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Exploration Borehole


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 Borehole Number: 105/18/X169/H1

 
 Prospecting Company: De Beers Holdings Botswana
 Prospecting License No.: PL001/97
 Coordinates Type: WGS 84
 Coordinates Format: Decimal Degrees (DD)
 Coordinates: -21.48646 , 25.850732
 Location: Orapa

 
 Start Drill: 1900-01-02
 End Drill: N/A
 Borehole Type: Exploration
 Drilling Method: Percussion & Core
 Sample Type: Core & Chips
 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): 80 Metres
 Hole Diameter: N/A

 
 Log Formation:
No.From (m)To (m) Log Formation
1.0 2Mainly cream-white calcretised Kalahari sandstone, matrix supported, immature.
2.2 15Purplish-grey, silcretised, calcretised sandstone.
3.15 18Calcrete sandstone.
4.18 26Reddish-orange siltstone horizone with calcretised and silcretised sandstone.
5.26 31Pinkish Kalahari sandstone, immature, matrix supported, aeolian texture.
6.31 42Immature, matrix supported, aeolian sandstone, some silcretised and calcretised horizons.
7.42 46Highly weathered, purplish, amygdaloidal basalt with yellowish-green alteration,down hole sandstone contamination.
8.46 48Fresh microcrystalline basalt, yellowish alteration still persists.
9.48 56Much finer-grained amygdaloidal basalt.
10.56 67Dull purplish-grey or yellowish, weathered, amygdaloidal basalt.
11.67 75Fine-grained amygdaloidal basalt.
12.75 80Fresh microcrystalline basalt. E.O.H

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