Kimberlite, an igneous rock and a rare variant of peridotite, is most commonly known to be the main host matrix for diamonds. It is named after the town of Kimberley in South Africa, where the discovery of an 83.5-carat diamond called the Star of South Africa in 1869 spawned a diamond rush and led to the excavation of the open-pit mine called the Big Hole. Previously, the term kimberlite has been applied to olivine lamproites as Kimberlite II, however this has been in error.
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.
The Ekati Diamond Mine, often simply called Ekati, is Canada's first surface and underground diamond mine and is owned by Burgundy Diamond Mines. It is located 310 km (190 mi) north-east of Yellowknife, Northwest Territories, and about 200 km (120 mi) south of the Arctic Circle, near Lac de Gras. Until 2014, Ekati was a joint venture between Dominion Diamond Mines (80%), Chuck Fipke, and Stewart Blusson, the two geologists who discovered kimberlite pipes north of Lac de Gras. Fipke and Blusson each held 10% stake in the mine, until Fipke sold his share to Dominion. In 2021, Arctic Canadian Diamond Company Ltd. acquired the Ekati Diamond Mine with associated assets and liabilities from Dominion Diamond Mines. In July 2023, Burgundy Diamond Mines purchased full control of Arctic Canadian Diamond Company.
The Diavik Diamond Mine is a diamond mine in the North Slave Region of the Northwest Territories, Canada, about 300 km (190 mi) northeast of Yellowknife.
The Orapa diamond mine is the world's largest diamond mine by area. The mine is located in Orapa, a town in the Central District of Botswana about 240 km (150 mi) west of the city of Francistown. Orapa is owned by Debswana, a partnership between the De Beers company and the government of Botswana. The mine was discovered on 1 March 1967, a year after Botswana's independence, by a team of De Beers geologists, including Manfred Marx, Jim Gibson and led by Dr. Gavin Lamont. It is the oldest of four mines operated by the company, and began operations in July 1971 and its first production was 1,438,168 carats (287,633.6 g). The revenue the mine generated is credited for transforming the Botswana economy, as it allowed the government to invest in critical social services and national infrastructure.
The Jwaneng diamond mine is the richest diamond mine in the world, and also the second largest in the world. It is nicknamed "the Prince of Mines", and is located in south-central Botswana about 170 kilometers (110 mi) southwest of the city of Gaborone.
The Catoca diamond mine is the fourth largest diamond mine in the world, and is located in Angola. The mine is located on a kimberlite pipe. The mine is owned by a joint venture between the Angolan state-owned company Endiama, and the Russian company Alrosa.
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 kimberlite pipe was found in March 1940 and the mine established by 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 Mir mine, also called the Mirny mine, is an open pit diamond mine located in Mirny, Sakha Republic, in the Siberian region of eastern Russia. The mine is more than 525 meters deep, has a diameter of 1,200 m, and is one of the largest excavated holes in the world.
The Jericho Diamond Mine is a dormant diamond mine located in Canada's Nunavut territory. Jericho is Nunavut’s first and only diamond mine. It is located 420 km (260 mi) northeast of Yellowknife, Northwest Territories and is accessible by air all year and by winter road from Yellowknife. The project was mined from 2006 to 2008, and produced 780,000 carats of diamonds from 1,200,000 tonnes of kimberlite mined from the open pit operation. Over $200 million was invested in the development of the Jericho operations including the construction of a 2,000 t per day diamond recovery plant, maintenance facility, fuel farm, and offices and accommodation for 225 personnel.
Canadian diamonds are diamonds which have been mined in any one of the provinces and territories of Canada. Diamond-rich areas were not commercially extracted in Canada until the early 1990s. For the first 60 years of the 20th century, diamonds originated from kimberlite pipes and alluvial deposits in places such as Africa and some from South America. Later, diamond discoveries were made in the Soviet Union. Since the 1990s, major diamond discoveries were made and mining operations began.
The Gahcho Kué Diamond Mine is located on the Canadian tundra in the Northwest Territories. It is situated at Kennady Lake, in the Akaitcho Treaty 8 Territory claim block, which is 85 km (53 mi) southeast of the Snap Lake Diamond Mine and approximately 280 km (170 mi) east northeast of Yellowknife. The site is served by Gahcho Kue Aerodrome, which has both an ice runway in winter and a year-round gravel runway, and a spur of the Tibbitt to Contwoyto Winter Road from Lupin Mine. the main camp is at 63°26′05″N109°12′02″W, north of the ice strip, with a smaller site at 63°25′48″N109°12′00″W, south of the runway.
Societé minière de Bakwanga is a diamond mining company based in the Democratic Republic of the Congo. Historically, the company was the largest diamond producer in the world by volume. However, following decades of decline, the company currently produces only a small minority of the DRC's diamonds.
Petra Diamonds Ltd is a diamond mining group headquartered in Jersey. Petra own one of the world's most productive mines historically, the Cullinan Diamond Mine is famed for having produced the world's largest rough and polished diamond. The company is listed on the London Stock Exchange.
Mining in the United Kingdom produces a wide variety of fossil fuels, metals, and industrial minerals due to its complex geology. In 2013, there were over 2,000 active mines, quarries, and offshore drilling sites on the continental land mass of the United Kingdom producing £34bn of minerals and employing 36,000 people.
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.
The Victor Mine was the first Canadian diamond mine located in Ontario, and De Beers' second diamond mine in Canada. It is located in the Northern Ontario Ring of Fire, in the James Bay Lowlands 90 kilometres (56 mi) west of Attawapiskat in the remote northern part of the province. In June 2005, the Attawapiskat First Nation voted in favour (85.5%) of ratifying the Impact Benefit Agreement (IBA). Construction of the mine began in February 2006 which created 3200 positions; mining and operations will create around 400 permanent positions. The Victor Mine is an open-pit mine, with a processing plant, workshops, and an airstrip located on site. By 2013–2014 royalties collected from De Beers Victor Mine amounted to $226. At that time De Beers was continuing to pay off its "$1 billion investment to build the mine and from now until it closes, the company expects to pay tens of millions of dollars in royalties." The mine completed mining and processing in 2019 and has moved to a shut-down phase including demolition of infrastructure and rehabilitation of the site.
Koidu Limited a subsidiary of OCTÉA Limited, is a locally registered Company in the Republic of Sierra Leone.
The mining industry of Lesotho is mostly concentrated on diamond mining and as such the mining sector in the country has not played any significant role in furthering its economy. Apart from diamonds, the country's main mineral resources have been identified as base metals, clays, dimension stone, sand, gravel and uranium. The lack of initiative to extract other minerals commercially is mainly attributed to the inadequacy of infrastructure and finances. Between 2000 and 2011, the percentage of GDP contributed by diamond mining to Lesotho's economy rose from "virtually zero" to about 4%.
The geology of Liberia is largely extremely ancient rock formed between 3.5 billion and 539 million years ago in the Archean and the Neoproterozoic, with some rocks from the past 145 million years near the coast. The country has rich iron resources as well as some diamonds, gold and other minerals in ancient sediment formations weathered to higher concentrations by tropical rainfall.
Zimbabwe