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De Beers Group is an international corporation that specializes in diamond mining, diamond exploitation, diamond retail, diamond trading and industrial diamond manufacturing sectors. The company is active in open-pit, large-scale alluvial and coastal mining. It operates in 35 countries and mining takes place in Botswana, Namibia, South Africa, Canada and Australia.
The Argyle Diamond Mine was a diamond mine located in the East Kimberley region in the remote north of Western Australia. Argyle was at times the largest diamond producer in the world by volume, although the proportion of gem-quality diamonds was low. It was the only known significant source of pink and red diamonds, and additionally provided a large proportion of other naturally coloured diamonds, including champagne, cognac and rare blue diamonds.
Jagersfontein is a small town in the Free State province of South Africa. The original farm on which the town stands was once the property of a Griqua Jacobus Jagers, hence the name Jagersfontein. He sold the farm to C.F. Visser in 1854. A diamond rush started in 1870 after farmer J.J. de Klerk found a 50 carat diamond. This was about three years before diamonds were discovered 130 km away at Kimberley.
Debswana Diamond Company Limited, or simply Debswana, is a mining company located in Botswana, and is the world's leading producer of diamonds by value. Debswana operates four diamond mines in the eastern and central parts of Botswana, as well as a coal mine. Debswana is a joint venture between the government of Botswana and the South African diamond company De Beers; each party owns 50 percent of the company.
The Williamson Diamond Mine is a diamond mine 23 kilometres (14 mi) northeast of Shinyanga in Tanzania; it became well known as the first significant diamond mine outside of South Africa. The mine was established in 1940 by Dr. John Williamson, a Canadian geologist, and has been continuous operation since then, making it one of the oldest continuously operating diamond mines in the world. Over its lifetime it has produced over 19 million carats (3,800 kg) of diamonds. A 2020 report by The Guardian said that high-quality pink diamonds from the mine could value up to $700,000 a carat.
The Excelsior Diamond is a gem-quality diamond, and was the largest known diamond in the world from the time of its discovery in 1893 until 1905, when the larger Cullinan Diamond was found. It was found on June 30, 1893 at the Jagersfontein Mine in South Africa, 130 kilometres south east of Kimberley whose fame as a diamond mining center always overshadowed that of Jagersfontein. It had a blue-white tint and weighed 971 old carats or 995.2 metric carats. The Excelsior rates as the fourth largest rough diamond of gem quality ever found. It was ultimately cut into ten stones weighing from 13 to 68 carats..
Alrosa is a Russian group of diamond mining companies that specialize in exploration, mining, manufacture, and sale of diamonds. The company leads the world in diamond mining by volume. Mining takes place in Western Yakutia, the Arkhangelsk region, and Africa. Alrosa is Russia's leading diamond mining and distribution company, accounting for 95% of Russian diamond production and 27% of global diamond extraction.
Koffiefontein Mine is a diamond mine situated in the Free State province, about 80 km from Kimberley, South Africa. It is one of the many Kimberley mines of which Kimberley mine, de Beers mine, Dutoitspan, Bultfontein and Wesselton are its more famous neighbours.
Jagersfontein Mine is an abandoned open-pit mine in South Africa, located close to the town of Jagersfontein and about 110 kilometres south-west of Bloemfontein. Since it was first established in 1870, two of the ten biggest diamonds ever discovered, the Excelsior and the Reitz, were mined from Jagersfontein. The term "Jagers" has since been coined to denote the distinctive faint bluish tint of the gems from this mine. Among geologists, Jagersfontein is known as a kimberlite pipe, and a prime locality for mantle xenoliths, some of which are believed to have come from depths of 300–500 km (190–310 mi).
Lerala is a village in Central District of Botswana. The village is located at the south-eastern end of the Tswapong Hills, 30 km (19 mi) from the Limpopo River and the border with South Africa and approximately 90 km (56 mi) east of Palapye. The population of Lerala was 6,871 in the 2011 census, which was a 20.5% increase from the 2001 population.
The Mining industry of Ghana accounts for 5% of the country's GDP and minerals make up 37% of total exports, of which gold contributes over 90% of the total mineral exports. Thus, the main focus of Ghana's mining and minerals development industry remains focused on gold. Ghana is Africa's largest gold producer, producing 80.5 t in 2008. Ghana is also a major producer of bauxite, manganese and diamonds. Ghana has 20 large-scale mining companies producing gold, diamonds, bauxite and manganese, and, there are also over 300 registered small scale mining groups and 90 mine support service companies.
Mining in Angola is an activity with great economic potential since the country has one of the largest and most diversified mining resources of Africa. Angola is the third largest producer of diamonds in Africa and has only explored 40% of the diamond-rich territory within the country, but has had difficulty in attracting foreign investment because of corruption, human rights violations, and diamond smuggling. Production rose by 30% in 2006 and Endiama, the national diamond company of Angola, expects production to increase by 8% in 2007 to 10,000,000 carats (2,000 kg) annually. The government is trying to attract foreign companies to the provinces of Bié, Malanje and Uíge. Angola has also historically been a major producer of iron ore.
The Marange diamond fields are an area of widespread small-scale diamond production in Chiadzwa, Mutare District, Zimbabwe. 'Although estimates of the reserves contained in this area vary wildly, some have suggested that it could be home to one of the world's richest diamond deposits'. The hugely prolific fields are regarded by some experts as the world's biggest diamond find in more than a century. Production from Marange is controversial due to ongoing legal wrangles and government crackdowns on illegal miners and allegations of forced labour. In terms of carats produced, the Marange field is the largest diamond-producing project in the world, estimated to have produced 16.9 million carats in 2013, or 13% of global rough diamond supply. Marange is estimated to have produced 12 million carats in 2012, 8.7 million carats in 2011, and 8.2 million carats in 2010. While some diamond mines produce rough valued at over $1000 per carat, average production at Marange is estimated at under $50 per carat.
The Birim River is one of the main tributaries of the Pra River in Ghana and the country's most important diamond-producing area, flowing through most of the width of the Eastern region. The river rises in the east of the Atewa Range, flows north through the gap between this range and the Kwahu Plateau, then runs roughly south-west until it joins the Pra. It gives its name to the Birimian rock formation, which yields most of the gold in the region. Ghana is the second largest producer of gold in Africa.
Kelsey Lake Diamond Mine is a defunct diamond mine in Colorado, USA. It is located in the State Line Kimberlite District, near the Wyoming border, and consists of nine kimberlite volcanic pipes, of which two were open pit mined.
Lucara Diamond Corp. is a diamond exploration and mining company, founded in 2009 by two Canadian mining executives, Eira Thomas, Catherine McLeod-Seltzer and Swedish-Canadian mining billionaire Lukas Lundin, operating in Southern Africa but established in Canada. In November 2015, Lesedi La Rona, the world's second largest gem-quality diamond ever found, was found at the Karowe mine in Botswana.
The mining industry of Sierra Leone accounted for 4.5 percent of the country's GDP in 2007 and minerals made up 79 percent of total export revenue with diamonds accounting for 46 percent of export revenue in 2008. The main minerals mined in Sierra Leone are diamonds, rutile, bauxite, gold, iron and limonite.
Schmidtsdrift is a town in Pixley ka Seme District Municipality in the Northern Cape province of South Africa. Situated 80 km west of Kimberley, it was originally a ford across the Vaal River which is now bridged on the N8 National Route from Kimberley to Campbell and Griquatown.
The mining industry of Liberia has witnessed a revival after the civil war which ended in 2003. Gold, diamonds, and iron ore form the core minerals of the mining sector with a new Mineral Development Policy and Mining Code being put in place to attract foreign investments. In 2013, the mineral sector accounted for 11% of GDP in the country and the World Bank projected a further increase in the sector by 2017.
Anglovaal Group was one of six large South African holding conglomerates that had interests in mining, finance and industry. It was formed in 1933 as the Anglo-Transvaal Consolidated Investment Company Limited with interests initially in mining. In 1981, it became Anglovaal Limited. It was majority owned throughout its existence by the Hersov and Menell families. In the late 1990s, it would form into two separate companies, Anglovaal Industrial Holdings (AVI) and Anglovaal Minerals (Avmin). As a family owned business, all family interests were to be diluted by 2001. By 2003, Anglovaal Minerals became part of African Rainbow Minerals Limited, a listed black empowerment company.
References
- ↑ Rockwell faces new Pala attack Brendan Ryan | Thu, 30 Apr 2009 14:30
- ↑ Pala Sets the Record Straight on Rockwell in the Face of Minority Directors' Flip-Flops [ dead link ]
- ↑ Pala cuts Rockwell holding, board rep quits, Liezel Hill, 23 June 2009 http://www.miningweekly.com/article/pala-cuts-rockwell-holding-board-rep-quits-2009-06-23
- ↑ Hunt for new diamond capacity likely to lead to further consolidation in industry , By Paulina Lichwa . Published: 10 May 2010 13:02 .
- ↑ Rockwell offloads Klipdam to private buyer for R23m, South Africa: Mining Weekly, 2013
- ↑ "Rockwell sells non-core assets | IOL Business Report" . Retrieved 10 February 2018.
- ↑ "Liquidators appointed for troubled Rockwell Diamonds mines | IOL Business Report" . Retrieved 10 February 2018.
- ↑ "Rockwell Diamonds keeps sale talks alive" . Retrieved 10 February 2018.
- ↑ Rockwell recovers 66 carat stone from Holpan, 124 and 145 carat stones from Saxendrift and presents year to date diamond sales information