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 Borehole Number: 105/12/X072/H01

 
 Prospecting Company: De Beers Holdings Botswana
 Prospecting License No.: PL51/88
 Coordinates Type: WGS 84
 Coordinates Format: Decimal Degrees (DD)
 Coordinates: -20.998306 , 24.898687
 Location: Dwaga

 
 Start Drill: N/A
 End Drill: N/A
 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: N/A
 End of Hole (Depth): N/A
 Hole Diameter: N/A

 
 Log Formation:
No.From (m)To (m) Log Formation
1.0 3Yellowish brown, very fine-grained, clay-rich (cohesive) Sand mixed with weathered calcrete. No indicator minerals observed up to the end of hole.
2.3 5Pale green to light brown weathered calcrete and Silcrete.
3.5 12Pale green calcretised Silcrete (very hard) mixed with calcretised tabular shaped coarse grained Silcrete fragments.
4.12 22Light greenish to grey, medium to coarse grained calcretised Silcrete fragments, with high clay content.
5.22 30Greenish grey, medium to coarse grained calcretised Sandstone with tabular shaped (stalagmides and stalagtides like). Highly contaminated by the overlying Silcrete.
6.30 41Pale greenish to grey, very fine-grained calcretised Sandstone (very hard).
7.41 46Greenish brown, medium to coarse grained, moderately weathered igneous rock, characterised by calcite and metallic shiny platey minerals randomly oriented.- highly magnetic.(Dolerite or Basalt?)
8.46 64Dark grey to black, very fresh and competent igneus rock with shiny metallic mineral and calcite. The magnetic susceptibility of the unit is very high.
9.64 77Dark grey to black, very fresh and competent igneus rock with shiny metallic minerals decreasing with depth and calcite. The magnetic susceptibility of the unit is very high.

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