Borehole Number: |
Prospecting Company: De Beers Prospecting Botswana (Pty) Ltd |
Prospecting License No.: PL64/99 |
Coordinates Type: WGS 84 |
Coordinates Format: Decimal Degrees (DD) |
Coordinates: -21.15965 , 24.92402 |
Location: Makgadikgadi |
Start Drill: 2005-08-20 |
End Drill: 2005-08-22 |
Borehole Type: Exploration |
Drilling Method: Percussion |
Sample Type: Core |
Depth of Surface Casing: N/A |
Azimuth: Degrees |
Hole Inclination: N/A |
Collar Elevation: N/A |
Borehole Water Strike: 67 Metres |
End of Hole (Depth): 149 Metres |
Hole Diameter: 165 Millimetres |
Log Formation: |
No. | From (m) | To (m) | Log Formation |
---|
1. | 0 | 7 | Cream white to light brown, weathered calcrete. |
2. | 0 | 7 |
3. | 0 | 7 | Cream white to light brown, weathered calcrete. |
4. | 7 | 14 | Dark greenish (the colour fading with depth), massive crystalline, fresh and competent Silcrete. |
5. | 7 | 14 |
6. | 7 | 14 | Dark greenish (the colour fading with depth), massive crystalline, fresh and competent Silcrete. |
7. | 14 | 23 | Pale greenish, weathered siltstone. |
8. | 14 | 23 |
9. | 14 | 23 | Pale greenish, weathered siltstone. |
10. | 23 | 25 | Greenish brown, silty Mudstone. |
11. | 23 | 25 |
12. | 23 | 25 | Greenish brown, silty Mudstone. |
13. | 25 | 29 | Greenish brown, muddy Siltstone. |
14. | 25 | 29 |
15. | 25 | 29 | Greenish brown, muddy Siltstone. |
16. | 29 | 40 | Reddish brown, oxidised silty Mudstone. |
17. | 29 | 40 | Reddish brown, oxidised silty Mudstone. |
18. | 29 | 40 |
19. | 40 | 65 | Light greyish, finely laminated silty Mudstone. |
20. | 40 | 65 | Light greyish, finely laminated silty Mudstone. |
21. | 40 | 65 |
22. | 65 | 69 | Very dark grey to black, massive carbonaceous Mudstone, shiny pyrite crystals observed. |
23. | 65 | 69 | Very dark grey to black, massive carbonaceous Mudstone, shiny pyrite crystals observed. |
24. | 65 | 69 |
25. | 69 | 77 | Very dark grey to black, thinly laminated carbonaceous Mudstone (Coally), with super abundant pyrite as both the veinlets or crystals |
26. | 69 | 77 | Very dark grey to black, thinly laminated carbonaceous Mudstone (Coally), with super abundant pyrite as both the veinlets or crystals |
27. | 69 | 77 |
28. | 77 | 81 | Light greyish, thinly laminated carbonaceous Mudstone (Coal), with super-abundant crystals of pyrite. |
29. | 77 | 81 | Light greyish, thinly laminated carbonaceous Mudstone (Coal), with super-abundant crystals of pyrite. |
30. | 77 | 81 |
31. | 81 | 101 | Dark grey to black, thinly laminated carbonaceous Mudstone (Coally) with abundant pyrite. |
32. | 81 | 101 | Dark grey to black, thinly laminated carbonaceous Mudstone (Coally) with abundant pyrite. |
33. | 81 | 101 |
34. | 101 | 120 |
35. | 101 | 120 | Dark greyish, fine-grained, fresh and competent igneous mafic rock. Pyrite recovered in concentrate. Sparkling crystals against the sun are observed. |
36. | 101 | 120 | Dark greyish, fine-grained, fresh and competent igneous mafic rock. Pyrite recovered in concentrate. Sparkling crystals against the sun are observed. |
37. | 120 | 149 |
38. | 120 | 149 | Greenish grey, fine to medium grained igneous mafic rock, fresh and competent, and is characterised by the presence of mica like minerals. |
39. | 120 | 149 | Greenish grey, fine to medium grained igneous mafic rock, fresh and competent, and is characterised by the presence of mica like minerals. |
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