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Voorspoed Mine, Kroonstad, Fezile Dabi District, Free State, South Africai
Regional Level Types
Voorspoed MineMine
Kroonstad- not defined -
Fezile Dabi DistrictDistrict
Free StateProvince
South AfricaCountry

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Key
Latitude & Longitude (WGS84):
27° 23' 22'' South , 27° 11' 28'' East
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
PlacePopulationDistance
Kroonstad103,992 (2012)29.3km
Viljoenskroon54,955 (2012)31.3km
Koppies11,445 (2012)41.2km
Vredefort10,649 (2012)45.7km
Owned/operated by:
De Beers Group of Companies (85%) - a group of companies owned by Anglo American plc


A small diamond mine in a kimberlite pipe, owned by De Beers. The pipe forms part of a cluster of eleven intrusions, most of which are uneconomic. It was discovered in 1906 and worked for about 5 years through weathered ground and a concentration zone near the surface. Below 40 feet, when fresher hard kimberlite was encountered, the diamond grades dropped dramatically, forcing the mine to close in 1912. It was subsequently acquired by De Beers and is currently being redeveloped as a new mine.

Located north of Kroonstad.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


2 valid minerals.

Detailed Mineral List:

Diamond
Formula: C
Reference: Field, M., Stiefenhofer, J., Robey, J., and Kurszlaukis, S. (2008): Ore Geology Reviews 34, 33-75.
Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
Reference: Field, M., Stiefenhofer, J., Robey, J., and Kurszlaukis, S. (2008): Ore Geology Reviews 34, 33-75.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Diamond1.CB.10aC
Group 9 - Silicates
Phlogopite9.EC.20KMg3(AlSi3O10)(OH)2

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Semi-metals and non-metals
Diamond1.3.6.1C
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Phlogopite71.2.2b.1KMg3(AlSi3O10)(OH)2

List of minerals for each chemical element

HHydrogen
H PhlogopiteKMg3(AlSi3O10)(OH)2
CCarbon
C DiamondC
OOxygen
O PhlogopiteKMg3(AlSi3O10)(OH)2
MgMagnesium
Mg PhlogopiteKMg3(AlSi3O10)(OH)2
AlAluminium
Al PhlogopiteKMg3(AlSi3O10)(OH)2
SiSilicon
Si PhlogopiteKMg3(AlSi3O10)(OH)2
KPotassium
K PhlogopiteKMg3(AlSi3O10)(OH)2

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Field, M., Stiefenhofer, J., Robey, J., and Kurszlaukis, S. (2008): Kimberlite-hosted diamond deposits of southern Africa: A review. Ore Geology Reviews 34, 33-75.

External Links


Other Regions, Features and Areas containing this locality

Somali PlateTectonic Plate
South Africa

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