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 Borehole Number: 105/25/K004/1D/H4

 
 Prospecting Company: De Beers Holdings Botswana
 Prospecting License No.: PL31/88
 Coordinates Type: WGS 84
 Coordinates Format: Decimal Degrees (DD)
 Coordinates: -22.702943 , 27.897686
 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): 107 Metres
 Hole Diameter: N/A

 
 Log Formation:
No.From (m)To (m) Log Formation
1.0 1Red brown Topsoil with calcrete.
2.1 390% Amphiboliteibolite serpentinised olive green poorly macrocrystic kimberlite with highly variable inclusion content,30% kfspar gneiss.
3.3 75-10% kfspar.
4.7 9100% kfs gneiss.
5.9 13100% chloritised felsic gneiss.
6.13 16Inclusion variable, poorly phlog & ol macrocrystic kimberlite, TKB, kimberlite is difficult to characterise.
7.16 195% kfs.
8.19 22>99% pink gneiss.
9.22 23100% pink gneiss k coating.
10.23 2650% kfs and Amphiboliteibolite.
11.26 28>95% qf gneiss.
12.28 305% kfs.
13.30 3240% pink kfs.
14.32 3620% kfs.
15.36 3920% kfs Amphiboliteibolite.
16.39 4980% kfs.
17.49 54>95% kfs gneiss.
18.54 591% kfs & Amphiboliteibolite.
19.59 63Grey, generally features other than some
20.63 6910% kfspar.
21.69 73Inclusion rich olive green/grey kimberlite, TKB phlogopite bearing.
22.73 7850% kfs Amphiboliteibolite.
23.78 7980% Amphiboliteibolite & kfspar.
24.79 8099% bt/Amphiboliteib gneiss.
25.80 8190-95% inclusions.
26.81 8390% fine grain Amphiboliteibolite.
27.83 8495% kp gneiss.
28.84 8595% biotite bearing microcratic gneiss.
29.85 89Biotite bearing quartzo feldsparthic gneisses with rare chips of kimberlite - may only be contamination.
30.89 107Predominantly chloritised QF gneiss with 1-5% macrocrystic phlogoite bearing kimberlite.

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