Bepkong Resource
- Maiden JORC Code reported Indicated and Inferred Mineral Resource estimate for Bepkong deposit of 2,970,000 tonnes grading 2.2g/t gold for 212,000 ounces
- 40% of contained gold in Indicated category grading 2.5g/t gold
- Entire Mineral Resource is contained between surface and 175m depth
- 25% is oxide mineralisation grading 3.0g/t gold
- New zone of mineralisation announced in July 2010. Best intercepts include:
8m at 4.06g/t gold from 36m (BRC157); 4m at 3.03g/t gold from 28m (BRC154); 12m at 1.67g/t gold from 24m (BRC155) - Mineral Resource remains open at depth and to the north.
More information can be found in our July 2010 and September 2008 ASX Announcements
West Bepkong – RC Drilling May 2010
Please see our July 6, 2010 ASX Announcement for more information.
Table 1: Bepkong Indicated and Inferred Mineral Resource Estimate
| Category | Weathering | Tonnes |
Gold g/t |
Contained Ounces Gold |
|---|---|---|---|---|
| Indicated | Oxide | 270,000 | 3.0 | 26,000 |
| Fresh | 760,000 | 2.3 | 56,000 | |
| Total | 1,040,000 | 2.5 | 82,000 | |
| Inferred | Oxide | 240,000 | 3.0 | 23,000 |
| Fresh | 1,700,000 | 2.0 | 107,000 | |
| Total | 1,930,000 | 2.1 | 130,000 | |
| Total | 2,970,000 | 2.2 | 212,000 |
- The Bepkong Mineral Resource estimate is quoted for blocks with a grade of greater than 0.8 g/t gold.
- Differences may occur due to rounding errors.
- Details of the Bepkong Mineral Resource estimation appear in Appendix 1
Appendix 1: Notes to Bepkong Gold Deposit Mineral Resource Summary Report
The resource is quoted for blocks with a grade of greater than 0.8 g/t. Differences may occur due to rounding errors.
- The Bepkong gold deposit is part of the Wa Gold Project in Ghana. The deposit is located 2km to the north of the Kunche resource
- A total of 51 Aircore holes were drilled into the Bepkong project area, with a further 86 RC holes and 6 diamond core holes additionally drilled. Of these, one aircore hole, 37 RC holes and all diamond holes penetrated the Bepkong mineralisation, as defined by the resource model
- All RC and diamond core collars were surveyed by DGPS. The aircore collars were surveyed by had held GPS
Down hole surveys were measured at approximately 30 metre intervals, by single shot camera - Wireframed domains capturing gold mineralisation within an envelope encapsulating samples of greater than 0.5g/t gold were modelled. A total of six separate wireframes were modelled and formed the basis for the resource estimate
- Wireframed surfaces representing the “top of fresh rock” (TOFR) and “bottom of complete oxidation” (BOCO) were modelled
- A block model was constructed for each deposit using wireframed mineralisation and weathering domains. A block size of 5m (X) x 25m (Y) x 20m (Z) was constructed, with subcells used to honour the wireframe surface fluctuations
- All drill samples were composited to one metre lengths
- Grade was estimated into each model using ordinary kriging (OK). A hard boundary was utilised at the TOFR weathering surface ensuring samples located above this surface could only be used to estimate similarly situated blocks, and vice-versa
- A top cut of 25g/t was applied to the composited data located in the weathered profile, above the TOFR surface. A top cut of 20g/t was applied to samples located below the TOFR
- Log variograms were modelled from sample data constrained within the mineralised wireframes. The sample populations were not split at the TOFR weathering surface
- Bulk densities were assigned according to the weathering profile of the block model. No bulk density data was available, but was set according to standardised values according to the rock and weathering type, as agreed between CSA and Azumah. All blocks located in the oxidised weathering profile were assigned a bulk density of 1.9 t/m3; blocks located in the transitional profile were assigned 2.3 t/m3, and blocks located in the fresh rock domain assigned a bulk density of 2.7 t/m3.
Table A presents the extents of the modelled resource.
| Easting | Northing | Elevation | |||
| Min | Max | Min | Max | Min | Max |
| 527,070 | 527,240 | 1,151,120 | 1,152,400 | 100 | 275 |
The reported resource has been classified as a combination of Indicated and Inferred. The Indicated portion of the Mineral Resource is supported by at least two holes drilled per section, with the section lines no more than 50 metres apart. Resource blocks were deemed to be Inferred where the continuity of mineralisation and geology was assumed but not verified. The classification is supported by a sound level of QAQC checks on assay data, and verified drill hole collar positions and down hole surveys.
