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Exploration Borehole


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 Borehole Number: 105/17/X556/H01

 
 Prospecting Company: De Beers Holdings Botswana
 Prospecting License No.: PL57/98
 Coordinates Type: WGS 84
 Coordinates Format: Decimal Degrees (DD)
 Coordinates: -21.42964 , 24.508761
 Location: Kedia

 
 Start Drill: 2004-09-15
 End Drill: 2004-09-17
 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): 125 Metres
 Hole Diameter: 165 Millimetres

 
 Log Formation:
No.From (m)To (m) Log Formation
1.0 4Cream-white & grey Topsoil (humic) and calcrete.
2.4 8Cream-white calcrete & dark-grey Silcrete (Chert nodules) up to 3cm rounded and pale-orange silica.
3.8 14Off-white Sandy calcrete, grey orange massive Silcrete & dark-grey Silcrete.
4.14 16Grey rounded Silcrete pebbles.
5.16 22Grey & pinkish fine to medium grained silcretised Sandstone.
6.22 26Cream-white fin grained Sandstone.
7.26 30Pink brown fine grained Sandstone, colour intensity increases downward.
8.30 38Pink-brown fine Sandstone (colour intensity increases downward) also Sandstone coarsens downward to 36-37m.
9.38 42Dark-grey- very fine grained and bedded (not laminated) Sandstone. Drinkable water strike at 41m.
10.42 48Lower Kalahari, massive Silcrete large fragments in this layer. Large Chert pebbles, silica- quartz, sub-rounded gravels. Kalonda equivalent.
11.48 80Grey yellowish brownish weathered ingeous rock becoming dark green downwards. Texture: Very fine Groundmass: green Phenocrysts: dark green Concntrate: No indicators seen Magnetic
12.80 112Red-brown pinkish, non-magnetic siltstone.
13.112 125Brown-greyish siltstone becomes grey downward.

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