Yellowknife Gold Project - Resources
The Ormsby deposit resource estimate is based on a geological
model for which the nature and orientation of the mineralization
is derived from observation of underground and surface exposures
and diamond drill core. The resource estimate conforms to National
Instrument 43-101 policies. The resource has been calculated using
a search ellipsoid, determined by variography, in an inverse distance
to the second power model. A total of
82,514
assays were used,
composited into 1.5 meter lengths. A specific gravity of 3.04 was
used in tonnage conversion for the Ormsby Resource. Nicholas Lake uses a specific gravity of 2.70, an inverse distance
to the second power model, and a search ellipsoid of 50 x 34 x 5 m above 100 m elevation and 60 x 40 x 5 m below 100 m elevations
Table 1: Yellowknife Gold
Project (April, 2008)
Category |
Ormsby |
Nicholas |
Bruce |
Total |
Zone |
Main Zone |
Zone |
Resource |
Measured |
|
|
|
|
tonnes |
2,617,000 |
1,249,000 |
|
3,866,000 |
gold grade (gpt) |
3.38 |
3.81 |
|
3.52 |
ounces of gold |
284,000 |
153,000 |
|
437,000 |
|
|
|
|
|
Indicated |
|
|
|
|
tonnes |
5,620,000 |
1,484,000 |
252,000 |
7,356,000 |
gold grade (gpt) |
3.61 |
3.32 |
2.67 |
3.52 |
ounces of gold |
652,000 |
158,000 |
22,000 |
832,000 |
|
|
|
|
|
M&I |
|
|
|
|
tonnes |
8,237,000 |
2,733,000 |
252,000 |
11,222,000 |
gold grade (gpt) |
3.54 |
3.54 |
2.67 |
3.52 |
ounces of gold |
936,000 |
311,000 |
22,000 |
1,269,000 |
|
|
|
|
|
Inferred |
|
|
|
|
tonnes |
2,004,000 |
955,000 |
661,000 |
3,620,000 |
gold grade (gpt) |
3.02 |
3.92 |
2.79 |
3.21 |
ounces of gold |
195,000 |
120,000 |
59,000 |
374,000 |
Figures are rounded for presentation
Ormsby and Bruce Lake Zones use an ID2 estimate using a 1.25 gpt cut-off and a 100 gpt top cut. A search ellipsoid having 30, 60, and 90 metre axes were used in this estimate, in two passes. The first pass considers data inside a silicified domain, and the second pass considers data outside of the silicified domain. All Ormsby data is constrained to a geologically defined solids model. Nicholas Lake Main Zone is reported by Pratico, V.V, 2008 using a 1.1 gpt cut-off
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