Borehole Number: |
Prospecting Company: De Beers Holdings Botswana |
Prospecting License No.: PL001/97 |
Coordinates Type: WGS 84 |
Coordinates Format: Decimal Degrees (DD) |
Coordinates: -21.295455 , 25.515186 |
Location: Orapa |
Start Drill: 2005-08-17 |
End Drill: 2005-08-18 |
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: 960 Metres |
Borehole Water Strike: 62 Metres |
End of Hole (Depth): 77 Metres |
Hole Diameter: 165 Millimetres |
Log Formation: |
No. | From (m) | To (m) | Log Formation |
---|
1. | 0 | 3 | Dark brown, fine to medium grained loose Sand. |
2. | 3 | 5 | Yellowish brown, fine to medium grained loose Sand. |
3. | 5 | 10 | Dark cream white, calcretised Silcrete and calcrete. |
4. | 10 | 12 | Cream white weathered calcrete. |
5. | 12 | 19 | Very dark brown, weathered Basalt. |
6. | 19 | 34 | Greyish greenish, fresh and competent Basalt. |
7. | 34 | 43 | Brownish green, fresh and competent Basalt, the clay content is high. |
8. | 43 | 55 | Greyish greenish, fresh and competent Basalt with high clay content. |
9. | 55 | 60 | Greyish green Basalt mixed with reddish brown, oxidised Basalt. |
10. | 60 | 62 | Reddish brown, oxidised Basalt mixed with brownish Sandstone fragments. |
11. | 62 | 63 | Brownish, fine-grained, weathered Sandstone. |
12. | 63 | 64 | Yellowish, fine-grained, weathered Sandstone. |
13. | 64 | 77 | Pinkish brown, fine-grained, weathered Sandstone. Gravel size fragments falling from water strike zone are abundant. |
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