Borehole Number: |
Prospecting Company: De Beers Holdings Botswana |
Prospecting License No.: PL107/96 |
Coordinates Type: WGS 84 |
Coordinates Format: Decimal Degrees (DD) |
Coordinates: -21.36651 , 25.203809 |
Location: Orapa |
Start Drill: 2005-03-16 |
End Drill: 2005-03-17 |
Borehole Type: Exploration |
Drilling Method: Percussion & Core |
Sample Type: Core & Chips |
Depth of Surface Casing: N/A |
Azimuth: Degrees |
Hole Inclination: -90 Degrees |
Collar Elevation: 978 Metres |
Borehole Water Strike: 59 Metres |
End of Hole (Depth): 83 Metres |
Hole Diameter: 165 Millimetres |
Log Formation: |
No. | From (m) | To (m) | Log Formation |
---|
1. | 0 | 1 | Dark brown top Topsoil mixed few Silcrete. |
2. | 1 | 4 | Pale yellow creamish Silcrete calcretised. |
3. | 4 | 5 | Pale yellow moderate competent weathered basalt. |
4. | 5 | 8 | Dark brown yellowish calcite rich basalt. |
5. | 8 | 14 | Pale yellow calcite abundant weathered basalt moderate competent. |
6. | 14 | 19 | Yellowish brown moderate competent weathered basalt. |
7. | 19 | 23 | Greyish yellow weathered basalt comprising few amygdals plus calcite. |
8. | 23 | 29 | Dark brownish grey fresh competent basalt. |
9. | 29 | 30 | Dark grey competent basalt. |
10. | 30 | 32 | Dark yellowish olive weathered basalt. |
11. | 32 | 37 | Yellowish brown weathered basalt calcite contain. |
12. | 37 | 41 | Ligth yellowish orange weathered basalt. |
13. | 41 | 46 | Dark grey blueish fresh competent kimberlite? (homogeneous). |
14. | 46 | 47 | Yellowish grey weathered kimberlite. |
15. | 47 | 51 | Dark grey blueish fresh competent kimberlite. |
16. | 51 | 52 | Yellow greyish weathered kimberlite. |
17. | 52 | 58 | Dark grey blueish fresh competent homogenous kimberlite. |
18. | 58 | 61 | Light grey pyroclastic kimberlite more less competent, karoo sediment observed. |
19. | 61 | 65 | Medium brownish pink weathered fine grained Sandstone. |
20. | 65 | 75 | Light yellowish grey fine grained weathered Sandstone. |
21. | 75 | 78 | Light yellowish grey to olive weathered Sandstone. |
22. | 78 | 81 | Light red brownish moderate competent mudstone. |
23. | 81 | 83 | Light greenish brown weathered mudstone. |
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