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Exploration Borehole


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 Borehole Number: 105/18/X623/H01
 
 Prospecting Company: De Beers Holdings Botswana
 Prospecting License No.: PL001/97
 Coordinates Type: WGS 84
 Coordinates Format: Decimal Degrees (DD)
 Coordinates: -21.429931 , 25.560861
 Location: Orapa
 
 Start Drill: 2005-04-04
 End Drill: 2005-04-05
 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: 995 Metres
 Borehole Water Strike: 30 Metres
 End of Hole (Depth): 161 Metres
 Hole Diameter: 165 Millimetres
 
 Log Formation:
No.From (m)To (m) Log Formation
1.0 1Medium yellowish brown fine grained Sand.
2.1 5Light grey creamish weathered calcrete.
3.5 7Medium yellowish grey weathered basalt.
4.7 10Light yellowish brown calcite rich weathered basalt (moderate competent).
5.10 16Yellowish brown to greyish red moderate competent basalt (amygdals and calcite rich).
6.16 27Dark grey competent basalt, calcite contain.
7.27 47Very dark greyish blue fresh basalt highly competent.
8.47 48Medium greyish brown fresh basalt.
9.48 53Dark brown greyish fresh competent basalt comprising abundant basalt.
10.53 56Dark grey fresh highly competent basalt.
11.56 58Dark greyish green fresh gabbro comprising few pyrite.
12.58 61Medium greyish brown fresh basalt.
13.61 78Dark greyish to light green competent basalt fine grained.
14.78 81Medium reddish brown competent basalt.
15.81 82Light brown fine grained Sandstone weathered layer.
16.82 83Dark brownish moderately competent basalt.
17.83 85Dark brown fresh basalt with few calcite.
18.85 87Medium brown to light yellow weathered Sandstone.
19.87 88Greyish brown moderate competent fresh basalt.
20.88 91Dark brown amygdaloidale competent fresh basalt.
21.91 98Dark grey fresh basalt highly competent with few amygdals and calcite.
22.98 104Dark greyish blue fresh amygdaloidale basalt highly competent.
23.104 113Mixture (in alternance) of light grey gabbro with dark grey competent basalt (amygdals present and few pyrite observed).
24.113 118Very dark grey fresh competent basalt.
25.118 120Medium brownish grey amygdaloidale basalt.
26.120 123Dark greyish brown fresh competent basalt.
27.123 124Light greenish grey fresh gabbro (pyrite observed).
28.124 129Dark greyish brown fresh competent basalt plus fewamygdals.
29.129 137Very dark grey blackish fresh competent basalt.
30.137 138Dark brown fresh basalt high competent.
31.138 141Dark reddish brown fine grained basalt comprising few amygdals.
32.141 142Light brown competent basalt.
33.142 143Dark brown fresh competent basalt.
34.143 144Light pink weathered Sandstone fine grained.
35.144 145Light yellowish orange weathered Sandstone.
36.145 150Light red fine grained weathered Sandstone.
37.150 161Very light yellow fine grained weathered Sandstone.

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