Bepkong Resource
The 50km2 district is part of Azumah's Wa Gold Project in north west Ghana. These licences encompass some 150 strike kilometres of prospective Birimian greenstone – the same rocks that are host to a majority of Ghana's major gold deposits.
Bepkong was a "blind" discovery arising from the follow-up of strong gold-in-soil anomalism, with no outcrop or old artisanal workings to lead geologists into the area. Further high-grade vein-hosted mineralisation has been discovered during 2011 in the 2km zone separating the Bepkong and Kunche deposits, approximately 300m south of the main Bepkong preliminary optimised pit perimeter.
The Bepkong district remains largely under-explored, and Azumah's drilling results confirm that there is every opportunity to discover and delineate additional resources in the district.
- Maiden JORC Code, NI 43-101 reported Indicated Mineral Resource estimate for Bepkong deposit of 1.0Mt at 2.5g/t Au for 82,000 ounces and Inferred Mineral Resource of 1.9Mt at 2.1g/t Au for 130,000 oz.
- 40% of contained gold in Indicated category grading 2.5g/t gold.
- 25% is oxide mineralisation grading 3.0g/t gold.
- Entire Mineral Resource is contained between surface and 175m depth.
- It is apparent from the completed 2011 infill drilling programme that robust mineralisation extends well below current planned pit floors.
- Mineral Resource remains open along strike to the south, to its immediate west and at depth.
- Further high-grade near-surface and deeper gold intercepts announced in October, July and April 2011.
- At Bepkong North, shallow wide-spaced reconnaissance aircore drilling has highlighted an interpreted mineralised corridor extending over 3km to the north of the Bepkong deposit.
- Mineral resource re-estimations have commenced, due in Q1 2012.
Bepkong Prospect – Drilling Results
Bepkong Deposit: NI 43-101 and JORC Code Reported 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 |
- 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 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.
Table A. Extents of mineralisation zone
| 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.