+86 0371 8654 9132

kimberlite crusher south africa

Tectonic controls on kimberlite location, southern Africa ...

2002-10-1  The 035°-trending kimberlite corridors are sub-parallel to the south east coastline of South Africa and oceanic fracture zones, suggesting an association of on-land extensions and off-shore fracture zones (Marsh, 1973). Narrow well-defined corridors trending 175° (±15°) are prominent off-craton but less well-defined on-craton.

More

Botswana Diamonds: South African kimberlite exploration ...

2017-7-21  Two 200 m deep, large diameter 13 inch boreholes were drilled on kimberlite AK 21 to test the diamond grade at depth. 80 t of material were collected but the analysis in South Africa

More

KIMBERLITES NEAR SIKERETI, NORTH-EASTERN SOUTH

2016-6-16  kimberlite indicator minerals in those regions of South West Africa/Namibia which are covered by Kalahari de-posits, CDM Prospecting (Pty) Ltd during 1975 carried out regional mapping and soil sampling in the north-eastern portion of the Territory. In the course of this work a geological reconnaissance map of Area 1920, to

More

Geology of the Kroonstad kimberlite cluster, South Africa.

Location of the Kroonstad Kimberlite Cluster (KKC) relative to the major kimberlite provinces on the Kaapvaal Craton (pale brown), South Africa (grey). Distribution of the Karoo Supergroup in the...

More

The discovery of South Africa’s first four kimberlite pipes

2010-6-11  South Africa’s two other great kimberlite pipes were discovered some months later. The two pipes, which would become known as the De Beers and

More

Mothae Kimberlite Mine, Lesotho - Mining Technology

2020-10-26  The Mothae mine is a kimberlite diamond mine located in Lesotho, Africa. It is owned by Lucapa Diamond Company (70%) in partnership with the Government of the Kingdom of Lesotho (30%). Discovered by Basutoland Diamonds in 1961, the mine is a source of large and premium-value diamonds such as the rare Type IIa whites and coloured gems.

More

(PDF) Petrology of the hypabyssal kimberlite of the ...

The Kroonstad Group II Kimberlite Cluster is located 30 km north- east from the town of Kroonstad in the Free State Province of South Africa (Fig. 1) and is made up of six pipes and numerous...

More

Petrology of the hypabyssal kimberlite of the Kroonstad ...

2011-7-1  The Kroonstad Group II Kimberlite Cluster is located 30 km north-east from the town of Kroonstad in the Free State Province of South Africa (Fig. 1) and is made up of six pipes and numerous intrusive dykes/sills. The six pipes are the Lace, Voorspoed, Besterskraal North, Silverbank, Normandien and Grootbosch.

More

Petrology and geochemistry of eclogite xenoliths from the ...

2007-3-21  The Rietfontein kimberlite and xenoliths. The Rietfontein kimberlite is located at 26.75°S, 20.04°E, approximately 2 km east of the South Africa–Namibia border in the Northern Cape province of South Africa (Fig. 1).This is ∼200 km west of the inferred margin of the Kaapvaal craton (Fig. 1) in an area where Kalahari sands and Karoo-age sedimentary rocks obscure the nature of crystalline ...

More

jaw crusher for kimberlite ore,

Mobile crushers to crush kimberlite activeimtMobile crusher to crush kimberliteKuntang qj241 mobile jaw crusherThe qj241 is the most compact unit in the world leading series of jaw crushers from kuntangSpecifically designed for the smaller chat now mobile crushers in south africa balaji logisticsResults 1 20 of 871 crushing. More

More

New kimberlite pipe discovered at Thorny River in South

2020-12-2  New kimberlite discovered. Botswana Diamonds has reported the discovery of a new kimberlite “blow” located on its Thorny River project in South Africa. The blow was discovered during recent drilling programme and covers a target area of 0.4 ha.

More

“Kimberlite” and the Source of the Diamond in South

THE origin of the volcanic pipes of South Africa and the genesis of the diamonds contained in their “blue-ground” filling are as productive of controversy as that other geological puzzle—the ...

More

Palmietfontein kimberlite pipe, South Africa; a case ...

The Palmietfontein kimberlite pipe is located 150 km northwest of Johannesburg, South Africa. It was emplaced at the contact between mafic rocks of the Bushveld complex and syenites of the Pilanesberg complex, and coincides with the intersection of two major faults.

More

Botswana Diamonds: South African kimberlite exploration ...

2017-7-21  Two 200 m deep, large diameter 13 inch boreholes were drilled on kimberlite AK 21 to test the diamond grade at depth. 80 t of material were collected but the analysis in South Africa was of poor quality and failed to recover any of nine control diamonds

More

The discovery of South Africa’s first four kimberlite pipes

2010-6-11  South Africa’s two other great kimberlite pipes were discovered some months later. The two pipes, which would become known as the De Beers and

More

Kimberlite Sills and Dykes Associated with the Wesselton ...

2020-3-25  SOUTH AFRICAN JOURNAL OF GEOLOGY 2 KIMBERLITIC SILLS, WESSELTON KIMBERLITE PIPE, SOUTH AFRICA Figure 1. Location of Wesselton Mine, other major kimberlite occurrences around Kimberley, the Wesselton sill complex, and the Benfontein sill. Note the northwest to southeast alignment of the five major diamondiferous kimberlite pipes.

More

SOUTH AFRICAN DIAMOND HANDBOOK AND

South Africa, kimberlite is the dominant primary host rock for diamond occurrences, as opposed to lamproite in Australia. Alluvial diamond deposits are usually located within river terrace gravels that have been transported from their location of origin, usually from kimberlite deposits.

More

KIMBERLITES NEAR SIKERETI, NORTH-EASTERN SOUTH

2016-6-16  kimberlite indicator minerals in those regions of South West Africa/Namibia which are covered by Kalahari de-posits, CDM Prospecting (Pty) Ltd during 1975 carried out regional mapping and soil sampling in the north-eastern portion of the Territory. In the course of this work a geological reconnaissance map of Area 1920, to

More

The megacryst suite from the Schuller kimberlite, South

2020-7-20  The Schuller kimberlite is situated in the Cullinan district of the Transvaal Province, South Africa, approximately 30 km east-northeast of Pretoria. The precise location of the mine is 25° 45' 37'' south and 28° 31' 50'' east, at an elevation of 1505 m above sea level.

More

Kimberlite Properties, Composition and Formation

Kimberlite is an igneous rock that major source of diamonds.Kimberlite is a variety of peridotite.It is rich in mica minerals content and often in form of crystals of phlogopite. Other containt abundant minerals are chrome-diopside, olivine, and chromium- and pyrope-rich garnet.Kimberlite is typically found in pipes – structures with vertical edges that are roughly circular in cross-section.

More

Palmietfontein kimberlite pipe, South Africa; a case ...

The Palmietfontein kimberlite pipe is located 150 km northwest of Johannesburg, South Africa. It was emplaced at the contact between mafic rocks of the Bushveld complex and syenites of the Pilanesberg complex, and coincides with the intersection of two major faults.

More

“Kimberlite” and the Source of the Diamond in South

THE origin of the volcanic pipes of South Africa and the genesis of the diamonds contained in their “blue-ground” filling are as productive of controversy as that other geological puzzle—the ...

More

Botswana Diamonds: South African kimberlite exploration ...

2017-7-21  Two 200 m deep, large diameter 13 inch boreholes were drilled on kimberlite AK 21 to test the diamond grade at depth. 80 t of material were collected but the analysis in South Africa was of poor quality and failed to recover any of nine control diamonds

More

The discovery of South Africa’s first four kimberlite pipes

2010-6-11  South Africa’s two other great kimberlite pipes were discovered some months later. The two pipes, which would become known as the De Beers and

More

South Africa – Botswana Diamonds

2021-4-23  The Marnitz kimberlite cluster is intruded into the Limpopo Mobile Belt which also hosts the nearby Venetia Mine as well as several other kimberlites in South Africa, Botswana and Zimbabwe. The Oaks, which was a 1 hectare kimberlite pipe, produced 1.4M carats at a grade of 53 cpht and diamond value of $156/ct at a BCOS of +1.2mm.

More

SOUTH AFRICAN DIAMOND HANDBOOK AND

South Africa, kimberlite is the dominant primary host rock for diamond occurrences, as opposed to lamproite in Australia. Alluvial diamond deposits are usually located within river terrace gravels that have been transported from their location of origin, usually from kimberlite deposits.

More

KIMBERLITES NEAR SIKERETI, NORTH-EASTERN SOUTH

2016-6-16  kimberlite indicator minerals in those regions of South West Africa/Namibia which are covered by Kalahari de-posits, CDM Prospecting (Pty) Ltd during 1975 carried out regional mapping and soil sampling in the north-eastern portion of the Territory. In the course of this work a geological reconnaissance map of Area 1920, to

More

Petrology and geochemistry of eclogite xenoliths from the ...

2007-3-21  The Rietfontein kimberlite and xenoliths. The Rietfontein kimberlite is located at 26.75°S, 20.04°E, approximately 2 km east of the South Africa–Namibia border in the Northern Cape province of South Africa (Fig. 1).This is ∼200 km west of the inferred margin of the Kaapvaal craton (Fig. 1) in an area where Kalahari sands and Karoo-age sedimentary rocks obscure the nature of crystalline ...

More

The megacryst suite from the Schuller kimberlite, South

2020-7-20  The Schuller kimberlite is situated in the Cullinan district of the Transvaal Province, South Africa, approximately 30 km east-northeast of Pretoria. The precise location of the mine is 25° 45' 37'' south and 28° 31' 50'' east, at an elevation of 1505 m above sea level.

More

The alleged kimberlite-carbonatite relationship: evidence ...

McMahon BM, Haggerty SE, Bence RJ (1979) Oxide mineral chemistry and oxygen fugacities of the Benfontein sills, South Africa (Extended abstract). Kimberlite Symposium II, Cambridge, England. Mitchell RH (1977) Geochemistry of magnesian ilmenits from kimberlites in South Africa and Lesotho. Lithos 10:29–37. Google Scholar

More