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Exploration Borehole


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 Borehole Number: 105/17/X452/H01

 
 Prospecting Company: De Beers Holdings Botswana
 Prospecting License No.: PL57/98
 Coordinates Type: WGS 84
 Coordinates Format: Decimal Degrees (DD)
 Coordinates: -21.506601 , 24.470885
 Location: Kedia

 
 Start Drill: 2004-09-10
 End Drill: 2004-09-13
 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: 939 Metres
 Borehole Water Strike: N/A
 End of Hole (Depth): 141 Metres
 Hole Diameter: 165 Millimetres

 
 Log Formation:
No.From (m)To (m) Log Formation
1.0 5Grey-fine Sand & Topsoil with cream-white calcrete.
2.5 8Cream-white calcrete.
3.8 16Dark-grey fine but massive Silcrete & minor Sandy calcrete.
4.16 26Cream-white calcareous Sandstone. Note green "pan material" (Chlorite ? At 25m).
5.26 33Grey-pink fine grained calcretised Sandstone. Cream-white medium grained Sandy calcrete (but with) some pinkish input.
6.33 37Cream-white & pink calcareous Sandstone, pinkish fine to medium grained Sandstone.( colour intensity increases slightly downward.
7.37 62Reddish colour intensity increases downward, red-brown fine grained Sandstone, becomes coarser and bioturbated. Abundant Garnets seen in concentrate from this layer of lower Kalahari in +0.425-1.0mm fraction.
8.62 68Red-brown-yellowish siltstone, red-brown mudstone.
9.68 119Red-brown-greyish siltstone becomes dark-brown then greyish siltstone.
10.119 142Dark-grey fine grained pyritic -magnetic igneous rock (Basalt?).

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