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Exploration Borehole

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 Borehole Number: 105/25/K003/1A/NDF

 Prospecting Company: De Beers Holdings Botswana
 Prospecting License No.: PL31/88
 Coordinates Type: WGS 84
 Coordinates Format: Decimal Degrees (DD)
 Coordinates: -22.704901 , 27.881476
 Location: Lerala

 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 1Brown Topsoil with qtz & fsp fragments.
2.1 3Nodular calcretised & silicified Sand & burnt fragments.
3.3 9Silicified and calcretised Sand - much granular quartz in silicified matrix. Traces of a greenish, black mottled, silicified rock - Amphiboliteibolite.
4.9 12Highly to moderately weathered mica rich, qtz fspar + Amphiboliteibole bearing, foliated rock.
5.12 13Biotite - Amphiboliteibolite Schist.
6.13 30Weathered product as ++ greenish Clays.
7.30 32Fine grained, featureless foliated - easily chewable rock. Chl visible under microscope.
8.32 34Chlorite Schist.
9.34 37Dark grey, medium grained quartzite.
10.37 47Quartzite
11.47 55Quartz - feldspar - biotite Schist.
12.55 60Med grained - equigranular Amphiboliteibolite.
13.60 69Qtz - fspar - bt Schist.
14.69 71Amphiboliteibolite
15.71 88Altered chloritic quartzo - feldspathic rocks.
16.88 110Migmatitic Amphiboliteibolite.

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