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Exploration Borehole


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 Borehole Number: 105/17/X919/H01

 
 Prospecting Company: De Beers Holdings Botswana
 Prospecting License No.: PL107/96
 Coordinates Type: WGS 84
 Coordinates Format: Decimal Degrees (DD)
 Coordinates: -21.36651 , 25.203809
 Location: Orapa

 
 Start Drill: 2005-03-16
 End Drill: 2005-03-17
 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: 978 Metres
 Borehole Water Strike: 59 Metres
 End of Hole (Depth): 83 Metres
 Hole Diameter: 165 Millimetres

 
 Log Formation:
No.From (m)To (m) Log Formation
1.0 1Dark brown top Topsoil mixed few Silcrete.
2.1 4Pale yellow creamish Silcrete calcretised.
3.4 5Pale yellow moderate competent weathered basalt.
4.5 8Dark brown yellowish calcite rich basalt.
5.8 14Pale yellow calcite abundant weathered basalt moderate competent.
6.14 19Yellowish brown moderate competent weathered basalt.
7.19 23Greyish yellow weathered basalt comprising few amygdals plus calcite.
8.23 29Dark brownish grey fresh competent basalt.
9.29 30Dark grey competent basalt.
10.30 32Dark yellowish olive weathered basalt.
11.32 37Yellowish brown weathered basalt calcite contain.
12.37 41Ligth yellowish orange weathered basalt.
13.41 46Dark grey blueish fresh competent kimberlite? (homogeneous).
14.46 47Yellowish grey weathered kimberlite.
15.47 51Dark grey blueish fresh competent kimberlite.
16.51 52Yellow greyish weathered kimberlite.
17.52 58Dark grey blueish fresh competent homogenous kimberlite.
18.58 61Light grey pyroclastic kimberlite more less competent, karoo sediment observed.
19.61 65Medium brownish pink weathered fine grained Sandstone.
20.65 75Light yellowish grey fine grained weathered Sandstone.
21.75 78Light yellowish grey to olive weathered Sandstone.
22.78 81Light red brownish moderate competent mudstone.
23.81 83Light greenish brown weathered mudstone.

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