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Exploration Borehole


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 Borehole Number: 105/21/X001
 
 Prospecting Company: De Beers Holdings Botswana
 Prospecting License No.: PL78/88
 Coordinates Type: WGS 84
 Coordinates Format: Decimal Degrees (DD)
 Coordinates: -22.53187 , 21.72927
 Location: Ghanzi
 
 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 30No chips recovery for the first 30m of this hole. - Predominantly loose Sands with minor calcretised Sands.
2.30 60No chips recovered for this interval. 30-70m- loose Kalahari Sands and minor calcrete (casing put down to 71m).
3.60 68No chip recovery-loose Kalahari Sands and minor calcrete.
4.68 72Pale pink-very fine to very fine grained Sandstone with some occasional fragments of milky quartz (with siltstone).
5.72 74As above but red-pink in colour and occasionally mottled with cream spotting.
6.74 75Becoming yellow.
7.75 82Becoming pale yellow to light grey very fine Sandstone to siltstone.
8.82 86Very finely laminated occasionally silty grey mudstone.
9.86 90Medium to dark red fine grained Sandstone- though occasionally medium-coarse and gritty Sandstone.
10.90 92Grey-pink very fine to coarse (occ Conglomerateeratic) Sandstone.
11.92 93Pink-yellow predominantly fine grained Sandstone.
12.93 94Pink-grey silty mudstone.
13.94 96As above with visible very fine laminations.
14.96 98Becoming a dirty brown laminated mudstone.
15.98 101Light to medium grey mudstone.
16.101 103(As seen at 89m)- med-dark red Sandstone (fine to gritty).
17.103 104Back to a grey laminated mudstone.
18.104 105Pink-red laminated mudstone- occasionally silty layers seen (less than 0-1mm thick). Occasionally yellow.
19.105 107wthrd mudstone with what appears to be a very wthrd and altered (?) dolerite.
20.107 120A fairly uniform rock (as above)- probably dolerite-though it appears altered-looks green-grey with occasional red patches. A poorly developed Schistose fabric can be seen throughout.
21.120 200As above. Fairly uniform green-grey, occasionally red medium to coarse altered (?) dolerite.

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