Borehole Number: |
Prospecting Company: De Beers Holdings Botswana |
Prospecting License No.: PL57/98 |
Coordinates Type: WGS 84 |
Coordinates Format: Decimal Degrees (DD) |
Coordinates: -21.489711 , 24.501044 |
Location: Kedia |
Start Drill: 2004-09-02 |
End Drill: 2004-09-07 |
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: 940 Metres |
Borehole Water Strike: N/A |
End of Hole (Depth): 255 Metres |
Hole Diameter: 165 Millimetres |
Log Formation: |
No. | From (m) | To (m) | Log Formation |
---|
1. | 0 | 10 | Surface feature: Gentle depression Vegetation: Grass/shrubs. Black fine Sand & Topsoil (humid Sand) and buff powderlly calcretised fine Sand. |
2. | 10 | 13 | Grey white-coated Silcrete. |
3. | 13 | 19 | Cream-white calcrete & Silcrete. |
4. | 19 | 28 | Dark-grey & mottled Silcrete and mottled medium grained calcretised Sandstone. |
5. | 28 | 37 | Medium calcretised Sandstone and Sandy calcrete. |
6. | 37 | 43 | Orange-pinkish fine to medium grained Sandstone. |
7. | 43 | 51 | Pink-red-brown medium grained Sandstone with some gravel. |
8. | 51 | 58 | Bioturbated coarse Sandstone, reddish, Chert and gravel. |
9. | 58 | 62 | Very ( fine grained) dark-red siltstone. |
10. | 62 | 74 | Red-brown medium grained Sandstone layrs in siltstone. Chert and gravel in Sandstone. |
11. | 74 | 82 | Sandstone: fine grained, pale grey (shinny but not micaceous) becoming grey downwards. |
12. | 82 | 90 | Major change to dark-red laminated mudstone/siltstone, grey fine Sandstone & red-dark (pink) siltstone intercalation. Water at 85m. Grey medium to coarse grained Sandstone. |
13. | 90 | 97 | Grey fine grained Sandstone with minor gravels at the top. Typical alluvial gravel at the base. |
14. | 97 | 120 | Mixture siltstone Sandstone. Red-brown siltstone slightly magnetic. Slight colour variations in places to red-brown (pinkish). |
15. | 120 | 150 | Siltstone: Red-brown & some yellowish - greyish. Colour becomes dull downward toward brown. |
16. | 150 | 159 | Brown-greyish, colour shifting toward greyish up to 159m. |
17. | 159 | 176 | Essentially grey siltstone to 183m. |
18. | 176 | 194 | Pale-grey siltstone. |
19. | 194 | 197 | Beautifully laminated dark-brown slate-like siltstone. Note: red-laminated Shales. |
20. | 197 | 205 | Grey siltstone with dark-brown & red/pink laminas, |
21. | 205 | 219 | Dark-brown, very fine texture, some unidentified crystals up to 1mm. can be seen in this fine, brown matrix, note elevated magnetic suceptibility. A large but very weathered yellowish crystal (3mm in size) Texture indicates Igneous but not identifiable |
22. | 219 | 241 | Grey & brown (pinkish) siltstone or grey-light-green. Essentially grey siltstone but with pinkish lenses. |
23. | 241 | 255 | Grey, greenish (pale-green) and dark-green siltstone. |
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