Borehole Number: |
Prospecting Company: De Beers Holdings Botswana |
Prospecting License No.: PL001/97 |
Coordinates Type: WGS 84 |
Coordinates Format: Decimal Degrees (DD) |
Coordinates: -21.429372 , 25.569395 |
Location: Orapa |
Start Drill: 2005-04-01 |
End Drill: 2005-04-02 |
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: 994 Metres |
Borehole Water Strike: 15 Metres |
End of Hole (Depth): 150 Metres |
Hole Diameter: 165 Millimetres |
Log Formation: |
No. | From (m) | To (m) | Log Formation |
---|
1. | 0 | 1 | Light grey creamish calcrete mixed of top Topsoil. |
2. | 1 | 2 | Light grey creamish weathered calcrete. |
3. | 2 | 4 | Light grey olive creamish calcrete mixed of Silcrete. |
4. | 4 | 9 | Light grey calcretised fresh competent Silcrete. |
5. | 9 | 15 | Brownish light grey fresh competent Silcrete plus few calcrete. |
6. | 15 | 18 | Dark red brown oxidised basalt moderately competent. |
7. | 18 | 24 | Dark brown amygdaloidale fresh basalt moderate competent. |
8. | 24 | 26 | Dark red fresh competent basalt comprising calcite. |
9. | 26 | 30 | Dark red brown fresh and competent amygdaloidale basalt. |
10. | 30 | 35 | Medium brown fine grained fresh basalt (competent) plus few calcite. |
11. | 35 | 37 | Medium brown calcite and amygdals rich basalt (fresh). |
12. | 37 | 44 | dark reddish brown fresh basalt plus few calcite contain. |
13. | 44 | 50 | Medium greyish black competent fresh basalt containing few calcite. |
14. | 50 | 56 | Dark greyish green fresh competent basalt. |
15. | 56 | 63 | Medium brown competent amygdals rich fresh basalt. |
16. | 63 | 64 | Light reddish brown fresh Sandstone layer. |
17. | 64 | 69 | Light reddish brown competent basalt comprising greenish amygdals plus calcite. |
18. | 69 | 76 | Dark greyish brown fresh basalt moderately competent containing greenish amygdals. |
19. | 76 | 77 | Brownish amygdaloidale fresh basalt. |
20. | 77 | 84 | Dark greyish green fresh basalt higtly competent. |
21. | 84 | 89 | Very dark greenish grey fresh competent basalt. |
22. | 89 | 92 | Dark greenish grey fresh basalt containing few amygdals. |
23. | 92 | 96 | Dark greenish grey fresh competent basalt. |
24. | 96 | 100 | Dark grey fresh competent basalt. |
25. | 100 | 102 | Brownish grey amygdaloidale fresh and competent basalt. |
26. | 102 | 105 | Dark brownish grey fresh basalt highly competent. |
27. | 105 | 106 | Dark grey greenish fresh competent basalt. |
28. | 106 | 107 | Dark reddish brown competent basalt. |
29. | 107 | 109 | Dark greyish brown fresh competent basalt. |
30. | 109 | 112 | Dark brown moderate competent basalt with few amygdals on the bottom. |
31. | 112 | 113 | Oxidised amygdaloidale fresh basalt. |
32. | 113 | 119 | Dark brown fine grained fresh basalt comprising few amygdals plus blackish minerals. |
33. | 119 | 121 | Dark blackish grey competent fresh basalt. |
34. | 121 | 123 | Light red oxidised fresh competent basalt. |
35. | 123 | 126 | Dark grey blackish fresh competent gabbro (ignous mafic rock). |
36. | 126 | 136 | Dark greyish blue fresh competent gabbro ? Comprising fine grained pyrite. |
37. | 136 | 137 | Light brown competent fresh Sandstone. |
38. | 137 | 140 | Medium reddish brown fresh basalt plus few amygdals. |
39. | 140 | 144 | Light yellowish orange weathered Sandstone fine grained. |
40. | 144 | 145 | Dark brown weathered Sandstone. |
41. | 145 | 150 | Light yellowish fine grained Sandstone. |
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