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Exploration Borehole


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 Borehole Number: 105/25/K003/1A/H3

 
 Prospecting Company: De Beers Holdings Botswana
 Prospecting License No.: PL31/88
 Coordinates Type: WGS 84
 Coordinates Format: Decimal Degrees (DD)
 Coordinates: -22.704448 , 27.883129
 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 2Dark brown clayey Topsoil.
2.2 5Yellow calc/silc basement frag + qtz, Amphibolite, kfspar.
3.5 23Predominantly olive green clay highly weathered green/brown, mottled, gritty kimberlite (gritty in sense that it looks like immature Sandstone) inclusions variable 20-80% kfspar, Amphiboliteibolite.
4.23 29Kimberlite is mod fresh - fresh below 23m, olive green - grey generally features hypabyssal kimberlite. Inclusions variable 95-5% k-fspar and Amphiboliteibolite. Kimberlite is phlogopite bearing books up to 5mm observed.
5.29 305% inclusions.
6.30 3220% inclusions
7.32 3310% inclusions.
8.33 385% inclusions.
9.38 40Fresh grey - green, features hypabyssal kimberlite.
10.40 4690% inclusions pale green chloritic qtz.
11.46 4895% inclusions.
12.48 50Amphiboliteibolite and k-fspar - xenolith.
13.50 5152m 20% inclusions.
14.51 53Amphiboliteibolite - xenolith.
15.53 5920% inclusions
16.59 6220% inclusions - green layered microcrystalline qtz.
17.62 655% inclusions.
18.65 7020% inclusions.
19.70 7240% inclusions.
20.72 79Grey, features, phlogopite bearing hypabyssal kimberlite.
21.79 8220% inclusions.
22.82 8550% inclusions.
23.85 8995% inclusions.
24.89 9730% inclusions.
25.97 110Fine, grey, features, phlogopite bearing hypabyssal kimberlite. Inclusions variable 95-5% Amphiboliteibolite and k-feldspar.

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