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 Borehole Number: 105/25/K003/1A/H7

 
 Prospecting Company: De Beers Holdings Botswana
 Prospecting License No.: PL31/88
 Coordinates Type: WGS 84
 Coordinates Format: Decimal Degrees (DD)
 Coordinates: -22.704827 , 27.883137
 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.
2.2 4Weakly calcretised kimberlite, Amphiboliteibolite.
3.4 5Olive green weathered kimberlite.
4.5 740% inclusions (k-fspar)
5.7 12Greenish kimberlite (chloritisation) and pink (kfs) fibre gneiss - xenolith.
6.12 1940% incl (kfs, Amphibolitei).
7.19 23Olive green, weathered, black mottled, non - macrocrystic, phlogopite bearing hypabyssal kimberlite. 30% incl (kfs Amphiboliteib).
8.23 2495% incl (fibre gneiss).
9.24 26100% incl (fibre gneiss in k coatings).
10.26 27Moderately weathered green/brown inclusion rich kimberlite.
11.27 2920% incl (kfs Amphiboliteib).
12.29 3210% incl (kfs Amphiboliteib).
13.32 33Fresh dark grey - green features, phlogopite bearing hypabyssal kimberlite.
14.33 3650% incl (kfs, Amphibolite, green cryptocrystalline silica).
15.36 3990% incl (kfs, Amphiboliteib).
16.39 41Pink & green felsic gneiss - xenolith.
17.41 4340% incl (kfs, gneiss).
18.43 4410% incl (kfs ).
19.44 4660% incl (kfs, green fsp, Amphibolite).
20.46 4940% icl (kfs, Amphibolite).
21.49 53Significant drop in % inclusions otherwise k remain same.
22.53 555% incl (kfs).
23.55 590% incl
24.59 6450% incl (kfs, Amphibolite, green cryptocrystalline silica).
25.64 690% incl
26.69 70Dark grey, phlogopite beaing, evenly textured, inclusion poor hypabyssal kimberlite.
27.70 79
28.79 8920% incl (grey coated (k) quartz).
29.89 942% incl.
30.94 96Dark grey, features, hypabyssal kimberlite as described above.
31.96 995% incl (kfs, Amphibolite).
32.99 1041% incl (kfs, Amphibolite).
33.104 11120% incl (kfs, Amphibolite).

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