Borehole Number: |
Prospecting Company: De Beers Holdings Botswana |
Prospecting License No.: PL109/88 |
Coordinates Type: WGS 84 |
Coordinates Format: Decimal Degrees (DD) |
Coordinates: -22.857756 , 26.146665 |
Location: Moralane |
Start Drill: 1900-01-02 |
End Drill: N/A |
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: 1144 Metres |
Borehole Water Strike: N/A |
End of Hole (Depth): 146 Metres |
Hole Diameter: N/A |
Log Formation: |
No. | From (m) | To (m) | Log Formation |
---|
1. | 0 | 1 | U Kalahari - unconsolidated ferricreted surficial scree. Few +2mm chips recovered |
2. | 1 | 6 | U Kalahari - buff white submature, moderate to poorly sorted, medium to fine grained massive and nodular Silcreted calcareous Sand/siltstone |
3. | 6 | 11 | Mosolotshane Fm - buff grey and maroon laminated, weathered and massive argillaceous and calcareous mudstone |
4. | 11 | 25 | Tlapana Fm - light grey massive and mature argillaceous siltstone/Shale assuming a darker grey black organic mudstone colour below 17m depth |
5. | 25 | 48 | Tlapana Fm - light grey, slightly greenish tinged mature argillaceous siltstone/Shale, well sorted with black organic spots and a dark grey/black organic mudstone lenses at 28-29m depth |
6. | 48 | 64 | Tlapana Fm - dull black and mature vitranous and carbonaceous Shaley Coal with several thin (cm) vitreous Coal stringers |
7. | 64 | 78 | Medium to coarse grained, massive and crystalline altered/weathered feldspathic granopyhre showing extreme weathering and alteration towards the base |
8. | 78 | 81 | Friable and extremely weathered granophyre with abundant black carbonaceous Shale contaminants from above horizons. Probable collapse material |
9. | 81 | 88 | Medium to coarse grained, crystalline but friable severely weathered and altered feldspathic granophyre |
10. | 88 | 146 | Massive and fine grained, dark coloured and moderately weathered to fresh crystalline dolerite becoming fresher and more aphanitic below 134m into a dark grey green light pinkish tinged probable basalt at base |
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