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Exploration Borehole


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 Borehole Number: 105/18/X639/H01

 
 Prospecting Company: De Beers Holdings Botswana
 Prospecting License No.: PL001/97
 Coordinates Type: WGS 84
 Coordinates Format: Decimal Degrees (DD)
 Coordinates: -21.295455 , 25.515186
 Location: Orapa

 
 Start Drill: 2005-08-17
 End Drill: 2005-08-18
 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: 960 Metres
 Borehole Water Strike: 62 Metres
 End of Hole (Depth): 77 Metres
 Hole Diameter: 165 Millimetres

 
 Log Formation:
No.From (m)To (m) Log Formation
1.0 3Dark brown, fine to medium grained loose Sand.
2.3 5Yellowish brown, fine to medium grained loose Sand.
3.5 10Dark cream white, calcretised Silcrete and calcrete.
4.10 12Cream white weathered calcrete.
5.12 19Very dark brown, weathered Basalt.
6.19 34Greyish greenish, fresh and competent Basalt.
7.34 43Brownish green, fresh and competent Basalt, the clay content is high.
8.43 55Greyish greenish, fresh and competent Basalt with high clay content.
9.55 60Greyish green Basalt mixed with reddish brown, oxidised Basalt.
10.60 62Reddish brown, oxidised Basalt mixed with brownish Sandstone fragments.
11.62 63Brownish, fine-grained, weathered Sandstone.
12.63 64Yellowish, fine-grained, weathered Sandstone.
13.64 77Pinkish brown, fine-grained, weathered Sandstone. Gravel size fragments falling from water strike zone are abundant.

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