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Exploration Borehole

 Borehole Number: 105/21/K004/H1

 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: 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 4Kalahari group - unconsolidated Sands.
2.4 12Kalahari group - Sandy calcretes.
3.12 13Kalahari group - playa Silcrete.
4.13 35Kalahari group - bioturbated lacustrine Sands with +2 -10 mm quartz granules and occassional playa Silcretes.
5.35 40Kalahari group - poorly sorted Sandstone, mass flow breccia and Silcretes.
6.40 52Crater zone kimberlite - Silcretes, kimberlite fragments.
7.52 60Crater zone kimberlite - wthrd kimberlite calcreted epiclastic kimberlite and Silcretes.
8.60 91Diatreme zone kimberlite - pervasively carbonatized primary kimberlite rich in purple Shale and bslt inclusions.
9.91 141Diatreme zone kimberlite - blue clay rich kimberlite with many bslt and Shale xenoliths.
10.141 161Diatreme zone kimberlite - dramatic change in appearance of kimberlite, altered light brown (siderite) material . Also calcite veining , brown/red Shale xenoliths.
11.161 166Diatreme zone kimberlite - grey carbonatized kimberlite.
12.166 203Diatreme zone kimberlite - brown (siderite rich ), calcite veined kimberlite. Much bslt and purple brown Shale xenoliths.

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