

5088050940

5100051060

51 90 051 960

5202052080

5214052200

52260

5244052500

5256052620

5268052740

5358053640

5370053760

538205 3880

53940

5406054120

5 418054240

5 430054360

54 420

5526055320

5538055440

5550055560

55620

557405 5800

5586055920

5598056040

5 688056940

5700057060

57 12057180

57240

5736057420

5 748057540

576005 7660

57720

5856058620

5868058740

5880058860

58920

5904059100

5916059220

5928059340

59 40 0

6024060300

60 36060420

60 48060540

60600

6072060780

6084060900

6096061020

61080

6192061980

6204062100

62 16062220

62280

6240062460

625206 2 58 0

6 264062700

6360063660

6 372063 780

6384063900

6 408064140

6420064260

643206 4380

6522065280

6 534065400

6 54606 5 52 0

65580

65 76 065 820

6588065940

6600066060

669606 7020

6708067140

6720067260

6744067500

6756067 620

6768067740

6 864068700

6876068820

6888068 940

6906069120

6 918069240

693006 9360

6 9420

8352083580

8364083700

8376083820

83880

8 406084 12 0

8418084240

8430084360

5052050580

5064050700

5076050820

50880

5106051 12 0

51 18 051 240

5130051360

5 226052320

5238052 440

5250052560

5 262052 680

5274052800

5292052 980

5304053100

5316053220

5328053340

5340053 46 0

54 36 054420

5448054540

54 60 054660

5472054780

54840

5502055080

55 14055200

5526055320

5538055440

55500

56 40 056460

5652056580

5664056700

5676056820

5688056940

57 06 057120

5718057240

573005 7 36 0

574205 7480

5754057600

5850058560

58 62 058680

5874058800

5886058920

5 8980

591005 9160

5922059280

5934059400

5946059520

5958059640

6054060 60 0

606606 0720

6078 060840

6090060 960

61020

61 20061 260

6132061380

6144061500

6156061620

61680 6258062640

6270062760

6 2 82 062880

629406 3 00 0

63060

6324063 300

6 336063420

6348063 54 0

6 360063660

63720

6162061680

6174061800

6186061 92 0

6198062040

6 222062280

623406 2400

6246062520

625806 2 64 0

62700

6360063660

637206 3780

6384063900

6 396064020

6414064200

64 26 064320

6438064440

64 50064560

64620

6552065580

6564065700

6 576065820

6588065940

66000

6618066240

663006 6360

6 642066480

665406 6 60 0

675006 7560

6762067680

6 774067800

67 86 067920

67980

68 10068160

6822068280

6 834068400

684606 8520

68580

6948069540

6960069660

6972069780

6984069900

69960

7008070140

70 20070260

70 32070380

7044070500

7 0560

71 46071520

7158071640

7170071760

7182071880

720007 2060

7212072 180

7224072300

7 236072420

72480

7338073440

7350073560

7362073680

7374073800

73 98 074040

74 10074 160

7422074280

7434074 400

7536075420

7548075540

7560075660

7 572075780

7596076020

7 608076140

762007 6260

76 32076380

7728077340

7740077460

7752077580

7764077700

7788077940

7800078060

7812078180

7824078300

7920079260

7932079 380

7944079500

7956079620

7980079860

7992079980

8004080100

8 016080220

8112081180

8124081300

8136081420

8148081540

8 1 72 081780

8184081900

8196082020

8208082140

68 16 06 8220

6828068340

6840068460

68 5206 8580

6756067620

6 768067740

6780067860

6792067980

68040

6960069660

69 72069780

6 984069900

6996070020

70 20 070260

7 0 32 070 380

7044070500

70560

7158071640

71 70 071760

7182071880

7194072000

72060

7218072240

7230072360

72 42 072480

7 254072600

7362073 680

7374073800

7386073920

7398074040

74 22 074280

74 34 074400

7446074 520

74580

7560075660

7572075780

7584075900

759607 6020

7620076260

7632076380

7644076500

76560

7758077640

7770077760

7782077880

7794078000

7812078180

7 824078300

7836078420

7848078540

7956079620

7968079740

7980079860

7992079980

8010080160

8022080280

80 34 080400

8046080520

81 54 081600

8166081720

81 78 081840

81900

8196082080

8214082200

8 226082 32 0

8238082440

7350073560

7362073680

7374073800

73 86 073920

74 04 074100

7416074220

7428074 340

7440074460

7542075480

7554075600

7566075720

7578075840

760207 6080

7614076 20 0

7 626076320

76380

7734077400

7746077520

7758077640

7770077 760

7788077940

7800078060

7812078180

7824078300

7926079320

7938079440

7950079560

7 962079680

798007 9860

7 992079980

8004080100

8016080220

8124081300

813608 1420

8 148081 540

81600

817208 1780

8184081900

8196082020

82080

8310083160

8322083280

8334083400

83460

8 364083700

8376083820

8388083940

84000

6444064500

645606 4620

6468064740

64800

6498065040

6510065 160

652206 5280

653406 5400

6642066480

665406 6600

6666066720

66780

6690066960

6 702067080

67 14 067200

6726067320

6834068400

6846068520

6858068640

68 700

6 8820

6888068 940

6900069060

6912069180

69240

7026070320

7038070440

7 050070560

70620

708007 0860

7092070980

710407 1100

71160

721807 2240

7230072 360

7242072480

72540

7266072720

72 78072840

7290072960

7302073080

7410074160

74220

7 440074460

74520

756007 5660

7 5720

75 90 075 960

76020

7704077100

7716077220

7734077400

77460

7854078600

78660

7878078840

78 90 07 8960

7998080040

80100

8028080340

80400

8142081480

81540

8172081780

81840

8 286082920

82980

8316083220

83280

8430084360

84420

619806 2040

62100

6222062280

62340

6 348063 54 0

63600

6 372063780

63840

64 92 064980

6 5040

6516065220

65280

6636066 42 0

66480

6666066720

6786067920

6 7980

68 10 068160

68220

6 93606 9420

6960069660 70800

70860

7104071100

72 24072300

72360

7 248072 540

72600

7374073800

73 92 07 3980

74 040

7518075240

7536075420

75 48 0

6516065220

65 40065460

6666066720

6690066960

6816068220

6834068400

691206 9180

69 360

7062070680

7 0740

7086070920

7218072240

7236072420

7 368073740

73920

75240

7542075480

7668076 740

76 920

78240

78420

79740

79920

81240

8136081420

82 680

8 286075180

75360

7668076740

76980

77040

78360

78540

69780

69960 71220

47520 47580 47640 47700 47760 47820 47880 47940

4818048240483004836048420484804854048600

50280 50340 50400 50460 50520 50580 50640 50700 50760

5088050940510005106051120511805124051300

52980 53040 53100 53160

53220

53280 53340

534605352053580536405370053760

55440 55500 55560 55620 55680 55740

5586055920559805604056100

57780 57840 57900 57960 58020

58200582605832058380

60060 60120 60180 60240 60300

49140 49200 49260 49320 49380

6066060720607806084060900

62700

62760 62820 62880 62940

630606312063180

6324063300

65340 65400 65460

504605052050580

50220

50280

50040

80671

79740

79800

79860

79920

80340

80400

80460

80520

67800

67860

GRENVILLE TP.

DAVIES TP.

SedumLake

RouteLake

MitcheleLake Killala Lake

Little

Pic Rive

r

Vein Creek

Vein Lake

SandspitLake

WellwoodLake

CornishLake

SolannLake

Kagiano

Pic

Rive

r

River

HelianthusLake

KagianoLake

Little P

ic Rive

rKagiano Rive

r

Kagiano Lake

BoomerangLake

Baht Lake

Eros Lake

Eris Lake

CitellusLake

HatleyLake

NepetaLake

WaboosekonLake

Kagiano River

35' 30' 25' 20' 15' 10'

20'

15'

10'

05'

10'15'20'25'30'35'

05'

10'

15'

20'

86°36'01"49°23'27"

86°05'26"49°23'17"

49°01'10"

86°05'51"86°36'12"

49°01'20"

5431000 m 5431000 m

32 32

33 33

34 34

35 35

36 36

37 37

38 38

39 39

40 40

41 41

42 42

43 43

44 44

45 45

46 46

47 47

48 48

49 49

50 50

51 51

52 52

53 53

54 54

55 55

56 56

57 57

58 58

59 59

60 60

61 61

62 62

63 63

64 64

65 65

66 66

67 67

68 68

69 69

5470000 m 5470000 m

565000 m

565000 m

64

64

63

63

62

62

61

61

60

60

59

59

58

58

57

57

56

56

55

55

54

54

53

53

52

52

51

51

50

50

49

49

48

48

47

47

46

46

45

45

44

44

43

43

42

42

41

41

40

40

39

39

38

38

37

37

36

36

35

35

34

34

33

33

32

32

31

31

530000 m

530000 m

eU (equivalent uranium, ppm)

eTh (equivalent thorium, ppm)

K (potassium concentration, %)

TOTAL COUNT (natural air absorbed dose rate, nGy per hour)

U.S.A.

ThunderBay

Geraldton

Marathon

LakeNipigon

Lake Superior

11

17

11

17

85°86°87°88°89°90°91°

49°

50°

48°

51°

82715 8271782716 82718 82719827208272182724 82727

82723 82726 82729

82722 82725 82728 82730

82731

82732

82733

82734

82735

82736

82737

Location map 1 cm equals 35 km

2 km01 km 1

NTS References: 42 E/1, 2, 7, 8

© Queen's Printer for Ontario, 2015.

This map is published with the permission of the Director,Ontario Geological Survey.

Scale 1:50 000

TERNARY RADIOELEMENT IMAGE

CREDITS

Data acquisition, data compilation and map production byGoldak Airborne Surveys, Saskatoon, Saskatchewan.

Project management and quality assurance by Paterson,Grant and Watson Limited, Toronto, Ontario.

Contract management, base maps and map surrounds by theMinistry of Northern Development and Mines, Sudbury, Ontario.

Every possible effort has been made to ensure the accuracy ofthe information presented on this map; however, the Ministry ofNorthern Development and Mines does not assume liability forerrors that may occur. Users should verify critical information.

Corresponding digital data for this survey are available fromthe following Ontario Geological Survey publication:

Ontario Geological Survey 2015. Ontario airborne geophysicalsurveys, magnetic and gamma-ray spectrometric data, grid andprofile data (ASCII format) and vector data, Lac des Mille Lacs–Nagagami Lake area; Ontario Geological Survey, GeophysicalData Set 1078a.

Ontario Geological Survey 2015. Ontario airborne geophysicalsurveys, magnetic and gamma-ray spectrometric data, grid andprofile data (Geosoft® format) and vector data, Lac des MilleLacs–Nagagami Lake area; Ontario Geological Survey,Geophysical Data Set 1078b.

Issued 2015.

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

Ontario Geological Survey 2015. Airborne magnetic and gamma-ray spectrometric surveys, ternary radioelement image, Lac desMille Lacs–Nagagami Lake area; Ontario Geological Survey,Map 82 731, scale 1:50 000.

SOURCES OF INFORMATION

Base map information derived from the Land Information OntarioData Warehouse, Land Information Ontario, Ministry of NaturalResources and Forestry, scale 1:50 000.

Magnetic declination for the centre of the map area wasapproximately 6°35'W in 2015.

Users of OGS products are encouraged to contact thoseAboriginal communities whose traditional territories may belocated in the mineral exploration area to discuss their project.

DESCRIPTIVE NOTES

AIRCRAFTType: Piper Navajo PA-31Registration: C-GJBB, C-GJBG

MAGNETOMETERType: Geometrics cesium-vapourSensitivity: 0.005 nTNoise level: 0.05 nTSample interval: 10 readings per secondSensor locations: wingtips (transverse separation is 14.78 m)

tail stinger (longitudinal separation is 9.75 m)Compensation: RMS AADCIIData Acquisition: GEDAS

GAMMA-RAY SPECTROMETER SYSTEMType: Radiation Solutions RS-500Downward-looking crystal volume: 33.6 LUpward-looking crystal volume: 8.4 LNumber of channels: 1024Sample interval: 1 reading per secondSensor location: near centre of aircraftPotassium window: 1370 to 1570 keVUranium window: 1660 to 1860 keVThorium window: 2410 to 2810 keVTotal count window: 410 to 2810 keV

NAVIGATION SYSTEMGPS receiver: Novatel OEM4 ProPakGPS sample interval: 1 reading per secondRadar altimeter: Thompson CFS 530ARadar sample interval: 10 readings per secondBarometric altimeter: Setra 270Barometric sample interval: 10 readings per secondVideo flight path camera: Panasonic GPKR402 HRSVNavigation-Acquisition: GEDAS

BASE STATIONType: GEM System GSM-19WMagnetometer sample interval: 1 reading per secondGPS sample interval: 1 reading per second

SURVEY SPECIFICATIONSSurvey date: July 18 to October 29, 2014Nominal aircraft terrain clearance: 100 mTraverse line spacing: 200 mControl line spacing: 2000 mTraverse line direction: 0 degreesControl line direction: 90 degrees

CO-ORDINATE SYSTEMProjection: Universal Transverse MercatorDatum: NAD83Central meridian: 87°W (UTM zone 16N)Central scale factor: 0.9996False easting: 500 mFalse northing: 0 m

SURVEY PARAMETERS

Introduction

The data comprising this map are derived from the results of anairborne magnetic and gamma-ray spectrometric survey carriedout by Goldak Airborne Surveys. The survey was flown using 2Piper PA-31 Navajo aircraft. The aircraft were each equippedwith 3 Geometrics magnetic sensors, Radiation Solutionsgamma-ray spectrometers, GPS navigation systems and digitaldata acquisition systems.

Ternary Radioelement Map

The ternary radioelement image was prepared by modulatingthe red, green, and blue (RGB) components of the colourspectrum using the normalized radioelement counts ofpotassium (K), equivalent thorium (eTh) and equivalent uranium(eU), respectively. The RGB image was then combined withtotal count (TC) mapped as intensity. Brighter areas displayzones of higher total count. The total count tends to outline unitboundaries and structure.

The gamma-ray spectrometer response represents radioactivityemanating from the upper 30 cm of the earth's surface. Thesurface concentrations are influenced by varying amounts ofoutcrop, overburden, vegetation cover, soil moisture andsurface water.

Ontario Geological Survey

MAP 82 731

AIRBORNE MAGNETIC ANDGAMMA-RAY SPECTROMETRIC

SURVEYS

Ternary radioelement image

LAC DES MILLE LACS–NAGAGAMI LAKE AREA

LEGEND

FLIGHT LINE INFORMATION

Line directionLine number

>L12

701

1230 Fiducial

U

K Th