August 12 2

Image of Treaty Creek looking SW towards Seabridge’s Iron Cap

GR2

CB 17 24

Treaty 09 Mar 063

Marcia Treaty 2 142


The geological setting, transitional between sedimentary and volcanic sequences and the character of the mineralization, is indicative of a Volcanogenic Massive Sulphide (VMS) deposit. The host rock, age of mineralization, mineral assemblages, textures and character of the mineralization shows similarities with the nearby Eskay Creek deposit.

The GR2 zone comprises a series of structurally controlled veins showing polymetallic Au-Ag-Cu-Zn-Pb-Sb-As-Mn mineralization. Host rock is a varied sequence of sedimentary and volcanic rocks that encompasses the Upper part of the Stuhini Group and the lower part of the Hazelton Group. Oldest rocks consist of fossiliferous turbiditic mudstones, siltstones and interstratified sandstones. The upper part of the turbiditic sequence contains several stratified intermediate volcanic massive and breccia rocks. The upper part of the sequence is dominated by andesitic volcanic fragmental rocks.

Alteration of the host rock is mainly produced in the andesitic fragmental rocks, where clasts are replaced by massive sulphides (pyrite). The sedimentary rocks show replacements by pyrite and sulphides cementing sandstone layers. The main mineralized veins crosscut the stratigraphic sequence, following parallel north-northeast structures. They show atoll and breccia textures indicating several pulses of brecciation and sulphide mineralization. The host rock surrounding the veins shows intense phyllic alteration and pyrite replacements. There is also enrichment in gold (approx. 9 g/t) in late faults that crosscut the mineralized sequence in the footwall zone. The style of mineralization matches with medium to distal facies of a Massive Volcanogenic Sulphide (VMS) deposit.

GR2 Significant Drill Results


 Hole #             From   To           M       Au      Ag        Cu     Pb        Zn

GR2‐09‐01

89.45

90.65

1.2

 

1008.0

     

GR2‐09‐01

332.8

335

2.2

8.23

       

GR2‐09‐02

368.5

377.6

9.1

2.83

       

GR2‐09‐03

214

214.9

0.9

0.93

178.0

0.15

5.62

3.69

GR2‐09‐04

244.4

244.8

0.4

1.80

222.0

1.00

4.73

3.65

GR2‐09‐04

256.2

256.65

3.9

0.47

146.1

 

3.81

2.18

GR2‐09‐04

259.2

270.65

11.45

2.25

       

GR2‐09‐06

273.9

274.6

0.7

0.83

351.0

 

16.32

9.34

GR2‐09‐07

264

278.5

14.5

5.44

       

TC07‐24GR2

208.7

215.5

6.8

1.40

93.9

0.27

4.41

2.59

  GR2-09-07        264       278.5    14.5       5.44

  Including           266.11   273.45   7.34      6.36

  Including           276.5    278.0     1.50      17.29

  Including           267.6    268.62    0.97     14.30

  Including           272.5    273.45    0.95     10.70

  Including           277.0    277.40    0.40     27.50

  Including           277.4    278.0      0.60    16.20

All widths are downhole intervals as there has been inadequate drilling to determine true width