Borehole Number: |
Prospecting Company: De Beers Prospecting Botswana (Pty) Ltd |
Prospecting License No.: PL 7/2000 |
Coordinates Type: WGS 84 |
Coordinates Format: Decimal Degrees (DD) |
Coordinates: -21.4745 , 24.569599 |
Location: Orapa |
Start Drill: N/A |
End Drill: N/A |
Borehole Type: Exploration |
Drilling Method: Percussion |
Sample Type: Core & Chips |
Depth of Surface Casing: N/A |
Azimuth: Degrees |
Hole Inclination: N/A |
Collar Elevation: N/A |
Borehole Water Strike: N/A |
End of Hole (Depth): 190 Metres |
Hole Diameter: 6.5 In Millimetres |
Log Formation: |
No. | From (m) | To (m) | Log Formation |
---|
1. | 0 | 2 | Surface vegetation: grass and shrub. Dark-grey Topsoil & dull (dirty) cream calcrete. |
2. | 0 | 2 |
3. | 2 | 8 | Grey - orange to cream yellowish calcrete. |
4. | 2 | 8 |
5. | 8 | 17 | Pale orange Silcrete (fine grained) with cream-yellow Sandy calcrete. |
6. | 8 | 17 |
7. | 17 | 35 | Pale-orange & white Sandy calcrete. |
8. | 17 | 35 |
9. | 35 | 46 | Dark-red medium graiined Sandstone (poorly consolidated) colour index increases downward. |
10. | 35 | 46 |
11. | 46 | 60 | Very hard red-brown coarse grained (matrix free) Sandstone with "dirty" weathering/oxidation (quartzite-like) chips. Water struck at 60m. |
12. | 46 | 60 |
13. | 60 | 74 | Grey-red- brown fine grained Sandstone. |
14. | 60 | 74 |
15. | 74 | 86 | Grey Sandstone with large (very coarse) up to 10mm size rounded quartz pebbles to 80m. Possibe gravel layer(s) within Sandstone. |
16. | 74 | 86 |
17. | 86 | 180 | Mixture of grey & red-brown siltstone with some grey intercalations. Colour gradually changes to brown then orange-brown towards 112 - 115m then greyish at 120m. |
18. | 86 | 180 |
19. | 180 | 190 | Grey siltstone. Note the mixture of colour grey & dark-grey. Some chips show dark laminations. E.O.H at 190m in grey siltstone. |
20. | 180 | 190 |
© Botswana Geoscience Institute 2024 | www.bgi.org.bw | Disclaimer