Borehole Number: |
Prospecting Company: De Beers Holdings Botswana |
Prospecting License No.: PL31/88 |
Coordinates Type: WGS 84 |
Coordinates Format: Decimal Degrees (DD) |
Coordinates: -22.704878 , 27.881902 |
Location: Lerala |
Start Drill: N/A |
End Drill: N/A |
Borehole Type: Exploration |
Drilling Method: Core |
Sample Type: Core |
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): N/A |
Hole Diameter: N/A |
Log Formation: |
No. | From (m) | To (m) | Log Formation |
---|
1. | 0 | 2 | Brown clayey Topsoil. |
2. | 2 | 5 | Cream/yellow coloured nodular silic/calcrete in some basement gneiss, qtz and feldspar frag. |
3. | 5 | 10 | Nodular silic/calcrete with highly weathered kaolimised QF gneiss and moderately fresh chlorite QF gneiss. Highly decomposed gneiss falls apart in water. |
4. | 10 | 13 | Poorly calcretised Qf gneiss. |
5. | 13 | 21 | Fresh to moderately fresh grey qtz - biotite Schist veined with pink feldspar and quartz. |
6. | 21 | 26 | Qtz - bit Schist mixed with fine grained grey, chewable falc - chlorite Schist veined with pink feldspar and quartz. |
7. | 26 | 28 | 26-28m 50% brick red/brown weathered Schist. |
8. | 28 | 30 | Mixed fine grey qtz - bt Schist and Amphiboliteibolite. |
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