August 08, 2008
Commerce Resources Corp. (“the Company”) is in receipt of an updated resource estimate for the Upper Fir Carbonatite, located in east-central, British Columbia.
The updated resource estimate is based upon 20 HQ diameter diamond drill holes completed during 2005-2006, and an additional 18 HQ diameter diamond drill holes completed during 2007. The holes outlined a series of sill-like bodies with up to 100 m total thickness, that extends for more than 1,100 m in a north-south direction and up to 600 m in an east-west direction. The carbonatite remains open both to the east and to the south.
Based on the exploration from 2005-2007, the Upper Fir Carbonatite is estimated to contain an indicated resource of 14.68 Mt with average grades of 190 g/t Ta2O5 (Tantalum) and 1,300 g/t Nb2O5 (Niobium), within a 38 m confidence limit. In addition, the mineralized body is estimated to contain an inferred resource of 19.8 Mt with average grades of 188 g/t Ta2O5 and 1,612 g/t Nb2O5, within a 100 m confidence limit. When using higher grade cut-offs of 200 g/t Ta2O5, the average tantalum grades increase to 231 g/t for the indicated portion and 225 g/t for the inferred portion. Other details are as follow:
Updated Resource Estimate for the Upper Fir Carbonatite
Indicated Resources
Cut Off | Tonnes > Cutoff | Grade | |
g/t Ta | (M tonnes) | Ta2O5 g/t | Nb2O5 g/t |
200 | 4.05 | 231 | 1679 |
150 | 14.68 | 190 | 1300 |
100 | 18.50 | 179 | 1283 |
Inferred Resources
Cut Off | Tonnes > Cutoff | Grade | |
g/t Ta | (M tonnes) | Ta2O5 g/t | Nb2O5 g/t |
200 | 5.80 | 225 | 1,867 |
150 | 19.81 | 188 | 1,612 |
100 | 23.93 | 179 | 1,587 |
Notes:
- Mineral resources which are not mineral reserves do not have demonstrated economic viability.
- Not all tonnage will be recovered in mining, nor will all metal be recovered during milling and processing.
- mineral resources were estimated from a solid model using ordinary kriging and a block model with 5 m x 10 m x 10 m blocks;
- a specific gravity of 3.00 was utilized in converting volumes to tonnes; and
- indicated resources are those resources within 37.5 m of an existing data point, while inferred resources are those resources that are between 37.5 m and 100 m of an existing data point.
John Gorham, P. Geol., a qualified person as defined by National Instrument 43-101, supervised the preparation of the technical information in this news release.
On Behalf of the Board of Directors
COMMERCE RESOURCES CORP.

David Hodge
President and Director
Tel: 604 484 2700