| Borehole Number: |
| Prospecting Company: De Beers Holdings Botswana |
| Prospecting License No.: PL78/88 |
| Coordinates Type: WGS 84 |
| Coordinates Format: Decimal Degrees (DD) |
| Coordinates: -22.637167 , 21.4905 |
| Location: Ghanzi |
| 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 | 4 | Kalahari group - unconsolidated Sands. |
| 2. | 4 | 12 | Kalahari group - Sandy calcretes. |
| 3. | 12 | 13 | Kalahari group - playa Silcrete. |
| 4. | 13 | 35 | Kalahari group - bioturbated lacustrine Sands with +2 -10 mm quartz granules and occassional playa Silcretes. |
| 5. | 35 | 40 | Kalahari group - poorly sorted Sandstone, mass flow breccia and Silcretes. |
| 6. | 40 | 52 | Crater zone kimberlite - Silcretes, kimberlite fragments. |
| 7. | 52 | 60 | Crater zone kimberlite - wthrd kimberlite calcreted epiclastic kimberlite and Silcretes. |
| 8. | 60 | 91 | Diatreme zone kimberlite - pervasively carbonatized primary kimberlite rich in purple Shale and bslt inclusions. |
| 9. | 91 | 141 | Diatreme zone kimberlite - blue clay rich kimberlite with many bslt and Shale xenoliths. |
| 10. | 141 | 161 | Diatreme zone kimberlite - dramatic change in appearance of kimberlite, altered light brown (siderite) material . Also calcite veining , brown/red Shale xenoliths. |
| 11. | 161 | 166 | Diatreme zone kimberlite - grey carbonatized kimberlite. |
| 12. | 166 | 203 | Diatreme zone kimberlite - brown (siderite rich ), calcite veined kimberlite. Much bslt and purple brown Shale xenoliths. |
© Botswana Geoscience Institute 2024 | www.bgi.org.bw | Disclaimer