| Borehole Number: |
| Prospecting Company: De Beers Holdings Botswana |
| Prospecting License No.: PL57/98 |
| Coordinates Type: WGS 84 |
| Coordinates Format: Decimal Degrees (DD) |
| Coordinates: -21.21221 , 24.38384 |
| Location: Orapa |
| Start Drill: 2004-09-08 |
| End Drill: 2004-09-09 |
| 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: 926 Metres |
| Borehole Water Strike: N/A |
| End of Hole (Depth): 143 Metres |
| Hole Diameter: 203 Millimetres |
| Log Formation: |
| No. | From (m) | To (m) | Log Formation |
|---|
| 1. | 0 | 20 | Cream-white, calcrete & fine grained calcretised Sandstone. |
| 2. | 20 | 40 | Pale-green-light-grey, silcretised Sandstone (pan sediments). Pale-green , colour redness with depth. |
| 3. | 40 | 51 | Light-grey, silcretised Sandstone, silcretisation redness with depth. Light-brown, fine medium grained moderately sorted Sandstone. |
| 4. | 51 | 63 | Light-grey to pale-yellow, siltstone. |
| 5. | 63 | 72 | Reddish-brown clay rich, weathered igneous rock (basalt). |
| 6. | 72 | 79 | Reddish-brown, weathered Basalt??? |
| 7. | 79 | 93 | Light-grey, fine grained, moderately sorted, micaceous Sandstone becoming loosely consolidated downwards.. |
| 8. | 93 | 95 | Pale green-light, fine grained moderately sorted Sandstone. |
| 9. | 95 | 108 | This unit becomes coarser towards its base. |
| 10. | 108 | 112 | Grey medium-coarse grained moderately-poorly sorted Sandstone. |
| 11. | 112 | 115 | Reddish-brown-grey, fine grained weathered (at the top) igneous rock becoming coarse crystalline (plagiaclase?) Gabbro? |
| 12. | 115 | 143 | Dark-grey, medium grained slightly coarse crystalline ( plagioclase feldspars???) Igneous Rock GABBRO ??? E.O.H. |
© Botswana Geoscience Institute 2024 | www.bgi.org.bw | Disclaimer