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Exploration Borehole

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 Borehole Number: 105/12/X010/H1

 Prospecting Company: De Beers Holdings Botswana
 Prospecting License No.: PL51/88
 Coordinates Type: WGS 84
 Coordinates Format: Decimal Degrees (DD)
 Coordinates: -20.72961 , 24.12966
 Location: Matlapana

 Start Drill: 1900-01-02
 End Drill: 1900-01-02
 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): 145 Metres
 Hole Diameter: N/A

 Log Formation:
No.From (m)To (m) Log Formation
1.1 4Upper Kalahari - Sandy calcrete.
2.4 19Predominantly white pan clay, some playa Silcrete Sandy calcrete with minor brown playa Silcrete.
3.19 27Tuffaceous calcrete.
4.27 32Tuffaceous calcrete, with Silcrete pebbles.
5.32 36Tuffaceous calcrete, some pan clay.
6.36 46Green brown Silcreted calcrete, playa Silcrete (cryptocrystalline) grey black Sandy Silcrete.
7.46 59White cryptocrystalline Silcrete, some pan clay.Cryptocrystalline Silcrete. . Rhumbohedral concretions after dolomite.
8.59 62Green pan clay with cryptocrystalline Silcrete.
9.62 102Green pan clay, cryptocrystalline Silcrete, quartz arenite. Rhombohedral concretes after dolomite Silcreted calcrete.
10.102 105Concretions, quartz arenite, pan clay massive bioturbated quartz arenite with Silcrete.
11.105 110Massive Silcrete concretions, playa Silcrete.
12.110 120As above with pyrite unfilled padotubes Quartz arenite.
13.120 123Silcreted calcrete or Silcretezd quartz wache.
14.123 145Green highly silicified and serpentinised dolerite veined with quartz and epidote (?) evident plagrodase laths

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