rpt on lithogeochem sampling prog eyapamikama lk …

OCT-14-2002 15=24 P.25X42

243 46

REPORT ON A

LITHOGEOCHEMICAL SAMPLING PROGRAM

on the

EYAPAMIKAMA LAKE PROPERTY

Patricia Mining Division

Province of Ontario, Canada

NTS 53B/14 and 15

Brace A. Youngman

Northern Dynasty Minerals Ltd.

October, 2002

53B14NE2002 2.24346

DCT 14 '02 18=16

KEEYASK LAKE 010

PPGE.25

OCT-14-2002 IS:24 P.26/42

TABLE OF CONTENTS** '" - ,.". "-

1.0 INTRODUCTION.............................................................................................................!

2.0 LITHOGEOCHEMICAL SAMPLING AND RESULTS.......................................................1

3.0 CONCLUSIONS.............................................................................................................^

4.0 REFERENCES........................................................................................................-.-...^

LIST OF FIGURES:

Figure 1 - Location Of Drill Holes Used For Lithogeochemical Analyses .....................................4

APPENDICES:

Appendix 1 - Geochemical Analysis Results . .............................................................................5Appendix 2 - Geochemical Lab Report ...................................................................................13

11

OCT 14 '02 18:16 PfiGE.26

OCT-14-2002 15:24 P.27/42

1.0 Introduction:

The Eyapamikama Lake property is located in northwestern Ontario, approximately 170 km north of Pickle Lake, Ontario. The center of the claim group is situated at 9^06^ longitude and 52 058.5'N latitude on mapsheets NTS 53B/14 and 15. The property is owned by Northern Dynasty Minerals Ltd. and Energold Minerals me. Access to the property is provided by float plane from the village of Weagamow, home to the North Caribou Lake First Nation.

This report describes a program of lithogeochemical sampling completed during September and October, 2002. It was designed to study the type and degree of alteration associated with the polymetallic mineralization present on the property, based upon concentrations of major, minor, and trace elements. It represents a follow-up to an initial program of lithogeochemical sampling completed in the fall of 2000, in which 21 samples were collected from 3 drill holes. The 2002 sampling program involved the collection of an additional 87 samples taken from 7 drill holes situated along a 2.3 km strike length of the mineralized horizon. All drill holes were completed in 1987 and 1988, with the drill core stored on the property. This report is largely derived from the observations made and descriptions provided by Robert J. Tremblay, B.Se. Geologist, who designed and supervised the sampling program (Tremblay, 2002).

2.0 Lithogeochemical Sampling and Results:

Eight-seven core samples were collected for whole rock analysis from the following drill holes: 87-12 (9 samples), 87-13 (13 samples), 87-23 (9 samples), 87-25 (13 samples), 88-2 (18 samples), 88-3 (12 samples) and 88-4 (13 samples). The location of these three drill holes is shown on Figure 1. Samples were collected at many levels across the stratigraphic package in all drill holes. Care was taken to select material displaying little alteration, shearing, and mineralization. Samples were submitted to ALS Chemex Laboratories in Thunder Bay, Ontario for whole rock analysis by XRF-Wavelength Dispersive Method, with a lithium borate fusion sample preparation. Geochemical results together with descriptions of sampled intervals are included in Appendix l, while the geochemical laboratory report is attached in Appendix 2.

The geochemical results indicate that the volcanic package varies from mafic to felsic in composition. Though spiky variations in concentrations of certain elements occur throughout most drill sections studied, they do not significantly disturb the general alteration pattern. The present study indicates that hydrothermal alteration associated with volcanic venting occurs over the entire 2.3 km strike length of the target horizon. The following general trends are indicated (Tremblay, 2002):

OCT 14 '02 18=16 PAGE.27

OCT-14-2002 15=25 P.28/42

- Sodium (Na2O) concentrations display a clear and sustained depletion in all drill holes tested over the entire strike length of the target horizon, with the exception of drill hole 88-2. In this hole, depletion is.widespread but very irregular, which may be attributed to the disturbance of the stratigraphic package related to a possible fold closure situated to the immediate west.

-Calcium (CaO) depletion is more widespread and consistent west of the proposed fold nose, in holes 87-25, 87-12 and 87-13. To the east of this structure, calcium concentrations are generally more elevated with erratic depletion.

- Potassium (K20) concentrations are generally elevated over the entire strike length of the stratigraphic package. Enrichment is less intense and consistent in holes 88-2, 88-3 and 88-4.

- Magnesium (MgO) concentrations are wide ranging, with enrichment of intermediate to felsic rocks indicated in many samples throughout the entire strike length of the target horizon.

- Strontium (SrO) concentrations are generally low over the entire length of the target horizon. An analysis for elemental strontium would be preferable to properly evaluate this depletion.

- Aluminum (A12O3) concentrations are locally and erratically elevated along the entire strike length of the target horizon.

3.0 Conclusions:

The overall geochemical pattern obtained from the 2002 core sampling program supports the conclusion of the 2000 program that base metal mineralization and associated alteration on the property are the result of syn-volcanic activity. Geochemical results from the 2002 program indicate that hydrothermal alteration extends over the entire 2.3 km strike length of the mineralized horizon that was sampled.

As a result of the 2002 sampling program, it is concluded that further, systematic drilling is required along the entire 2.3 km trend of the mineralised horizon, even in portions where weaker mineralization was encountered in previous drilling (Tremblay, 2002). To date, most of the drilling that has been completed is relatively wide-spaced and shallow. The property is considered to have very favourable exploration potential for significant, additional mineralization (Tremblay, 2002).

OCT 14 '02 18=17 PPGE.28

OCT-14-2002 15=25 P.29/42

4,0 References:

Childe, F., 1997 Arseno Lake Property, Ontario, Summary of Previous Work and Recommendations for Future Work. A report prepared by Energold Minerals Inc.

Elsby, D.C., 1988 Ontario Gold Joint Venture, Arseno Lake Property, 1986-1987 Assessment Report.

Elsby, D.C., 1989 Ontario Gold Joint Venture, Arseno Lake Property, 1988 Diamond Drill Assessment Report, Volume I.

Elsby, D.C., 1989 Diamond Drill Logs and Location Maps, Holes A-88-1 to A-88-5, to accompany Arseno Lake Property, 1988 Diamond Drill Assessment Report (Vol II).

Elsby, D.C., Gorzynski G., and Kilby D.B., 1987, Northern Dynasty Explorations Ltd. Arseno Lake Property, Diamond Drill Logs and Sections, Holes A-87-1 to A-87-25.

Tremblay, R.J., 2000 Consulting Geologist. Northern Dynasty Minerals Ltd., Internal Memorandum.

Tremblay, R.J., 2002 Consulting Geologist, Northern Dynasty Minerals Ltd., Internal memeorandum.

OCT 14 '02 18=17 PPlGE.29

A-ftfl-2 A-87-25 l' A-89-3

NORTHERN DYNASTY MINERALS LTD. and ENERGOLD MINERALS INC.

EYAPAMIKAMA PROPERTY ONTARIO

Location of Drill Holes Used for Lithogeochemical Analyses

Oct. 10. 2002claims100ct02.dwq

OCT-14-2002 15=25 P.31/42

Appendix l- Geochemical Analysis Results

OCT 14 '02 18=17 PAGE.31

o o-H

NORTHERN DYNASTY MINERALS LTD. EYAPAMIKAMA LAKE PROPERTY - 2002-GEOCHEMICAL ANALYSIS RESULTS

DRILL HOLE A-87-12

g Samplervj "

S 826548

"^ 549

550

551

552

553

554

555

836556

Depth (m)

35.0

50.8

65,0

80.2

95.0

ito.s125.6

137.5

149.0

Lithology from drill logs

Chl-Bio-Gar Schlil

Chl-Bfo-Gar Schist

Chl-Blo-Gsr Schist

Chl-Blo- Gar Schist

Chl-Hlo-Gar Schist

Chl-Bio Schist

Chl-Blo Schist

Chl-Blo Schfsl

CM-Bio-Sthist

A1203 PCT

17.14

16.17

17.49

17.78

17.81

6.61

12.04

5.51

14.07

DaO PCT

0.04

0.03

O.C4

0.03

0.03

0.02

0.03

0.02

0.03

CaO PCT

4.73

10.24

7.60

1,22

0.29

031

0.25

9.77

6.67

Cr203 PCT

0.04

0.03

0.04

0.15

O.OS

0.08

0.11

O.OS

0.08

Fe203 PCT

11. RO

11.01

8.29

9.88

8.15

1.50

2.58

5.62

9.85

K2O PCT

233

1.70

237

1.79

Ii94

1.5!

3.41

1.29

0.71

MgO PCT

3.24

3.20

4.26

1.92

0.77

0.44

0.59

4.43

7JO

MnO PCT

0.22

0.42

0.23

034

0.93

0.03

0.07

031

0.18

Na2O PCT

0.95

0.97

OJO

0.18

0.13

0.11

0.14

0.14

2.60

P7O5 PCT

0.10

O.tl

0.11

0.44

0.02

0.02

0.03

0.03

0.07

Si02 PCT

56.75

52.14

57.00

65.05

67.89

8731

7S.01

65.09

54.03

SrO PCT

*:0.01

0.01

^.01

i 0.01

<0.01

<0.0l

e 0.01

<0.01

0.02

TiO2 PCT

1.26

1.19

1.27

0.82

0.8!

0.19

0.64

031

0.7!

LOI PCT

1.08

2.81

0.83

0.63

1.11

1.53

1.89

5.65

2.22

TOT PCT

99.68

100.03

99.S3

100.03

99.96

99.76

99.79

98.22

98.54

Rb PPM

118

84

107

79

55

41

56

41

27

Nb PPM

1 10

:10

00

s 10

elO

<10

-:10

<10

ilO

ZT PCT

77

71

78

73

78

63

100

56

64

Y PCT

23

22

Tfi

24

ia7

1110

16

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Prepared by: Robert J. Tremblay P.Geo, October 10 ,2002

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NORTHERN DYNASTY MINERALS LTD. EYAPAMIKAMA LAKE PROPERTY - 2002 GEOCHEMICAL ANALYSIS RESULTS

DRILL HOLE A-87-13

Sample lil

826558

559

550

5&1

562

563

564

56S

566

567

568

569

826570

Depth (m)

26.0

40.9

56.8

73.8

893

106.5

122.0

133.8

148.8

167.9

175.5

185.5

194.6

Lllhology from drill logs

Chl-Blo Schist

Chl-Gar-Blo Schist

Chl-Gar-Blo Schist

Chl-Gar-BIo Schist

Cbl-Gar-Bio Schist

Cbl-Gar-Blo Schist

Chl-Gar-Blo Schist

Chl-GarScbW + I-F.

Qtz-GruI.F.

QlK-Grunl.F.

Fragmental or Con gio m.

Qfz-Ser-Fu Schist

QttChlSchUt

AJ203 PCT

16.72

16.93

1634

15.18

18.89

13.17

16.2.1

17.21

031

038

1033

10.01

1938

BaO PCT

0.05

0.05

0.05

0.03

0.04

0.04

0.03

0.03

eO.Ol

:0.01

0.02

0.02

0.04

CaO PCT

1.29

0,92

0.45

5.45

039

033

6.16

0.16

0.08

0.25

0.13

0.81

0.88

Cr203 PCT

0.08

0.10

0.06

0.05

0.07

0.06

0.07

0.09

0.09

0.10

0.11

0.09

0.11

Fe2O3 PCT

13.11

12.58

10.52

20.89

6.77

11.10

9.16

17.29

3.86

2.62

1.98

18.04

13.16

K2OPCT

3.08

3.09

4.54

1.25

3.91

233

1.87

1.89

0.06

0.04

1.79

1.45

2.67

MgOPCT

2.59

2.28

1.26

4.78

0.85

1.13

4.65

1.08

0.09

0.09

0.87

3.62

3.69

MnO PCT

0.29

0.27

0.6S

0.67

0.15

0.65

0.34

0.72

0.08

0.06

0.02

0.93

0.28

Na20 PCT

0.1 S

0.16

0.27

0.25

0.22

0.15

0.29

0.09

c 0,01

^.01

0.29

0.08

032

P205 PCT

0,19

0.20

0.15

0.10

0.11

0.10

0.07

0.01

0.01

0,01

0.04

0.05

0.05

SiO2 PCT

59.25

60.45

61.66

48.06

65.15

67.10

59.76

S8.50

9338

9539

81.18

63.94

5736

SiO PCT

e 0.01

e 0.01

:0.01

e 0,01

^.01

-JO.Ol

c 0.01

^.01

<0.01

<0.01

<0.01

<0.01

^.01

T102 PCT

1.70

1.75

1.67

1.17

137

1.68

0.73

0,78

0.03

50.01

0.57

0.49

0.67

LOI PCT

1.41

1.19

2,14

2,05

1.98

1.60

0.79

2.03

0.7S

0.63

1.72

O.U

133

TOT PCT

99.91

99.97

99.96

99.93

99.90

100.04

100.13

99.88

98.74

99.57

98.25

99.66

99.94

Rb PPM

161

153

163

83

96

75

63

69

2

2

55

35

81

Nb PPM

J 10

00

s 10

CIO

<lO

OO

e 10

UO

<10

<10

<10

<10

OO

Zr PCT

115

115

J 12

68

84

113

68

88

*:18

e 10

81

84

116

Y PC-

26

IS

31

33

12

30

17

H

3

4

7

39

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Prepared by: Robert J. Tremblay P.Geo, October 10'*, 2002

Legend : Bio: BiotiteCbl: ChloriteGar: GarnetSen SericiteSil: Siliceous/silicified

Gale: Calcareous Gru: Grunerite Serp: Serpentine Qlz: Quartz

I.F.: Iron Formation Fu: Fuchsite Chem: Chemical U.M.: Ultramafic

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NORTHERN DYNASTY MINERALS LTD. EYAPAMIKAMA LAKE PROPERTY - 200Z GEOCHEMICAL ANALYSIS RESULTS

DRILL HOLE A-87-23

Sampleft

826577

S78

579

580

581

582

583

584

826585

Depth (m)

20.0

3S.6

49,5

66.9

81.0

98.0

111.0

124.5

136.7

Llihology Tram drill logs

CM SchUl

Chl-Gsr Schist (Gab ?)

Cor-Bio Schist

Bio-Chl Schist

Bio-Chl Schlit

Chl-SII-Gsr Schist

Chl-Sil Schist

Chilli Schdt

Chl-SII SchlH

AJ203 PCT

13.74

14.70

19.84

17.48

15.66

3.16

13.50

10,93

12.57

BaO PCT

0.02

0.01

0.04

0.04

0.04

0.01

0.02

0.02

0.05

CaO PCT

9.41

7.85

0.79

7.95

4.11

M.66

10.17

16.75

6.SS

Cr2O3 PCT

0.08

0.07

0.11

0.01

0.12

0.11

0.16

0.07

0.09

Fel03 PCT

10.01

8.14

9.19

10.92

11.50

11.07

12.61

8.46

10.27

K2OPCT

0.21

0.26

3.59

2.88

2.8S

0.47

0.22

0.40

1.22

MgO PCT

7,17

7.37

4.42

5.69

4.79

12.70

5.73

5.89

7.67

MnO PCT

OJ8

0.37

0.21

0.14

0.41

0.54

0.39

0.41

0.21

Na2O PCT

1.81

3,38

0.17

0.44

0.74

0.15

OJ6

1.63

1.88

P205 PCT

0.06

0.06

0.05

0.09

0.04

0.01

0.06

o.os0.06

semPCT

55.16

56.15

58.66

52.70

57.09

11.41

54.08

45.72

56.85

SrO PCT

<0.01

0.01

i 0.01

0.01

<0.01

<0.01

*O.OI

<0.01

0.01

T402 PCT

0.61

0.63

0.68

0.67

0.61

0.14

0.81

0.60

0.70

LOI PCT

0.87

0.97

2.00

1.05

2.00

3259

1.58

7.99

t. 68

TOTPCT

99.63

99.98

99.85

100.07

99.96

99.02

99.75

98.92

99.82

Rb PPM

5

6

1GO

86

90

33

9

13

31

Nb PPM

:10

C 10

*;io s 10

-elO

oo e 10

.*HO

<IO

ZrPCT

52

55

103

93

90

s 10

59

43

68

YPCT

18

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16

12

15

li

17

16

16

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Calc: Calcareous Gru: GruneriteSerp: Serpentine Qtz: Quartz

I.P.: Iron Formation Fu: FuchsiteChem: Chemical Cor: Cordierite

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DRILL HOLE A-87-25

SampleH

826S97

593

599

600

601

602

603

604

60S

606

607

603

826609

Depth (m)

26.0

41.0

S6.0

11.0

86.0

100.9

117.6

129.3

143.1

158.0

173.0

186.S

199.2

Lithology from drill logt

Chl-Bio Schist

Chl-Bio Schist

Scr-Bio-Gar Schisl

Ser-Bio Schisl

Gar-CM-Bio Schist

Gar-Chl-Blo SchUl

Fu-Ser-Fd (?)-Cor (?) Schisl

Cherty Blo-Gru-Gsr Schist

Bio Schisl

Bio Schist

Bio-Chl Schist

Blo-Chl Sctutt

Blo-Cbl Schisl

AJ203 PCT

13.32

14.03

16.50

12.93

15.23

15.18

20.13

10.38

2.42

25,80

10.16

12.44

12.81

BaO PCT

0.03

0.03

0.03

0.03

O.OS

0.03

0.04

0.03

0.01

0.04

0.04

0.02

0.03

CaO PCT

9.07

0.48

1.S3

0.73

1.92

0.24

0.46

0.11

0.55

0.46

1.25

12.71

6,33

Cr203 PCT

0.07

0.07

0.12

0.04

0.11

0.23

0.14

0.12

0.57

0.14

O.OS

0.08

0.10

Fe203 PCT

13.75

14.51

10.17

7.98

10.95

9.11

2.66

4.03

19.45

6.86

3.07

10.75

11.28

K2O PCT

1,59

3.23

2.68

3.52

1.60

0.78

3.29

3.00

0.47

2.S6

2.85

0.72

0.80

M&OPCT

8.18

3.SO

2.78

1.16

2.70

0.82

0.92

0,32

1.91

0.71

1.61

6,86

6.63

MnO PCT

1.07

0.73

0.60

0.48

0.72

0,26

0.03

0.06

2.09

0.20

0.07

0.28

0.24

Na2O PCT

0.44

0,11

0.26

0.38

0.71

0.03

0.53

OJO

s 0.01

0.45

0.14

1.52

2.28

P205 PCT

0.06

0.06

0.07

0.25

0.11

0.02

0.03

0.01

0.21

0.05

0.03

0,06

0.06

SI02 PCT

50.58

61.03

63.09

69.76

64.03

71.52

67.13

77.13

71.85

60.08

79.01

49.06

56.71

SrOPCT

SO.OI

^.01

"i 0.01

e 0.01

0.01

:0.01

^.01

JO.Ol

tfO.Ol

^.01

^.01

0.01

OJ)1

T102 PCT

OJS6

0.64

0.75

0.43

0.97

1.23

0.78

0,85

0,18

0,82

054

0.6S

0.70

LOI PCT

1JO

1.48

1.40

2.30

0.90

0.26

3.56

2.55

0.1 S

1.63

1.14

4.09

1.29

TOT PCT

99.92

99.90

99.98

99.99

100.01

99.71

99.70

98.95

99.86

99.80

99.99

99.25

99,27

Rb PPM

49

158

ISO

156

85

36

84

131

25

57

67

20

21

Nb PPM

s 10

*:10

o: 10

10

e 10

e 10

e 10

c 10

<lO

*:10

<10

e 10

<10

Ir PCT

51

56

70

172

94

63

117

51

10

129

86

46

62

Y PCT

17

9

11

12

8

12

18

7

4

18

g

17

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Prepared by: Robert J. Tremblay P.Gco, October 10", 2002

Legend : Bio: BiotiteCbl: ChloriteGar: Garnet

Gale: Calcareous Gru: Grunerite Ser: Sericite U.M.:Serp: Serpentine Qlz: Quartz Chem:Chemical Cor:

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DRILL HOLE A-88-2Sample

a826516

517

518

519

520

521

522

523

524

525

526

527

528

529

530

531

532

533

Depth (m)

42.4

613

80.6

97.1

117.5

136.5

152.0

166.2

182.4

201.9

219,5

237.6

259.4

2793

300 J

317.1

333.4

349.7

Lithology from drHI logs

Blo-Ser-Gar-Chl Schist

Bio-Ser-Gar-Chl Schist

Bls-Ssr-Gar-Cbl Schist

Bio-Ssr-Gar-ChlSebitt

Blo-Scr-Gar-Chl Schist

Blo-Ser-Gar-Chl Schist

Blo-Ser-Gar-Cbl Schist

Chl-Blo Schist

Basalt

Bsualt

CM-Bio Schist

Basalt

Basalt

Bio-Chl Schist

Talc Schist

Bio Schist

Ser Schist

Ser-Bio Schist

AI2O3 PCT

16.73

16.46

19.2?

14.13

17.76

15.11

15.63

6.78

14.67

13.66

11.82

14.01

13.78

15.39

13.73

15.20

1.19

8.81

BaO PCT

0.03

0.04

0,04

0.02

0.04

0.03

0.03

0.02

0.02

0.03

0.02

0.02

0.02

0.05

0.02

0.05

0.01

0.03

CaO PCT

3.62

2.46

254

6 JO

4.38

9.91

6.82

12.78

11.11

9.97

10.64

10.66

10,52

4.77

10.54

4.68

5.15

0.88

Cr2O3 PCT

0.04

0.03

0.05

0.02

0.04

0.03

0.03

0.15

0.06

0.02

0.14 i

0.06

0.07

0.07

0.07

0.08

035

0.07

Fe2O3 PCT

IMS

12.92

7.S4

5.15

9.86

15.17

14.61

15.75

10.43

12.25

9.03

9.58

10.46

9,88

10.43

9.89

10.95

3.06

K20 PCT

1.58

1.27

1.87

2.42

2.83

0.50

0.23

0.13

0.35

0.65

0,63

0.23

0.17

330

0.17

3.29

0.02

2.48

MgO PCT

3.2S

3.85

1.96

3.13

2.82

5.55

4.10

12.64

7.04

5.21

10.52

7.45

7.27

5.62

7.31

5.66

27.94

1.44

MnO PCT

0.18

0.17

0.11

0,22

0.17

0.29

0.67

035

0.27

0.27

033

0.40

0.41

0.41

0.40

0.41

0.28

0.09

Na20 PCT

1.73

1.62

1.54

0.55

1,81

056

332

034

1.16

1.11

0.70

139

136

0.41

1.36

0.40

0.10

0.12

P2O5 PCT

0.10

0.11

0.12

0.12

0.11

0.10

0.10

0.04

0.05

O.OS

0.05

0.06

0.06

0.07

0.06

0.07

0.01

0.04

Si02 PCT

S&27

57.SO

62.70

65.02

58.17

50.96

52,23

48.47

53.10

55.00

53.85

54.50

54.29

5832

54.24

58.24

33.03

80.67

SrO PCT

•s 0.01

•e 0.01

•c 0.01

•e 0.01

•co.oi*:0.0l

0.01

•c 0.01

•c 0.01

*:0.01

•tO.Ol

0.01

0.01

•c 0,01

0.02

•i 0.01

•s 0.01

*:0.01

TiO2 PCT

1.25

1.23

1.44

038

130

1.11

1.18

0.70

0.66

0.88

0.53

0.61

0.59

0.6S

0.61

0.66

0.09

0,54

L01 PCT

1.61

2.08

0.70

234

0.66

0.62

0.78

l.SO

1.03

0.90

133

0.79

0.95

0.91

1.00

1.09

20.65

1.26

TOT PCT

99.90

99.74

99.83

99,80

99,95

99.94

99.74

99.95

99.95

100.03

99,59

99.77

99.96

99.85

99.96

99.72

99.76

99.49

Rb PPM

51

49

46

84

93

14

3

3

8

22

15

6

2

88

2

87

2

63

Mb PPM*:IO

c 10

•: 10

•elO

•UO

•UO

•e 10

•clO

<10

*:10

OO

•c 10

•e 10

••J 10

<lO

•e 10

*\0

<10

Zr PCT

73

73

88

164

81

63

71

33

45

77

42

52

52

58

54

S3•OO

73

Y PCT

20

13

21

10

17

23

25

13

16

2Z

13

18

16

15

16

16

4

9

ooH

lM Ei Q iV)

Ul

ro

Prepared by: Robert J. Tremblay P.Geo, October 10 ,2002

TD D CDmUlen

10

T)

di

.ru

o o

Qrvj

OD

1-^ OD



tt

816S3S

536

537

538

539

540

541

542

543

544

545

826546

Depth (m)

41.6

60.7

81.2

99.1

124.6

144.9

161.6

177.9

187.1

2073

222.0

236.5

Lithology from drill logs

Bto-Chi Schist

Bio Schist

Chl Schist

Blo-Chl Schist

Basalt

Chl-Blo Schist

Baiall

Bio-Gar-Chl Schist

Chl Schist

Chl Schist In Sil l.P.

Sor-Bio ScMst

Cbloritic U.M.

AI203per13.20

J3.9S

15.85

15.32

13.86

13.41

14,02

16.12

8.05

0.43

15/47

17.11

BaO PCT

0.02

0.06

0.02

0.04

0.02

0.01

"0.03

0.03

0.02

O.01

0.07

0.01

CaO PCT

12.08

10.68

10.12

8.87

10.09

10.33

9.40

0.96

11.93

0.63

3.60

2.42

Cr203 PCT

0.07

0.03

0.09

o.os0.06

0.06

0.06

0.09

0.12

0.04

0.04

1.03

Fe2O3 PCT

10.55

7.54

7,59

8.95

10.31

11.63

9.54

9.08

15/10

10.56

15.22

30.44

K2O PCT

1.66

1.77

0.21

2.94

0.17

0.36

0.89

1.90

0.22

0.04

3.76

0.10

MB0 PCT

6.74

6.91

7.09

538

7.47

7.49

7.07

1.45

11.94

0.84

3.4S

14.39

MnO PCT

0.45

0.18

034

OJ6

OJS

0.47

OJ1

0.58

0.46

0.66

0.51

0.74

Na20 PCT

0.68

3,22

2.10

0.32

1.87

1.26

1.61

0.31

0.66

•e 0.01

0.77

0.16

P205 PCT

0.04

0.21

0.06

0.07

0.07

0.06

0.06

0.08

0.08

0.21

0.17

0,08

SiO2 PCT

49.21

48,80

54.45

53.21

53.85

51.75

54.75

66.71

48.06

85.19

54.43

25.96

SrO PCT

•:0.0l

0.11

0.02

•s 0,01

0.02

0.02

0.01

<QJ>l

<0.01

^.01

<0.01

*;o.oi

TiO2 PCT

036

0.55

0.56

0.69

0.63

0.59

0.61

0.71

0.91

•s 0.01

1.79

0.46

LOI PCT

4.58

5.29

1.43

3.66

0.80

1J6

1.53

1.76

2.08

1.09

0.54

7.01

TOT PCT

99.84

99.30

99.93

99.86

99.60

99.80

99.89

99.88

99.93

99.69

99.85

99.91

RbPPM

54

82

5

102

2

12

28

62-

3

3

79

2

Nb PPM

•MO

19

•tlO

•J 10

•UO

•e 10

•uo*10

<10

<10

<10

<]0

ZrPCT

40

106

53

62

52

50

52

60

53

•e 10

90

25

Y PCI

15

13

14

14

11

17

17

17

IS

^

2C

12

oo

fvj

r\j

w

Prepared by: Robert J. Tremblay P.Geo, October 10th , 2002

T)l!CDm u

11

TJ Ul-aXiro

oo

S)rvi



#

826514

513

512

Sil

510

509

508

507

506

SOS

504

503

502

Depth (m)

34.0

50.6

60.0

81.2

107.1

118.5

140.5

159.7

184.7

206.5

221.0

240.0

266.2

Ldhology from drill logs

Calc. chem. sediment

Baiatt

Basalt

Basalt

Bisalf

Bssalt

B(o-Chl Schlit

Basalt

Chl-Blo Schtst

CM-BioSchtJt + Sil I.F.

Talc-Serp Schist

Blo-Ser Schist

Sil-Scr Schist

A1203 PCT

12.74

13.66

14.26

14.66

13.99

14.32

14.29

10.27

6.96

11.17

2.65

20.06

14.91

BaO PCT

0.04

0.02

0.02

0.02

0.02

0.02

•0.05

0.04

0.03

0.02

0.01

0.09

0.04

CaO PCT

8.25

11.43

11.00

11.83

9.88

11.56

10.27

10,56

12.87

0.32

6,92

7.01

2.87

Cr2O3 PCT

0.04

0.08

0.07

0.06

0.07

0.07

O.OS

0.19

0.31

0.02

0.27

0.04

0.08

Fe203 PCT

14.07

11.45

11.05

12.37

12.07

11.04

10.69

11.91

16.76

16.04

11.04

9.24

9.13

K20 PCT

3X0

0.12

0.15

0.22

OJO

0.19

0.69

0.48

0.25

1.75

0.11

2,52

2,27

MgOPCT

4.90

8.26

8.31

834

7.37

7.61

8.49

13.92

10.59

1.91

24.83

5.06

2.72

MnO PCT

OJO

OJZ

0.33

OJ8

0.39

0.27

0.39

0.49

0.70

2,14

032

0.29

0.51

Na20PCT

0.27

1.76

1.58

137

1.57

137

O.S1

0.65

OJ7

0.28

0.12

2.20

1.93

P705 PCT

0.09

0.05

0.05

0.05

0.05

0.05

0.06

0.04

0.06

0.03

0.07

0.11

0.06

Si02 PCT

49.64

51.15

51.20

48.59

51.27

51.50

52.08

49.38

44.27

60.79

3538

51.03

6254

SrO PCT

•t 0.01

<0.01

0.01

•e 0.01

<0.01

0.01

<0.01

<0.01

•:0.01

<0.01

<0.01

0.02

0.01

Ti02 PCT

1.45

0.60

0.62

0.64

0.61

0.62

0.67

0.43

0.85

0.28

0.20

1.23

0.61

L01PCT

4.16

1,22

1.08

1.11

2.23

1.13

1.26

1.76

4.96

4,51

17.78

0.90

1.60

TOT PCT

9935

99.62

99.72

99.64

99.82

99.76

99.80

100.12

98.98

99.76

99.65

99.80

99.28

Rb PPM

111

2

3

3

7

Z

24

22

9

57

4

68

65

Nb PPM•:10

•i 10

•:10

•:10

•e 10

-HO

*10

*:10

•e 10

•clO

•e 10

•c 10

•c 10

Zr PCT

85

41

43

46

42

43

58

34

45

128

10

61

98

Y PCT

24

16

16

16

18

15

16

12

17

20

6

13

11

On

ro o o

enw

Prepared by: Robert J. Tremblay P.Geo, October 10'*, 2002

Legend : Bio: BiotiteCbl: ChloriteGar; GaraetSer: SericiteSil: Siliceous/silicified

Calc: Calcareous Gru: Grunerite Serp: Serpentine Qtz: Quartz

I.F.: Iron Formation Fu; Fuchsite Chem: Chemical U.M.: Ultramafic

ci mu OD

12

Tl

OD

ro

OCT-l4-2002 15:28 P.39/42

Appendix 2 - Geochemical Lab Report

13

OCT 14 '02 18=19 PflGE.39

o n

Xi.

(S

l-' CD

ALS ChemexAurora Laboratory Services Lid.Analytical Chemists' Geochamisls ' Regisieied Assayeis212BiooksbankAve., North Vancouver British Columbia. Canada V7J 2C1 PHONE: 604-964-0221 FAX: 604-984-0218

To: NORTHERN DYNASTY MINERALS LTD.

1020-800 W. RENDER ST. VANCOUVER, BC V6C 2V6

Project: Comments:

Page Numbor : 1 Tola! Pages 13 Certificate Date: 08-OCT- Invoke No. : 1022524 P.O. Number : Account :NMA

ATTN: ERIC T1TLEY FAX: ROBERT TREMBLAY

SAKPLZ

326502826503826504826505326506

326507326508926509326510826511

326512826513826S14826516326517

826518926519826520826521326522

926523826524826525826526826S27

926528826529826530926531926532

926533326535826536826537926538

826539826540926541926542326543

PRBPCODE

208208208208208

208208208208208

208208208208208

208208208206208

203208208208208

208208208208208

208208208208208

208208208208208

226226226226225

226226226226226

22622622622622S

226226226226226

226226226226226

226226226226226

226226226226226

22622622622622

A1203 BaO CaO Cr203 Fe203 X20 MgO\XR? * XRF * XRF * XRF * XRF Si, XRF H XRF *

CERTIFICATE OF ANALYSIS A0225242

KnO Ma20 P205 Si02 StO Ti02 DOI TOTAL Rb Nb Zr *XRF * XXP ^ XR? * XSP * XRF * XRF * XRF Si ppa ppm ppro pjsn

14.91 0.04 2.87 0.08 9.13 2.27 2.72 0.51 1.93 0.06 62,54 0.01 0.61 1.60 99.28 65 c 10 93 1120.06 0.09 7.01 0.04 9.24 2.52 5.06 0.2S 2.20 0.11 51.03 0.02 1.23 0.90 99.80 68 t 10 61 13

2.65 0.01 6.92 0.27 11.04 0.11 24.83 0.32 0.12 0.02 35.38 < 0.01 0.20 17.76 99.65 4 c 10 10 611.17 0.02 0.32 0.02 16.04 1.75 1.91 2.14 0.28 0.03 60.79 < 0.01 0.28 4.51 99.26 57 c 10 128 20

6.96 0.03 12.87 0.31 16.76 0.25 10.59 0.70 0.37 0.06 44.27 < 0.01 0.85 4.96 98.98 9 C 10 45 11

10.27 0.04 10.56 0.19 11.91 0.48 13.92 0.49 0.65 0.04 49.38 < 0.01 0.13 1.76 100.12 22 < 10 34 1214.29 0.05 10.27 0.05 10.69 0.69 8.49 0.39 0.31 0.06 52.08 < 0.01 0.67 1.26 99.60 24 < 10 58 K14.32 0.02 11.56 0.07 11.04 0.19 7.61 0.27 1.37 O.OS 51.50 0.01 0.62 1.13 99.76 7 < 10 43 IS13.99 0.02 9.88 0.07 12.07 0.30 7.37 0.39 1.57 O.OS 51.27 < 0.01 0.61 2.23 99.82 7 x 10 42 1814.66 0.02 11.83 0.06 12.37 0.22 8.34 0.38 1.37 0.05 48.59 < 0.01 0.64 1.11 99.64 3 t 10 46 16

14.26 0.02 11.00 Q. 07 11.05 0.15 8.31 0.33 1.58 O.OS SI. 20 < 0.01 0.62 1.08 99.72 3 < 10 43 If13.66 0.02 11.43 0.08 11.45 0.12 8.26 0.32 1.26 O.OS 51.15 < 0.01 0.60 1.22 99.62 2 t 10 41 1512.74 0.04 8.25 0.04 14,07 3.40 4.90 0.30 0.27 0.09 49.64 < 0.01 1.45 4.16 39.35 111 < 10 85 2416.73 0,03 3.62 0.04 11.48 1.58 3.23 0.18 1.73 0.10 58.27 < 0.01 1.25 1.61 99.90 51 < 10 73 2C16.46 0.04 2.46 0.03 12.92 1.27 3.85 0.17 1.62 0.11 57.50 < 0.01 1.23 2.08 99.74 49 < 10 73 IE

19.22 0.04 2.54 0.05 7.54 1.87 1.96 0.11 1.54 0.12 62.70 < 0.01 1.44 0.70 99.83 46 < 10 88 2314.13 0.02 6.30 0.02 5.15 2,42 3.13 0.22 0.55 0.12 65.02 < 0.01 0.38 2.34 99.80 84 < 10 164 1C17,76 0.04 4.38 0.04 9.86 2.83 2.82 0.17 1.81 0,11 58.17 < 0.01 1.30 0.66 99.95 93 < 10 31 i:15.11 0.03 9.91 0.03 15.17 0.50 5.55 0.29 0.56 0.10 50.96 < 0.01 1.11 0.62 99.94 14 < 10 63 2-15.63 0.03 6.82 0.03 14.61 0,23 4.10 0.67 3.32 0.10 52.23 0.01 1.18 0.78 99.74 3 *: 10 71 2!

6.78 0.02 12.78 0.15 15.75 0.13 12.64 0.35 0.34 0.04 48.47 < 0.01 0.70 1.80 99.95 3 < 10 33 i:14.67 0.02 11,11 0.06 10.43 0.35 7.04 0.27 1.16 0.05 53.10 < 0.01 0.66 1.03 99.95 8 -: 10 45 li13.66 0.03 9.97 0.02 12.25 0.65 5.21 0.27 1.11 0.08 55.00 < 0.01 0.88 0.90 100.03 22 < 10 77 2:11.82 0.02 10.64 0.14 9.03 0.63 10.52 0.33 0.70 0.05 53.85 < 0.01 0.53 1.33 99.59 IS < 10 42 l:14.01 0.02 10.66 0.06 9.58 0.23 7.45 0.40 1.39 0.06 54.50 0.01 0.61 0.79 99.77 S -: 10 52 1

13.78 0.02 10.52 0.07 10.46 0.17 7.27 0.41 1.36 0.06 54.29 0.01 0.59 . 0.95 99.96 3 t 10 52 115.39 0.05 4.77 0.07 9.88 3.30 5.62 0.41 0.41 0.07 58.32 < 0,01 0.65 0.91 99.85 88 •c 10 58 J13.73 0.02 10.54 0.07 10.43 0.17 7.31 0.40 1.36 0.06 54.24 0.02 0.61 1.00 99.96 2 -: 10 54 115.20 0.05 4.68 0.08 9,89 3.29 5.66 0.41 0.40 0.07 58.24 < 0.01 0,66 1.09 99.72 87 < 10 58 11.19 * 0.01 5.15 0.35 10.95 0.02 27.94 0.28 0.10 0.01 33.03 < 0.01 0.09 20.65 99.76 2 < 10 *: 10

8,81 0.03 0.68 0.07 3.06 2.48 1.44 0.09 0.12 0.04 80.67 < 0.01 0.54 1.26 99.49 S3 t 10 7313.20 0.02 12,08 0.07 10.55 1.66 6.74 0.45 0.68 0.04 49.21 < 0.01 0.56 4.58 99.84 54 < 10 40 L13.95 0.06 10.68 0.03 7.54 1.77 6.91 0.18 3.22 0.21 48.80 0.11 0.55 5.29 99.30 82 19 106 L15.85 0.02 10.12 0.09 7.59 0.21 7.09 0.34 2.10 0.06 54.45 0.02 0.56 1.43 99.93 5 < 10 S3 L15.32 0.04 8.87 O.OS 8.95 2.94 5.38 0.36 0.32 0.07 53.21 < 0.01 0.69 3.66 99.86 102 < 10 62 1

13.86 0.02 10.09 0.06 10.31 0.17 7.47 0.38 1.87 0.07 53.85 0.02 0.63 0.80 99.60 2 < 10 52 I13.41 0.01 10.33 0.06 11.63 0.36 7.4914.02 0.03 9.40 0.06 9.54 0.89 7.0716,22 0.03 0.96 0.09 9.08 1.90 1.458.05 0.02 11.93 0.12 15.40 0.22 11.94

0.47 1.26 0.06 52.75 0.02 0.59 1.36 99.80 12 < 10 50 10.31 1.61 0.06 54.75 0.01 0.61 1.53 99.89 28 K 10 52 J0.58 0.31 0.08 66.71 < 0.01 0.71 1.76 99.88 62 x 10 60 : -0.46 0.66 0.08 48.06 c 0.01 0.91 2.08 99.93 3 < 10 53 : -

Ji C

—————————————————————————————————————————————————————————————————————————————————— .. ——————————————— -x

roQ QW

CO

CERTIFICATION^M

14

a o

G)r\j

CD

ALS ChemexAuroia Laboratory Services Ltd.Analytical Chemists ' Geocriemists ' Reflislered Assayers212 Brooksbank Ave., North Vancouver British Columbia, Canada V7J2CI PHONE: 604-684-0221 FAX: 604-984-0218


1020 - 800 W. FENDER ST. VANCOUVER, BC V6C 2V6

Project: Comments:

Page Number :2 Total Pages :3 Certificate Date: 08-OCT- o Irwotee No. : 1022524 n P.O. Number : 7* Account :NMA ^

ATTN: ERIC TITLE Y FAX: ROBERT TREMBLAY

SAMPLE

126544926545926546326548926S49

826550825551326552826553826554

826555326556926558326SS9J26SSO

326561J26562926553326564926565

926566826567826S68826S69826570

826577926578326579826580926581

926582826583326584826585826587

826588926589326590926591926592

PRBPCODE

208208208208208

208208208208208

208208208208208

208208208208208

208208208208208

208208208208208

208208208208208

208208203208203

226226225226226

226226226226226

226226226226226

226226226226226

226226226226226

226226226226226

226226226226226

22622622622622

A1203 Bad CaO Cr203 Fe203 K20 KgO* XRF * XRF * XRF %XRF * XR? * XRF * XRF *

CERTIFICATE OF ANALYSIS A0225242

HnO N*20 P205 Si02 SrO Ti02 LOI TOTAL Rb Nb Zr YXRP*XRF3nXRP*XRF*XRF5fcXRF*XRF S ppm ppm ppm ppa

0.43 < 0.01 0.63 0.04 10.56 0.04 0.84 0.66 < 0.01 0.21 85.19 < 0.01 < 0.01 1.09 99.69 3 < 10 < 10 715.47 0.07 3.60 0.04 15.22 3.76 3.48 0.51 0.77 0.17 54.43 < 0.01 1.79 0,54 99.85 79 < 10 90 2017.11 0.01 2.42 1.03 30.44 0.10 14.39 0.74 0.16 0.08 25.96 < 0.01 0.46 7.01 99.91 2 .: 10 25 1217.14 0.04 4.73 0.04 11.80 2.33 3.24 0.22 0.95 0.10 56.75 < 0.01 1.26 1.08 99.68 119 < 10 77 2316,17 0.03 10.24 0.03 11.01 1.70 3.20 0.42 0.97 0.11 52.14 0.01 1.19 2.91 100.03 84 < 10 71 22

17.49 0.04 7.60 0.04 8.29 2.37 4.26 0.23 0.30 0.11 57.00 < 0.01 1.27 0.93 99.93 107 < 10 78 2217.78 0.03 1.22 0.15 9.88 1.79 1.72 0.34 0.18 0.44 65.05 < 0.01 0.82 0.63 100.03 79 < 10 73 2417.81 0.03 0.29 0.03 8.15 1.94 0.77 0.93 0.13 0.02 67.89 < 0.01 0.81 1.11 99.96 55 < 10 78 186.61 0.02 0.31 0.08 l.SO 1,51 0.44 0.03 0.11 0.02 87.31 < 0.01 0.29 1.53 99.76 41 ^ 10 63 7

12.04 0.03 0.2S 0.11 2. SB 3.41 0.59 0.07 0.14 0.03 78.01 < 0.01 0.64" 1.89 99.79 56 < 10 100 11

5.51 0.02 9.77 0.05 5.62 1.29 4.43 0.31 0.14 0.03 65.09 < 0.01 0.31 . 5.65 98.22 41 < 10 56 1014,07 0.03 6.67 0.08 9.85 0.71 7.30 0.18 2.60 0.07 54.03 0.02 0.71 2.22 98.54 27 < 10 64 1616.72 0.05 1.29 0.08 13.11 3.08 2.59 0.29 0.15 0.19 59.25 < 0.01 1.70 1.41 99.91 161 < 10 115 2616.93 0.05 0.92 0.10 12.53 3.09 2.28 0.27 0.16 0.20 60.45 < 0.01 1.75 1.19 99.97 153 < 10 115 2616.54 0.05 0.45 0.06 10.52 4.S4 L. 26 0.65 0.27 0.15 61.66 < 0.01 1.67 2.14 99.96 163 < 10 112 31

15,18 0.03 5.45 0.05 20.89 1.25 4.78 0.67 0.25 0.10 48.06 < 0.01 1.17 2.05 99.93 83 < 10 68 3318.89 0.04 0.39 0.07 6.77 3.91 0.85 0.15 0.22 0.11 65.15 < 0.01 1.37 1.98 99.90 96 * 10 84 1213.77 0.04 0.33 0.06 11.10 2.33 1.13 0.65 0.15 0.10 67.10 < 0.01 1.68 1.60 100.04 75 ( 10 113 3016.21 0.03 6.16 0.07 9.16 1.87 4.65 0.34 0.29 0.07 59.76 < 0.01 0.73 0.79 100.13 63 < 10 69 1717.21 0.03 0.16 0.09 17.29 1.99 1.08 0.72 0.09 0.01 58.50 < 0.01 0.78 2.03 99.98 69 < 10 88 11

0.31 < 0.01 0.09 0.09 3.36 0.06 0.09 0.08 < 0.01 0.01 93.33 < 0.01 0.03 0.75 98.74 2 < 10 < 10 30.39 < 0.01 0.25 0.10 2.62 0.04 0.09 0.06 < 0.01 0.01 95.39 < 0.01 < 0.01 0.63 99.57 2 t 10 < 10 4

10.33 0.02 0.13 0.11 1.98 1.79 0.07 0.02 0.29 0.04 81.18 < 0.01 0.57 1.72 99.25 55 *: 10 81 710.01 0.02 0.81 0.09 18.04 1.4S 3.62 0.93 0.08 0.05 63.94 i 0.01 0.49 0.13 99.66 35 t 10 84 3019.38 0.04 0.88 0.11 13.16 2.67 3.69 0.28 0.32 0.05 57.36 < 0.01 0.67 1.33 99.94 81 < 10 116 19

13.74 0.02 9.41 0.08 10.01 0.21 7.27 0.38 1.81 0,06 55.16 < 0.01 0.61 0.87 99.63 5 *: 10 52 1814.70 0.02 7.85 0.07 8.14 0.26 7.37 0.37 3.38 0.06 56.15 0.01 0.63 0.97 99.98 6 c 10 55 1519.84 0.04 0,79 0.11 9.19 3.59 4.42 0.21 0.27 0.05 59.66 < 0.01 0.68 2.00 99.85 100 < 10 108 1617.48 0.04 7.95 0.01 10.92 2.88 5.69 0.14 0.44 0.09 52.70 0.01 0.67 1.05 100.07 36 < 10 93 1215.65 0.04 4,11 0.12 11.50 2.85 4.79 0.41 0.74 0.04 57.09 < 0.01 0.61 2.00 99.96 90 < 10 90 IS

3.16 0.01 26.66 0.11 11.07 0.47 12.70 0.54 0.15 0.01 11.41 * 0.01 0.14 32.59 99.02 33 c 10 < 10 1113.50 0.02 10.17 0.16 12.67 0.22 5.73 0.39 0.36 0.06 54.08 < 0.01 0.81 1.58 99.75 9 -: 10 59 1710.93 0.02 16.75 0.07 8.46 0.40 5.89 0.41 1.63 0.05 45.72 < 0.01 0.60 7.99 98.92 13 < 10 43 1612.57 0.05 6.56 0.09 10.27 1.22 7.67 0.21 1.88 0.06 5S.85 0.01 0.70 1.68 99.82 31 < 10 68 1616.70 0.03 3.22 0.08 8.98 1.04 4.25

13.97 0.03 8.56 0.12 9.28 1.54 8.7413.95 0.03 4.76 0.15 10.55 2.65 4.9912.04 0.03 2.88 0.03 4.48 3.02 2.699.66 0.02 2.97 0.09 23.59 2.67 5.89

12.44 0.04 1.58 0.03 4.76 3.55 3.23

0.18 1.64 0.06 60.52 0.01 0.72 2. SI 99.94 37 < 10 52 18

0.35. 0.48 0.06 54.89 < 0.01 0.61 1.43 100.06 40 < 10 51 140.39 0.31 0.05 60.03 < 0.01 0.62 1.46 99.94 69 < 10 86 140.05 0.20 0.04 72.08 c 0.01 0.30 1.82 99.66 96 33 /} 585 310.42 0.11 0.07 53.05 < 0.01 0.39 0.82 99.74 85 < 10// 48 80.02 0.41 0.02 71.54 < 0.01 0.31 2.13 100.06 131 3l'-,S.606 21

///t)

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01

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CERTIFICATION:.

oo

G)ro

ALS ChemexAurwa Laboratory Services Ltd.Analytical Oiermsls' Geochemisis ' Regisie/ed Assaye/s212Brool(SbankAve., North Vancouver British Columbia, Canada V7J 2C1


1020-800 W. PENDERST. VANCOUVER. BC V6C 2V6

Project :

Page Number :3 Tolal Pages :3 Cartilkate Date:08-OCT n Invoice No. : 102252 H P.O. Number : -H Account :NMA .i

v- - s pHUNt: 6u-*-aa4-o22i t-Ax:eo4-aai-ozi8

SAMPLE

326593 926594 926595 926597 826598

826599 S26SOO 926601 926602 926603

S26S04 B26S05 82(606 326607 826608

126S09

PRBP CODE

208 208 208 208 208

208 208 208 208 208

208 208 208 208 208

208

226 226 226 226 226

226 226 226 226 226

226 225 226 226 226

226

&1203 BaO CsO Cr203 Pa203 K20 MgO * XRF * XR? * XR? * XRF *5 XRF \ XRF *6 XRF \

Comments: ATTN: ERIC TITLEY FAX: ROBERT TREMBLAY ^

CERTIFICATE OF ANALYSIS A0225242 w

KnO H*20 P205 Si02 SrO Ti02 LOI TOTAL Kb ffi) Zt r ^

8.27 0.02 11.88 0.18 11.68 0.09 11.47 0.21 1.77 0.06 50.90 0.02 0.69 1.53 98.77 4 < 10 42 li 17.53 0.03 4.14 0.05 2.26 2.42 2.42 0.09 0.68 0.07 67.84 0.04 0.29 1.62 99.78 63 < 10 130 S 13.45 0.04 7.15 0.11 10.95 0.09 6.69 0.19 2,05 0.06 56.38 < 0.01 0.71 0.94 98.81 32 < 10 59 15 13.32 0.03 9.07 0.07 13.75 1.59 3.16 1.07 0.44 0.06 50.46 < 0.01 0.56 1.30 99.92 49 < 10 51 17 14.03 0.03 0.48 0.07 14.51 3.23 3.50 0.73 0.11 0.06 61.03 < 0.01 0.64 1.46 99.90 156 < 10 56 9

16.50 0.03 1.53 0.12 10.17 2.68 2.78 0.60 0.26 0.07 63.09 < 0.01 0.75 1.40 99.98 150 < 10 70 li 12.93 0.03 0.73 0.04 7.98 3.52 1.16 0.48 0.38 0.25 69.76 •c 0.01 0.43 2.30 99.99 156 10 172 12 15.23 0.05 1.92 0.11 10.95 1.60 2.70 0.72 0.71 0.11 64.03 0,01 0.97 0.90 100.01 85 < 10 94 ft 15.18 0.03 0.24 0.23 9.11 0.78 0.82 0.26 0.03 0.02 71.52 * 0.01 1.23 0.26 99.71 36 X 10 63 li 20.13 0.04 0.46 0.14 2.66 3.29 0.92 0.03 0.53 0.03 67.13 < 0.01 0.78 3.56 99.70 84 < 10 117 18

10.38 0.03 0.11 0.12 4.08 3.00 0.32 0.06 0.30 0.01 77.13 < 0.01 0.85 2.56 98.95 131 < 10 51 7 2.42 0.01 0.55 0.57 19.45 0.47 1.91 2.09 < 0.01 0.21 71.85 < 0.01 0.18 0.15 99.86 25 * 10 10 4

25.80 0.04 0.46 0.14 6.86 2.56 0.71 0.20 0.45 0.05 60.08 < 0.01 0.32 1.63 99.80 51 < 10 129 It 10.16 0.04 1.25 0.08 3.07 2,85 1.61 0.07 0.14 0.03 79.01 < 0.01 0.54 1.14 99.99 67 -: 10 86 t 12,44 0.02 12.71 0.08 10.75 0.72 6.86 0.28 1.52 0.06 49.06 0.01 0.65 4.09 99.25 20 *: 10 46 11

12.81 0.03 6.33 0.10 11.28 0.80 6.63 0.24 2.28 0.06 56.71 0.01 0.70 1.29 99.27 21 < 10 (2 IS

T

; rv *

roCERTIFICATION:,

16

QNT&RIO MINISTRY OF NORTHERN DEVELOPMENT AND MINES

Work Report Summary

Transaction No: W0230.01576 Status: APPROVED

Recording Date: 2002-OCT-15 Work Done from: 2002-SEP-15

Approval Date: 2002-DEC-23 to: 2002-OCT-11

Client(s):

176468 NORTHERN DYNASTY MINERALS LTD.

Survey Type(s):

ASSAY

Work Report Details:

Claim#

PA

PA

PA

PA

PA

PA

PA

PA

PA

PA

PA

PA

PA

PA

PA

PA

PA

PA

PA

PA

PA

PA

PA

PA

PA

PA

PA

PA

PA

PA

PA

PA

803213

803214

803215

803216

816719

816720

816721

816722

816723

816724

816725

816726

818440

818441

818442

818443

818444

818445

818446

818447

818480

818481

818482

818483

818484

818485

818486

818487

818488

818489

818493

818494

Perform

SO

sososo

51,428

51,428

51,428

SO

50

50

S1 ,428

50

50

51,428

51,428

50

50

51,428

50

50

SO

SO

SO

50

51,428

51,428

SO

50

SO

SO

SO

50

S12.852

Perform Approve

SO

so50

50

51,428

51,428

51,428

SO

SO

SO

51,428

SO

SO

51,428

51,428

SO

SO

51,428

50

50

SO

SO

SO

SO

S1.428

S 1,428

SO

SO

SO

SO

SO

SO

S1 2,852

Applied

5400

5400

5400

S400

S400

5400

S400

5400

5400

5400

5400

5400

5400

5400

5400

5400

5400

5400

S400

S400

S400

S400

S400

5400

5400

5400

S400

5400

S400

5400

S400

S400

S1 2,800

Applied Approve

S400

S400

5400

5400

5400

5400

5400

S400

S400

5400

5400

5400

5400

5400

5400

S400

5400

5400

5400

5400

5400

S400

5400

S400

S400

5400

S400

S400

5400

5400

5400

S400

512,800

Assign

SO

so50

so51,028

51,028

51,028

SO

SO

SO

51,028

50

50

51,028

51,028

50

50

51,028

50

50

SO

SO

SO

SO

51,028

S976

SO

SO

SO

SO

SO

SO

59,200

Assign Reserve Approve Reserve Approve

0

0

0

0

1,028

1,028

1,028

0

0

0

1,028

0

0

1,028

1,028

0

0

1,028

0

0

0

0

0

0

1,028

976

0

0

0

0

0

0

59,200

SO

50

50

50

50

50

SO

SO

SO

SO

50

50

SO

SO

SO

SO

SO

SO

SO

sososososoSO

S52

sosososososo

552

50

SO

SO

SO

SO

SO

SO

SO

SO

sososoSO

SO

SO

sososososososososoSO

552

SO

SO

soSO

SO

SO

552

Due Date

2003-OCT-12

2003-OCT-12

2003-OCT-12

2003-OCT-12

2003-OCT-12

2003-OCT-12

2003-OCT-12

2003-OCT-12

2003-OCT-12

2003-OCT-12

2003-OCT-12

2003-OCT-12

2003-OCT-12

2003-OCT-12

2003-OCT-12

2003-OCT-12

2003-OCT-12

2003-OCT-12

2003-OCT-12

2003-OCT-12

2003-OCT-12

2003-OCT-12

2003-OCT-12

2003-OCT-12

2003-OCT-12

2003-OCT-12

2003-OCT-12

2003-OCT-12

2003-OCT-12

2003-OCT-12

2003-OCT-12

2003-OCT-12

fei

siW M

01 o o

2002-Dec-31 11:46 Armstrong-d Page 1 of 2

MINISTRY OF NORTHERN DEVELOPMENT AND MINES

Work Report Summary

Transaction No: W0230.01576 Status: APPROVED

Recording Date: 2002-OCT-15 Work Done from: 2002-SEP-15

Approval Date: 2002-DEC-23 to: 2002-OCT-11

External Credits: SO

Reserve:S52 Reserve of Work Report#: W0230.01576

S52 Total Remaining

Status of claim is based on information currently on record.

2002-Dec-31 11:46 Armstrong-d Page 2 of 2

Ministry ofNorthern Developmentand Mines

Date: 2002-DEC-23

Ministere du Developpement du Nord et des Mines Ontario

GEOSCIENCE ASSESSMENT OFFICE 933 RAMSEY LAKE ROAD, 6th FLOOR SUDBURY, ONTARIO P3E 6B5

NORTHERN DYNASTY MINERALS LTD. 1020-800 W. RENDER ST., VANCOUVER, BRITISH COLUMBIA V6C 2V6 CANADA

Tel: (888) 415-9845 Fax:(877)670-1555

Dear Sir or Madam

Submission Number: 2.24346 Transaction Number(s): W0230.01576

Subject: Approval of Assessment Work

We have approved your Assessment Work Submission with the above noted Transaction Number(s). The attached Work Report Summary indicates the results of the approval.

At the discretion of the Ministry, the assessment work performed on the mining lands noted in this work report may be subject to inspection and/or investigation at any time.

If you have any question regarding this correspondence, please contact LUCILLE JEROME by email at [email protected] or by phone at (705) 670-5858.

Yours Sincerely,

Ron Gashinski

Senior Manager, Mining Lands Section

Cc: Resident Geologist

Northern Dynasty Minerals Ltd. (Claim Holder)

Assessment File Library

Northern Dynasty Minerals Ltd. (Assessment Office)

Visit our website at http://www.gov.on.ca/MNDM/LANDS/mlsmnpge.htm Page: 1 Correspondence 10:17811

TIft f*DCVCUWHt KT

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Data l Time of Issue Oct 15 2002

TOWNSHIP y AREA

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UndTlttoB/Rtgitlry.Dlvlilon KENORA

Ministry of Natural R*iourc*B Diitrict SIOUX LOOKOUT

TOPOGRAPHIC LAND TENURE

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53B14NB2002 2.24346 LAKK200

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