| Borehole Number: |
| Prospecting Company: De Beers Holdings Botswana |
| Prospecting License No.: PL31/88 |
| Coordinates Type: WGS 84 |
| Coordinates Format: Decimal Degrees (DD) |
| Coordinates: -22.704847 , 27.882753 |
| 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 | Topsoil |
| 2. | 0 | 2 | Brown Topsoil. |
| 3. | 1 | 8 | Calcretised QF gneiss. |
| 4. | 2 | 8 | Weakly calcretised quartzo - feldspathic gneiss in a fine Sandy yellowish calcretised matrix large angular gneiss fragments (>2cm) in internal 1-4m. |
| 5. | 8 | 9 |
| 6. | 8 | 11 | Highly inclusion rich weathered kimberlite. |
| 7. | 9 | 11 | Predominantly pale green amorphous banded silica and qtz + 2% pink kfs. |
| 8. | 11 | 13 | 11-12m kimberlite. |
| 9. | 11 | 44 | Inclusion rich diameter facies kimberlite. |
| 10. | 13 | 29 |
| 11. | 29 | 30 | 30m - 30-40% kimberlite. |
| 12. | 30 | 33 | Moderately fresh k below 30m. |
| 13. | 33 | 40 | 1-5% moderately fresh grey featureless kimberlite in 99-95% inclusions kfs, qtz. |
| 14. | 40 | 44 | 41m - apperance in inclusions of green amorphous banded silica. |
| 15. | 44 | 45 | Increase in % kimberlite from 44m. |
| 16. | 44 | 111 | Hypabyssal kimberlite. |
| 17. | 45 | 49 | 45m 30% k. |
| 18. | 49 | 52 | 80% k, generally featureless coarsely textured grey/dark grey, phlogopite bearing, hypabyssal kimberlite (olivine not seen). |
| 19. | 52 | 56 | 1% k, inclusions variable |
| 20. | 56 | 59 | 80% k. |
| 21. | 59 | 62 |
| 22. | 62 | 65 | 10% k. |
| 23. | 65 | 69 | 95% k. |
| 24. | 69 | 74 | 30% k. |
| 25. | 74 | 98 | Grey, featureless hypabyssal kimberlite. Variable inclusions 90% - 5% inclusions. |
| 26. | 98 | 99 | 95% k. |
| 27. | 99 | 110 | Grey featureless hypabyssal kimberlite. |
| 28. | 110 | 111 | 95% k. |
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