BMq Quartzite: gray to white, medium grained; massive; > 90% quartz, < 3% hornblende, trace pyrite and garnet; apparent thickness up to 160 metres; MS=0.1-10.

BMm Amphibolite: salt and pepper, fine to medium grained; homogeneous, massive

to finely layered; 50-70% hornblende; MS=0.3-11. Unassigned Domain Ug Undifferentiated granitic rocks: Older component: light orange grey,

yellowish, medium grained; homogeneous, weakly to moderately foliated; 25% quartz, 15-20% biotite, common amphibolite inclusions; MS=1.6-15. Younger component: creamy white, coarse grained; massive to rarely foliated; 30-40% quartz; CI< 10; MS=0.3-9.4. Minor grey, coarse grained, massive to weakly foliated monzonite present as inclusions in older component; 7-10% quartz, 26% biotite, 4% hornblende; MS=2-9.5. Minor orange to brick red, medium- to coarse-grained hornblende quartz syenite.

SUPRACRUSTAL ROCKS AND DERIVED DIATEXITES

Murmac Bay Group

Mx Undifferentiated Murmac Bay Group rocks: interlayered grey, fine- to

medium-grained, finely-laminated, biotite-muscovite psammitic gneiss, 0.5-5% pyrite, 0-10% garnet, 0-7% round feldspar porphyroblasts up to 1 cm in diameter; massive, medium grained quartzite layers up to 1 m thick; schistose, garnet- and pyrite-rich rusty pelitic layers up to 2 m thick; up to 30% interlayered amphibolite; migmatization most commonly absent to moderate with < 50% leucosome; rare diatexites in contact with amphibolite; MS=0.2-30, avg=5.

Mm Amphibolite: salt and pepper, medium grained; massive and homogeneous,

occasional compositional layering; 40-50% hornblende, rare garnet < 2 cm in diameter with thin feldspar-hornblende reaction rims; coarse-grained feldspar-clinopyroxene veins common; MS=0.02-54, avg=3.8.

1 Magnetic Susceptibility in 10-3 SI units 2 Colour Index

Zp Pelitic gneiss and diatexite: light grey, cream to pink, salt and pepper weathering, medium to coarse grained; strongly foliated; commonly intrudes and contains sub-rounded blocks and fragments of fine- to medium-grained intermediate rock; medium- to course-grained amphibolite boudins and schlieren and quartz-rich layers are common; <20% garnet 0.5-1 cm in diameter, 0-5% sillimanite ± graphite; MS=0.1-153, avg=5.

ZMx Undifferentiated Murmac Bay Group rocks: Mafic volcanic component:

shades of black, grey, green; strong compositional layering, includes alternating fine- to coarse-grained amphibolite with up to 25% cm size garnet (CI=70-90), medium-grained feldspar-rich intermediate rock (CI=25-35), medium- to coarse-grained porphyritic rock, and medium-grained epidosite; MS=0.06-12.4, avg=3.4. Sedimentary component: light grey medium- to coarse-grained granitic garnet diatexite, medium- to coarse-grained leucocratic white feldspathic gneiss, garnet and magnetite rich iron formation, sillimanite-pyrite-graphite-rich psammopelite, and rare coarse grained 50 cm thick quartzite layers; MS=0.4-153.

Beaverlodge Domain Bsu Mylonitic rocks of unknown origin: dark brown to reddish tan, very fine

grained, cherty fracture surfaces; layered, locally ultramylonitic; unknown precursor; MS=0.8-5.4.

INTRUSIVE ROCKS

Blg Leucogranite: grey pink, medium to coarse grained; homogeneous, massive to

very weakly foliated; 30% quartz, 40-50% K-feldspar; CI=5-7; MS=1.1-5.2. Bgn Granitic gneiss: grey pink, medium grained; strongly foliated; 20-25% biotite;

MS=1.5-14.

SUPRACRUSTAL ROCKS AND DERIVED DIATEXITES

Murmac Bay Group BMx Undifferentiated Murmac Bay Group rocks: interlayered fine- to medium-

grained massive pyroxene-rich rock; purplish grey green medium-grained biotite and garnet rich rock; creamy grey coarse grained garnet diatexite; grey medium- to coarse-grained strongly- foliated biotite-muscovite psammopelite, 50% quartz, 30% biotite, 1-7% garnet; red feldspathic gneiss, 7-25% biotite, < 5% quartz, 0.5-3% pyrite; MS=0.3-14.

BMp Psammitic and pelitic rocks: grey, medium to coarse grained, foliated to

schistose quartzo-feldspathic gneiss layers up to 2 m thick dominate and contain up to 25% cm-scale garnet commonly replaced by micaceous material; muscovite locally abundant; interlayered with 20 cm to 6 m thick quartzite layers; grey-pink biotite-chlorite gneiss; minor 1-20 m thick rusty, schistose, biotite-chlorite-sillimanite-pyrite-graphite layers; up to 30% by volume foliation-parallel 2-5 mm thick quartz layers; MS=0.1-16.

Zemlak Domain

UNDIFFERENCIATED FAULT ROCKS Zsu Mylonitic rocks of unknown origin: hues of red, brown and green; very fine

grained, fresh surfaces saccharoidal to cherty; locally ultramylonitic; unknown precursor; low MS1; later cataclastic overprint with chloritic alteration.

Zsa Altered fault rocks of unknown origin: white to grey, ghost textures; strongly

cataclastic to mylonitic; feldspathic; metasomatic replacement product of amphibolite and other unknown precursors; >20% epidote in amphibolite precursor; low MS.

INTRUSIVE ROCKS

Zlg Leucogranite: pink to greyish pink, rarely red, medium to coarse grained;

massive to foliated to mylonitic; comprises variations with <5% mainly biotite and magnetite (MS=13-40), 5-8% pyribole (MS<20), and 35% equant smoky grey feldspar.

Zg Granitic gneiss: pink to greyish pink, medium to coarse grained; 5-40%

biotite, <8% hornblende, 0-5% magnetite, <3% garnet near contacts with unit Zp; MS=0.1-33, avg=8.3.

Zgd Granodioritic gneiss: dark grey, medium to coarse grained; wispy to streaky

texture; lineated with stretched clots of mafic minerals; hornblende ≥ biotite, rare orthopyroxene, 15-30% quartz; CI2=15-30; MS=0.5-44, avg=10.

Ztgd Tonalitic to granodioritic gneiss: grey to pinkish-grey, medium to coarse

grained; massive to layered; weakly foliated to ultramylonitic; tonalitic rocks comprise 10-25% hornblende and biotite and are locally intimately interlayered with amphibolites and granites, MS=10-37; granodioritic rocks contain up to 5% K-feldspar phenocrysts <5 cm long, MS=7-84; locally contains uniformly interlayered granitic pink medium- to coarse-grained leucosome and grey to dark grey, salt and pepper-textured, medium-grained, equigranular melanosome; <3% garnet near contacts with unit Zp.

Zlg-Ztgd Mixed units Zlg and Ztgd.

ROCKS OF UNKNOWN ORIGIN

Za Amphibolite: salt and pepper, medium to coarse grained; massive to

compositionally layered; local retrograde biotite along foliation planes, pyroxene present in coarse-grained veins and felsic layers in high strain zones, locally up to 20% garnet <3 cm in diameter; CI=35-80; MS=0.02-54, avg=6.

Zint Intermediate rocks: salt and pepper, fine to medium grained, typically

homogeneous and massive with local compositional cm- to m-scale layering; comprises tabular bodies <200 m thick commonly cut by coarse-grained feldspar-clinopyroxene veins; 15-25% hornblende, <7% biotite (locally up to 25%), <15% quartz; CI=15-35; MS=0.1-65, avg=14.

Ztgd-Zint Mixed units Ztgd and Zint.

SUPRACRUSTAL ROCKS AND DERIVED DIATEXITES

74N09

74N16

74O12

74O1374N15

74N08

74N10

74O0574O11

74N07 74O06

74O14

108°W

108°W

60°N60°N

28

22

25

32

72

36

65

78

82

45

44

51

47

80

85

41

50

41

70

75

51

38

30

89

45

54

35

75

65

45

56

4751

45

76

89

80

7460

45

62

60

60

2879

58

55

8489

30

40

13

33

72 80

82

65

78

45 5268

65

5041

5767

65

76 68

38

79

27

74

70

74

1568

78

8076

45

18

85

6040

Zlg

Ztgd

Zp

Ztgd

Ztgd

Zlg

Ztgd

Zg

Ztgd

Zint

Zlg-Ztgd

Zlg-Ztgd

Zg

Zg

Zlg-Ztgd

Zg

Zg

Zg

Zint

Zint

Zlg-Ztgd

Zg

Zp

Za

Zint

Zint

Zg

Zlg-Ztgd

Zint

Ztgd

Ztgd

Zp

Zp

Zp

Zp

Ztgd

Zlg

Zlg

Zlg

Zlg

Zlg

Zlg

Ztgd

Ztgd

Ztgd

Zint

RA2010-03

RA2010-02

RA2010-01Oshowy Lake

Hoidas Lake

Matheson Lake

341000

341000

342000

342000

343000

343000

344000

344000

345000

345000

346000

346000

347000

347000

348000

348000

349000

349000

6647

000

6647

000

6648

000

6648

000

6649

000

6649

000

6650

000

6650

000

6651

000

6651

000

6652

000

6652

000

6653

000

6653

000

107°45'W

107°45'W

107°50'W

107°50'W

Although the Ministry o f Energy and Resources has exercised all reasonable care in the compilation, interpretation, and production of this item, it is not possible to ensure total accuracy, and all persons that rely on the information contained herein do s o at their own risk. The Ministry of Energy and Resources and the Government of Saskatchewan do not accept liability for any errors, omissions or inaccuracies that may be included in or derived from, this item.

43

44

42

6087

70

8630

3242

65

82

80

80

75

66

82

48

69

60

49

67

657262

83

7572

79

70

7670

78

61

64

62

75

83

78

60

48

80

50

50

44

55 69

70

54

68

58

50

84

65

63

74

7168

70

48 65

65

85

48

Zsu

Ztgd

Ztgd

Zlg

Ztgd

Ztgd

ZMx

Za

ZMx

Za

Zlg

Zsu

Za

Zint

Zint

ZMx

Ztgd

Zlg

Ztgd

Zsu

Zsu

Ztgd

RA2010-18

RA2010-17

RA2010-16RA2010-15

306500

306500

307000

307000

307500

307500

308000

308000

308500

308500

309000

309000

6631

500

6631

500

6632

000

6632

000

6632

500

6632

500

6633

000

6633

000

6633

500

6633

500

108°25'W

108°25'W

59°47'N

59°47'N

20

36

60

68

7478

45

7750

5660

7954

7864

7170

71

75

6469

80

7672

67

78

48

63

40

7850

58

69

7660

66

6851 76

7162

7285

70

80

78

7563

6565

83

85

72

48

706860

67

64

86

7678

85

52

78

72 57

76

604939

42

59

43

7143

56

62

71

70

Ztgd

Za

Zgd

Zg

Zgd

Zlg

Zg

Zlg-Ztgd

Ztgd

Zgd

Zg

Zp

Zp

Ztgd

Zlg

Zp

Zlg-Ztgd

Zp

ZintZgd

Zp

Zlg-Ztgd

Zlg-Ztgd

Zint

Zint

Ztgd

Zgd

Za

Za

Ztgd

Ztgd

RA2010-18RA2010-17

RA2010-16RA2010-15

RA2010-14

RA2010-13RA2010-12

RA2010-11

RA2010-10

RA2010-09

RA2010-08 RA2010-07

RA2010-06

RA2010-05

307000

307000

308000

308000

309000

309000

310000

310000

311000

311000

312000

312000

313000

313000

314000

314000

315000

315000

316000

316000

6634

000

6634

000

6635

000

6635

000

6636

000

6636

000

6637

000

6637

000

6638

000

6638

000

108°20'W

108°20'W

108°25'W

108°25'W

59°50'N

59°50'N

8

29

11

31

31

12

43

46

22

17

76

72

5880

80

68

72

52

79 50

76

55

63

70

15

75

55

62 78 70

58

60

80

62

68

54

78

86

71

72

59

7571

76

55

59

81

80

60

75

89

72

80

70

58

56

54

56

7646

64

70

55

45

52

80

75

6254

49

54

43

79

50

31

4343

58

68

48

65

66

80

37

80

74

Ztgd

Ztgd

Mx

Zlg-Ztgd

Mx

Mx

Mx

Zlg

Za

Ug

Ug

Zint

ZlgZtgd-Zint

Za

Zsa

Zp

Mm

Za

Za Mm

Zlg-ZtgdZint

ZaZa

Zint

Zlg-Ztgd

Zlg-Ztgd

Ztgd

Zsa

RA2010-04

107°55'W

107°55'W

59°50'N

59°50'N

333000

333000

334000

334000

335000

335000

336000

336000

337000

337000

338000

338000

339000

339000

6635

000

6635

000

6636

000

6636

000

6637

000

6637

000

6638

000

6638

000

6639

000

6639

000

6640

000

6640

000

16

21

22

31

32

32

35

35

36

42

43

43

45

45

45

46

46

46

47

48

48

48

49

49

50

51

51

52

52

52

53

54

55

57

58

58

58

59

60

60

60

61

61

61

62 62

64

64

65

65

65

65

66

68

69

70

70

70

70

72

72

75

75 76

77

78

78

78

78

80

80

81

82

8284

86

88

55

65

78

46

32

78

Bmp

BMx

Bgn

Blg

BMq

BMq

BMqBSu

BMm

BMmBmp

Bmp

Bmp

Bmp

Bmp

Bmp

RA2010-30

RA2010-29

RA2010-28

RA2010-27

RA2010-26

RA2010-25

RA2010-24

RA2010-23RA2010-22

RA2010-21

RA2010-20

RA2010-19

Edworthy Lake

108°W

108°W

108°2'W

108°2'W

108°4'W

108°4'W

59°40'N

59°40'N

327500

327500

328000

328000

328500

328500

329000

329000

329500

329500

330000

330000

330500

330500

331000

331000

6618

000

6618

000

6618

500

6618

500

6619

000

6619

000

6619

500

6619

500

6620

000

6620

000

6620

500

6620

500

Easting Northing Total counts per second % K ppm U ppm Th

RA2010-01 343573 6649939 1150 6.3 3.7 181RA2010-02 345884 6650996 1300 5.7 8.5 164.5RA2010-03 345726 6653069 3800 5.0 6.1 674.5RA2010-04 336893 6639395 3200 7.0 123.3 201.7RA2010-05 313555.8 6637678 1200 4.6 3.6 218

2100 3.0 5.2 336.41500 7.5 28.4 118.41910 3.0 5.2 304.62840 3.0 11.2 475.21500 3.6 4.6 223.32800 2.5 19.9 500.18500 4.0 50.8 1895

RA2010-07 312980.1 6636684 1380 6.4 2.9 194.5RA2010-08 312715.5 6636666 1250 2.4 6.9 184.5RA2010-09 313716.5 6636405 2160 5.9 5.8 347.5RA2010-10 313051.3 6638313 1000 4.5 4.8 139.1RA2010-11 312964.2 6638225 1260 3.4 2.7 204.6RA2010-12 308774.9 6635649 1250 2.3 1.2 202.4RA2010-13 309899 6635747 4300 3.0 17.3 771.7RA2010-14 310031.4 6635864 2000 4.4 23.4 285.2

1530 3.8 34.9 170.11350 4.9 32.3 121.11080 4.7 18.1 120.81200 4.1 32.3 110.62100 4.7 95.2 103.5

RA2010-16 308221.3 6633453 1500 7.5 28.4 118.41000 5.4 17.1 88.82200 5.9 38.9 229.4

RA2010-18 307735.8 6633487 1510 5.9 54.4 64.7RA2010-19 329322.7 6618834 1550 3.6 5.2 242.2RA2010-20 329444.5 6618655 1260 6.5 5.5 174RA2010-21 329275.3 6618415 4550 3.2 19.5 815.7RA2010-22 329248.9 6618249 43600 >90 2038 >10000RA2010-23 329265.7 6618273 4200 4.1 29.6 690.9RA2010-24 329259.5 6618137 30900 57.9 759.9 >10000RA2010-25 329233 6618141 46600 >90 2262 >10000RA2010-26 327693.4 6618738 1800 3.6 8.7 298.5RA2010-27 329373.8 6619885 1830 5.0 5.7 289RA2010-28 329209.4 6618241 52000 >90% 4099 >10000RA2010-29 329213.2 6618222 23100 27.0 293 6131RA2010-30 329242.8 6618116 53500 >90% 4503 >10000

Spectrometry

Alce

s Lak

e

RA2010-15 307952.4 6633417

313080.2 6637556

6633515

Area Radiometric anomaly #

McNu

tt Lak

e

Location*

Osho

wy

Lake

RA2010-06

Ena L

ake (

Nadir

Bay

)

RA2010-17 307801.3

Zsu

Zsa

Zg

Zgd

Ztgd

Za

Zint

Zp

Ug

Ztgd-Zint

Bsu

Blg

Bgn

BMx

BMp

BMq

BMm

Mx

Mm

Zlg

Zlg-Ztgd

ZMx

Scale 1:10 0000 0.5 10.25

Kilometers0 0.40.2

Miles

Alces Lake

Symbols Geological contact

S1 foliation (dip unknown, inclined, vertical) S3 foliation (dip unknown, inclined, vertical) Dyke (inclined granitic, inclined mafic, unknown dip mafic) Stretching lineation (third generation, generation unknown)

Intersection lineation (third generation)

Minor S fold (third generation) Minor Z fold (third generation)

Minor symmetrical fold (third generation) Axial plane (third generation)

Fault or lineament (probable brittle-ductile fault) Shear zone Radiometric anomaly with ID # (see table) High strain zone Granulite facies metamorphic grade Glacial striae Sand Swamp Contour (50 feet) Reef

The area was mapped by Charles Normand, in the summer of 2010, with the assistance of Andrew Masurat and Devin Anderson. This map was printed from the geologist’s digital file. Geological data were processed using Microsoft Access, and ArcView 9.3 software. Base maps were compiled from CanVec 1:50 000 scale digital cartographic maps produced by Natural Resources Canada. Grid coordinates are NAD83 CSRS98 UTM zone 13. The map was processed overall using ArcView 9.3 software. The map is issued in a package with the Summary of Investigations 2010 Volume 2, Saskatchewan Geological Survey, and is available separately from http://www.er.gov.sk.ca/geo-reports. This map accompanies the following publication: Normand, C. (2010): Bedrock Geology of the Oshowy Lake – Buchanan Lake Area and Investigation of the REE Mineralization Potential in the Ena Lake, Bear Lake and Alces Lake Areas; in Summary of Investigations 2010 Volume 2, Saskatchewan Geological Survey, Sask. Ministry of Energy and Resources, Misc. Rep. 2010-4.2. This map may be referenced as: Normand, C. (2010): Bedrock Geology of the Oshowy Lake, Buchanan Lake, Ena Lake, Bear Lake and Alces Lake Areas (Parts of NTS 74N16, 74O13 and 74N09); 1:10 000 and 1:20 000 scale prelim. maps; with Summary of Investigations 2010, Volume 2, Saskatchewan Geological Survey, Sask. Ministry of Energy and Resources, Misc. Rep. 2010-4.2.

Legend

Bedrock Geology of the Oshowy Lake, Buchanan Lake, Ena Lake, Bear Lake and Alces Lake Areas (Parts of NTS 74N16, 74O13 and 74N0 9) at 1:10 000 and 1:20 000 scale Preliminary Geological Map (2010) by C. Normand

NAD83(CSRS98) UTM zone 13N

Lake Athabasca

Ena Lake

Catalogue Number 2010-4.2-(3)

12

3

4

5

Buchanan LakeScale 1:20 000

0 1 20.5Kilometres

0 10.5Miles

4

Oshowy LakeScale 1:20 000

0 1 20.5Kilometres

0 10.5Miles

3Ena LakeScale 1:20 000

0 1 20.5Kilometres

0 10.5Miles

1

5

Location Map

RA2010-01

(values recorded from a hand-held RS-230 spectrometer)Radioactive Anomalies

Ena Lake(Nadir Bay)

Bear Lake

McNutt

Lake

Alces Lake

Buchanan Lake

Bear LakeScale 1:10 000

0 0.5 10.25Kilometres

0 0.40.2Miles

2