Picture Not Available
Welcome | Search Borehole BGI | Exploration Borehole

Exploration Borehole

Print PDF
 Borehole Number: 105/25/K003/1A/H2

 Prospecting Company: De Beers Holdings Botswana
 Prospecting License No.: PL31/88
 Coordinates Type: WGS 84
 Coordinates Format: Decimal Degrees (DD)
 Coordinates: -22.704432 , 27.883483
 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.
2.1 3Nodular silc/calcrete.
3.3 9Predominantly yellow green Clays (3-9m) olive brown - green weathered brecciated macro - crystic kimberlite + 40% inclusions k - feldspar, Amphibolite, qtz.
4.9 289-26 predominantly green kimberlitic Clays, weathered, brecciated, brown kimberlite. Chips tend to be v.angular where chips break around surface of inclusions. This weathered brown kimberlite often has the appearance of a soft immature Sandstone. Sometime
5.28 54Moderately fresh to fresh kimberlite.
6.54 56Dark olive green - grey generally features, phlogopite bearing kimberlite. Other than occasional
7.56 62Pale green chloritic feldspar - xenolith.
8.62 67Olive green, phlogopite bearing, features kimberlite.
9.67 71Green mottled, chloritic, Amphiboliteibole bearing feldspar + qtz (feldsite).
10.71 85Drab olive green, phlogopite bearing, featureless hypabyssal kimberlite. Phlogopite content appears to be increasing downwards, inclusions 10% kfs, qtz.
11.85 8785m propable xenolith, green mottled chloritised Amphiboliteibole bearing felsite.
12.87 9087m 80% of sample is green mottled felsite - xenolith.

© Botswana Geoscience Institute 2024 | www.bgi.org.bw | Disclaimer