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Exploration Borehole


	Borehole Number: 105/25/K003/1A/H12


	Prospecting Company: De Beers Holdings Botswana
	Prospecting License No.: PL31/88
	Coordinates Type: WGS 84
	Coordinates Format: Decimal Degrees (DD)
	Coordinates: -22.704074 , 27.883131
	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

Topsoil

Some green clay + phlogopites - kimbelite breccia?

Polymict breccia - felsic gneiss, quartzite, Schist.

Decomposed light grey clay abundant - non - kimberlitic.

The remainder of the hole (except 94-95m) consists of entirely fariable, quartz, biotite Schist are pink feldspar gneiss in varying proportions. The Schist is generally most abundant.

(pfg - pink feldspar gneiss qz - biot = quartz biotite Schist.)

90% qz - biot - Schist, 10% pf gneiss.

Small percentage laminated clay - decomposed Schist.

100% pfg

10.

60% Schist + 40% pfg.

11.

80% pfg, 20% Schist.

12.

>90% qz biot - sch.

13.

Schist is sulphide bearing.

14.

100% Schist.

15.

90% Schist but approximately 10% of featureless, light brown, non - foliated, phlog bearing kimberlite. Definitely not Schistose sample submitted for petrography under consignment no mak/92/043.

16.

110

From 95m - EOH at 110m is dominantly qz - fsp biot - Schist with the occosional pfg inclusions.