Borehole Number: |
Prospecting Company: De Beers Holdings Botswana |
Prospecting License No.: PL64/99 |
Coordinates Type: WGS 84 |
Coordinates Format: Decimal Degrees (DD) |
Coordinates: -21.0663 , 24.7168 |
Location: Sesunda |
Start Drill: 2005-07-06 |
End Drill: 2005-07-07 |
Borehole Type: Exploration |
Drilling Method: Core |
Sample Type: Core |
Depth of Surface Casing: N/A |
Azimuth: Degrees |
Hole Inclination: N/A |
Collar Elevation: N/A |
Borehole Water Strike: 9 Metres |
End of Hole (Depth): 88 Metres |
Hole Diameter: 165 Millimetres |
Log Formation: |
No. | From (m) | To (m) | Log Formation |
---|
1. | 0 | 1 | Light greyish, very fine, cohesive clay rich Sand mixed with calcrete. No indicator minerals observed up to the EOH (88m depth). |
2. | 1 | 3 | Cream white, weathered calcrete. |
3. | 3 | 11 | Pale green, medium to fine, calcretised Silcrete (very hard): pan sediments. |
4. | 11 | 20 | Dark greyish, medium to fine-grained calcretised Silcrete (very hard), highly contaminated by gravel size loose fragments falling from above. |
5. | 20 | 28 | Pale greenish, medium to fine-grained, calcretised Sandstone: loose gravel size Silcrete fragments from the overlying formation are characteristic features. |
6. | 28 | 41 | Cream white to pale green, calcretised weathered Sandstone, highly contaminated by Silcretes (tabular shaped) as well as weathered calcrete. |
7. | 41 | 51 | Pale greenish to reddish brown, weathered silty Mudstone, highly contaminated by Silcrete/ Sandstone gravel size fragments. |
8. | 51 | 65 | Brownish green, moderately weathered silty Mudstone, few fragments of overlying sediments are observed. |
9. | 65 | 88 | Dark greyish to black, very fine-grained massive (crystalline), fresh and competent igneous rock, sparkling crystallographic surfaces against the sun. Calcite veining prominent and pyrite like mineral? recovered in concentrate. Relatively high magnetic su |
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