Borehole Number: |
Prospecting Company: De Beers Holdings Botswana |
Prospecting License No.: PL31/88 |
Coordinates Type: WGS 84 |
Coordinates Format: Decimal Degrees (DD) |
Coordinates: -22.704628 , 27.882882 |
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 | 3 | Topsoil cover. |
2. | 3 | 10 | Clay rich weathered quartzo feldspathic basement, with minor granite gneiss fragments - weathered kimberlite. |
3. | 10 | 23 | Blue clay rich weathered zone with fragments of qtzofeldspathic basement, Amphiboliteibolitic, pink basement, granite gneiss. |
4. | 23 | 31 | Blue chips of kimberlite recovered with macrocrystic texture visible. |
5. | 33 | 33 | Kimberlite with + 60% xenoliths consisting of mainly angular granite gneiss, Amphiboliteibolite, feldspathic basement. |
6. | 33 | 34 | Kimberlite blue, fresh & macrocrystic. |
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