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Exploration Borehole


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 Borehole Number: 105/17/X552/H01

 
 Prospecting Company: De Beers Holdings Botswana
 Prospecting License No.: PL57/98
 Coordinates Type: WGS 84
 Coordinates Format: Decimal Degrees (DD)
 Coordinates: -21.489711 , 24.501044
 Location: Kedia

 
 Start Drill: 2004-09-02
 End Drill: 2004-09-07
 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: 940 Metres
 Borehole Water Strike: N/A
 End of Hole (Depth): 255 Metres
 Hole Diameter: 165 Millimetres

 
 Log Formation:
No.From (m)To (m) Log Formation
1.0 10Surface feature: Gentle depression Vegetation: Grass/shrubs. Black fine Sand & Topsoil (humid Sand) and buff powderlly calcretised fine Sand.
2.10 13Grey white-coated Silcrete.
3.13 19Cream-white calcrete & Silcrete.
4.19 28Dark-grey & mottled Silcrete and mottled medium grained calcretised Sandstone.
5.28 37Medium calcretised Sandstone and Sandy calcrete.
6.37 43Orange-pinkish fine to medium grained Sandstone.
7.43 51Pink-red-brown medium grained Sandstone with some gravel.
8.51 58Bioturbated coarse Sandstone, reddish, Chert and gravel.
9.58 62Very ( fine grained) dark-red siltstone.
10.62 74Red-brown medium grained Sandstone layrs in siltstone. Chert and gravel in Sandstone.
11.74 82Sandstone: fine grained, pale grey (shinny but not micaceous) becoming grey downwards.
12.82 90Major change to dark-red laminated mudstone/siltstone, grey fine Sandstone & red-dark (pink) siltstone intercalation. Water at 85m. Grey medium to coarse grained Sandstone.
13.90 97Grey fine grained Sandstone with minor gravels at the top. Typical alluvial gravel at the base.
14.97 120Mixture siltstone Sandstone. Red-brown siltstone slightly magnetic. Slight colour variations in places to red-brown (pinkish).
15.120 150Siltstone: Red-brown & some yellowish - greyish. Colour becomes dull downward toward brown.
16.150 159Brown-greyish, colour shifting toward greyish up to 159m.
17.159 176Essentially grey siltstone to 183m.
18.176 194Pale-grey siltstone.
19.194 197Beautifully laminated dark-brown slate-like siltstone. Note: red-laminated Shales.
20.197 205Grey siltstone with dark-brown & red/pink laminas,
21.205 219Dark-brown, very fine texture, some unidentified crystals up to 1mm. can be seen in this fine, brown matrix, note elevated magnetic suceptibility. A large but very weathered yellowish crystal (3mm in size) Texture indicates Igneous but not identifiable
22.219 241Grey & brown (pinkish) siltstone or grey-light-green. Essentially grey siltstone but with pinkish lenses.
23.241 255Grey, greenish (pale-green) and dark-green siltstone.

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