| Borehole Number: |
| Prospecting Company: De Beers Holdings Botswana |
| Prospecting License No.: PL31/88 |
| Coordinates Type: WGS 84 |
| Coordinates Format: Decimal Degrees (DD) |
| Coordinates: -22.704783 , 27.883131 |
| Location: Lerala |
| Start Drill: 0000-00-00 |
| End Drill: 0000-00-00 |
| 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: Metres |
| End of Hole (Depth): N/A |
| Hole Diameter: Millimetres |
| Log Formation: |
| No. | From (m) | To (m) | Log Formation |
|---|
| 1. | 0 | 1 | Brown Topsoil. |
| 2. | 1 | 3 | 1-8m calcretised Sand & basement fragments. |
| 3. | 3 | 4 | 4-5m entirely tabular, angular plagioclase chips brown/green colour in calcretised matrix. |
| 4. | 4 | 5 | 5-8m plag fspar + 40% quartz. |
| 5. | 5 | 8 | Pink k-fspar and quartz + chloritised (greenish) biotite, bearing plag. |
| 6. | 8 | 10 | Felsic gneiss. |
| 7. | 10 | 12 | 12-21m compicuous by increase in grey Clays adhering to chips. |
| 8. | 12 | 13 | Weathered dark brown/green macrocrystic brecciated kimberlite with varying proportions of inclusions of kfspar, qtz and Amphiboliteibolite. |
| 9. | 13 | 17 | 13-17m 90% inclusions 17m-50% incl. 18m-10%. |
| 10. | 17 | 18 | 19m-20% inclusions. |
| 11. | 18 | 19 | Kimberlite breccia. |
| 12. | 19 | 20 | 21-20% inclusions. |
| 13. | 20 | 21 | Sudden change in nature of inclusions - much larger chips on 5% kimberlite. |
| 14. | 21 | 22 | 95% inclusions - granish plag, red kfs. |
| 15. | 22 | 24 | Kimberlite breccia. |
| 16. | 24 | 26 | 26m-50% inclusions. |
| 17. | 26 | 28 | Predom red kfspar + minor kimberlite chips, but suspected contamination. Wall rock contact prods? |
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