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Exploration Borehole


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 Borehole Number: 105/25/K004/1D/H2

 
 Prospecting Company: De Beers Holdings Botswana
 Prospecting License No.: PL31/88
 Coordinates Type: WGS 84
 Coordinates Format: Decimal Degrees (DD)
 Coordinates: -22.702593 , 27.897864
 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): 101 Metres
 Hole Diameter: N/A

 
 Log Formation:
No.From (m)To (m) Log Formation
1.0 1Brown Topsoil.
2.1 5Green macrocrystic kimberlite + kfs gneiss 2 degrees Fe stain qtz rubble.
3.5 21Olive green fresh (serpentinized) macrocrystic hypabyssal kimberlite inclusions 5-15% kfspar gneiss.
4.21 31Biotite bearing quartz - feldspathic gneiss.
5.31 35Dark grey macrocrystic kimberlite. Inclusions variable 95-40% pink kfs gneiss. Inclusions often small & angular possible hypabyssal breccia.
6.35 38Amphiboliteibolite.
7.38 44Dark grey macrocrystic hypabyssal brecciated kimberlite, 50% inclusions kfs gneiss.
8.44 49Green phlogopite rich macrocrystic hypabyssal kimberlite, 5% inclusions.
9.49 52Coarse grain Amphiboliteibolite.
10.52 91Olive green weakly macrocrystic hypabyssal kimberlite. Inclusions variable 60% small inclusions (often of order of 1mm). Appears brecciated at times.
11.91 101Brown grey evenly textured weakly macrocrystic, phlogopite bearing hypabyssal kimberlite 0-2% inclusions.

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