Yellowknife Gold Project - Resources
The Yellowknife Gold Project contains the Ormsby Zone, the Bruce Zone, the Nicholas Zone, the Clan Main Zone and the Goodwin Vad Zone. The resource estimates are based on geological models for which the nature and orientation of the mineralization is derived from the results of diamond drilling programs, underground mapping and sampling of decline development as well as on an extensive amount of technical data obtained during previous exploration programs. The resource estimates have been calculated using a search ellipsoid in an inverse distance to the second power model. The figures are rounded for presentation. The Ormsby, Bruce, Goodwin Vad and Clan Main Zones are at a 1.25 gpt cutoff. The Nicholas Zone is at a 1.1 gpt cutoff. The resource estimates incorporate all of the data available as of January 2009 and conform to National Instrument 43-101 policies.
The Ormsby, Bruce, Goodwin Vad and Clan Main Zones are at a 1.25 gpt cutoff. The Nicholas Zone is at a 1.1 gpt cutoff.
Table 1. Yellowknife Gold Project Resource Summary |
|
Measured |
Indicated |
M + I |
Inferred |
Ormsby Zone
Tonnes |
3,003,000 |
7,898,000 |
10,901,000 |
223,000 |
Grams per Tonne |
3.41 |
3.42 |
3.42 |
3.14 |
Troy Ounces, Gold |
329,000 |
869,000 |
1,198,000 |
23,000 |
|
|
|
|
|
Nicholas Zone
Tonnes |
1,249,000 |
1,484,000 |
2,733,000 |
955,000 |
Grams per Tonne |
3.81 |
3.32 |
3.54 |
3.92 |
Troy Ounces, Gold |
153,000 |
158,000 |
311,000 |
120,000 |
|
|
|
|
|
Bruce Zone Tonnes |
|
791,000 |
791,000 |
396,000 |
Grams per Tonne |
|
3.31 |
3.31 |
2.76 |
Troy Ounces, Gold |
|
84,000 |
84,000 |
35,000 |
|
|
|
|
|
Clan Main Zone Tonnes |
|
3,021,000 |
3,021,000 |
|
Grams per Tonne |
|
3.64 |
3.64 |
|
Troy Ounces, Gold |
|
354,000 |
354,000 |
|
|
|
|
|
|
Goodwin Vad Zone Tonnes |
|
|
|
971,000 |
Grams per Tonne |
|
|
|
2.91 |
Troy Ounces, Gold |
|
|
|
91,000 |
|
|
|
|
|
Resource Totals |
Measured |
Indicated |
M + I |
Inferred |
Tonnes |
4.252,000 |
13,194,000 |
17,446,000 |
2,545,000 |
Grams per Tonne |
3.53 |
3.45 |
3.47 |
3.29 |
Troy Ounces, Gold |
482,000 |
1,465,000 |
1,947,000 |
269,000 |
The resource estimates are based on geological models for which the nature and orientation of the mineralization is derived from observation of underground and surface exposures and diamond drill core. The inclusion of geological data results in a more robust resource estimate. The resource estimates conform to National Instrument 43-101 policies. The cut-off grades utilized are reported without economic implications. Cut-off grades are supported by the report prepared for Tyhee Development Corp entitled “NI 43-101 Technical Report on the Preliminary Assessment of the Yellowknife Gold Project” dated August 30, 2008. Details for Ormsby, Nicholas Lake, Bruce and Goodwin are disclosed in a report prepared for Tyhee Development Corp entitled “Report on the Resource Estimate of the Yellowknife Gold Project” dated March 4, 2009 available on www.SEDAR.com or www.tyhee.com Samples greater than 65 gpt gold were cut and reported as 65 gpt. Samples were composited into 1.5 m lengths. ID2 techniques were used to estimated 3m cubic blocks using an 80m x 40m x 10 m ellipsoid within a geological model that delineated brecciated and silicified rocks.
No economic viability is implied by the cut-off grades or the mineral resource estimates. Only Mineral Reserves as defined by National Instrument 43-101 have demonstrated economic viability. The mineral resource estimates will be affected by environmental, permitting, taxation, socio-economic, marketing, political, mining, metallurgical and infrastructure issues
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