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Exploration Borehole


	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

Dark brown clayey Topsoil.

Yellow calc/silc basement frag + qtz, Amphibolite, kfspar.

Predominantly 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.

Kimberlite 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% inclusions.

20% inclusions

10% inclusions.

5% inclusions.

Fresh grey - green, features hypabyssal kimberlite.

10.

90% inclusions pale green chloritic qtz.

11.

95% inclusions.

12.

Amphiboliteibolite and k-fspar - xenolith.

13.

52m 20% inclusions.

14.

Amphiboliteibolite - xenolith.

15.

20% inclusions

16.

20% inclusions - green layered microcrystalline qtz.

17.

5% inclusions.

18.

20% inclusions.

19.

40% inclusions.

20.

Grey, features, phlogopite bearing hypabyssal kimberlite.

21.

20% inclusions.

22.

50% inclusions.

23.

95% inclusions.

24.

30% inclusions.

25.

110

Fine, grey, features, phlogopite bearing hypabyssal kimberlite. Inclusions variable 95-5% Amphiboliteibolite and k-feldspar.