Wolframite is an iron, manganese, and tungstate mineral with a chemical formula of (Fe,Mn)WO4 that is the intermediate mineral between ferberite (Fe2+ rich) and hübnerite (Mn2+ rich). Along with scheelite, the wolframite series are the most important tungsten ore minerals. Wolframite is found in quartz veins and pegmatites associated with granitic intrusives. Associated minerals include cassiterite, scheelite, bismuth, quartz, pyrite, galena, sphalerite, and arsenopyrite.
Eldorado Gold Corporation is a Canadian company that owns and operates gold mines in Turkey, Greece and Canada. Since its merger with European Goldfields in 2011 the company has been pursuing the development of the Skouries mine, Olympias mine and Stratoni mine in Greece. The company previously developed and operated gold mines in China, Brazil and Mexico. Headquartered in Vancouver and listed on the Toronto and New York Stock Exchanges, Eldorado Gold has developed and operated assets from several merged companies HRC Developments Corporation, Afcan Mining Corporation, Sino Gold Mining, Brazauro Resources, Integra Gold, as well as European Goldfields.
Greisen is a highly altered granitic rock or pegmatite, usually composed predominantly of quartz and micas. Greisen is formed by self-generated alteration of a granite and is a class of moderate- to high-temperature magmatic-hydrothermal alteration related to the late-stage release of volatiles dissolved in a magma during the solidification of that magma.
Minas da Panasqueira or Mina da Panasqueira is the generic name for a set of mining operations between Cabeço do Pião and the village of Panasqueira, which operated in a technically integrated manner and continue practically since its discovery. Subsequently, it was agglomerated into a single administrative entity called Couto Mineiro da Panasqueira which had its last demarcation on 9 March 1971 and later in the present Exploration Concession C18 (16/12/1992). The mining installations are currently centralised in the area of Barroca Grande-Aldeia de S. Francisco de Assis (Covilhã) i.e. access to underground exploration, extraction and processing of ore.
South Crofty is a metalliferous tin and copper mine located in the village of Pool, Cornwall, United Kingdom. An ancient mine, it has seen production for over 400 years, and extends almost two and a half miles across and 3,000 feet (910 m) down and has mined over 40 lodes. Evidence of mining activity in South Crofty has been dated back to 1592, with full-scale mining beginning in the mid-17th century. The mine went into serious decline after 1985 and eventually closed in 1998. After several changes of ownership, South Crofty is owned by Cornish Metals Inc, which is working to re-open the mine, as of November 2022, having receive a permit for dewatering the mine.
The mining industry of Botswana has dominated the national economy of Botswana since the 1970s. Diamond has been the leading component of the mineral sector since large-scale diamond production began in 1972 by Debswana. Most of Botswana's diamond production is of gem quality, resulting in the country's position as the world's leading producer of diamond by value. Copper, gold, nickel, coal and soda ash production also has held significant, though smaller, roles in the economy.
Lundin Mining Corporation is a Canadian company that owns and operates mines in Sweden, United States, Chile, Portugal and Brazil that produce base metals such as copper, zinc, and nickel. Headquartered in Toronto, the company was founded by Adolf Lundin and operated by Lukas Lundin. While it was incorporated to pursue an interest in a diamond mine in Brazil, the company re-structured and raised funds to develop the Storliden mine in Sweden. It purchased the Swedish Zinkgruvan Mine from Rio Tinto and then merged with Arcon International Resources for its Galmoy Mine in Ireland and Eurozinc for its Neves-Corvo mine in Portugal. The company subsequently purchased and operated the Eagle mine, Candelaria mine, and Chapada mine.
Drakelands Mine, also known as Hemerdon Mine or Hemerdon Ball Mine, is a tungsten and tin mine. It is located 11 km northeast of Plymouth, near Plympton, in Devon, England. It lies to the north of the villages of Sparkwell and Hemerdon, and adjacent to the large china clay pits near Lee Moor. The mine had been out of operation since 1944, except for the brief operation of a trial mine in the 1980s. Work started to re-open it in 2014, but it ceased activities in 2018. It hosts the fourth largest tin-tungsten deposit in the world.
The following outline is provided as an overview of and topical guide to mining:
SAG/SDAG Wismut was a uranium mining company in East Germany during the time of the Cold War. It produced a total of 230,400 tonnes of uranium between 1947 and 1990 and made East Germany the fourth largest producer of uranium ore in the world at the time. It was the largest single producer of uranium ore in the entire sphere of control of the USSR. In 1991 after German reunification it was transformed into the Wismut GmbH company, owned by the Federal Republic of Germany, which is now responsible for the restoration and environmental cleanup of the former mining and milling areas. The head office of SDAG Wismut / Wismut GmbH is in Chemnitz-Siegmar.
Bisie, divided into Mpama North and Mpama South deposits, is a tin deposit in the Walikale territory of the province of North Kivu in the Democratic Republic of the Congo (DRC). The mine was formerly an illegal source of an estimated 15,000 tons of tin, or 4% of global production. In early 2018 artisanal mining activity has stopped, and Alphamin Resources Corp., an exploration company, based in Mauritius, is leading an exploration of the site.
Adex Mining Inc. is a Toronto, Ontario, Canada-based mining exploration company engaged in the development of its wholly owned Mount Pleasant Mine property in Charlotte County, New Brunswick, Canada. According to the Government of Canada report, Mount Pleasant is "North America's largest tin deposit and the world's largest reserve of indium." The company's stock trades on the TSX Venture Exchange under the symbol ADE.
Mining in Bolivia has been a dominant feature of the Bolivian economy as well as Bolivian politics since 1557. Colonial era silver mining in Bolivia, particularly in Potosí, played a critical role in the Spanish Empire and the global economy. Tin mining supplanted silver by the twentieth century and the central element of Bolivian mining, and wealthy tin barons played an important role in national politics until they were marginalized by the industry's nationalization into the Bolivian Mining Corporation that followed the 1952 revolution. Bolivian miners played a critical part to the country's organized labor movement from the 1940s to the 1980s.
Mauritania's mineral sector was dominated by iron ore mining and beneficiation. Other mineral commodities produced in the country included cement, copper, gold, gypsum, petroleum, salt, and steel. The Ministère des Mines et de l’Industrie was the Government agency responsible for enacting the Mining Code and for the coordination of all activities in the mining sector. The Direction des Mines et de la Géologie was the entity responsible for promoting the mineral sector and for providing geologic and mining information to potential investors; the Direction des Hydrocarbures was in charge of the development of the petroleum sector; and the Office Mauritanien des Recherches Géologiques was the Government entity responsible for evaluating areas of mineral potential for exploration. Société Nationale Industrielle et Minière (SNIM) was responsible for iron ore production and benefciation.
The El Indio Gold Belt is a mineral-rich region spanning the border between Chile and Argentina that contains large quantities of gold, silver and copper. On both sides of the border the belt is located within the Andes. The El Indio mine within the district was the first modern mine in Chile to produce gold as its main product. In Chile the main precious metal containing mineral is enargite. The El Indio belt is bordered in the north by another gold-silver mining district known as the Frontera District. Rodalquilarite, alunite and poughite are some of the minerals present in the area. The deposits of the belt formed during the Late Miocene period.
The mining landscape in Zambia covers production of multiple mineral raw materials, including copper, cobalt, gold, nickel, manganese, emeralds, beryllium, myriad gemstones, sulfur, zinc, coal, iron ore, steel, limestone, uranium and other platinum-group metals. Mining has long been a significant primary sector industry and contributor to the Zambian economy by providing export income, royalty payments and employment.
Mining in Portugal is regulated by the Portuguese Ministry of Economy and the Geology and Energy Resources authority under the state-run research institute INETI. Mining activities have continued since the pre-Roman era, when most of the region was known as Lusitania. Gold was once mined. The country remains among the largest European producers of copper and minerals.
Wolf Minerals Limited was an ASX (WLF) and AIM (WLFE) listed specialty metals company focused on developing the Drakelands Mine tungsten and tin project, in Devon in the UK.
The Sangdong mine located in South Korea is one of the largest tungsten mines in the world. The mine is located 187 km southeast of Seoul, approximately three hours’ drive via expressways and local sealed high ways. Temperatures rise to a maximum of about 30°C during the wet summer months of June to August. The winter period is relatively dry and extends from October to March, with freezing temperatures occurring during the period December to March.
Los Santos Mine is a tungsten open pit mine in the province of Salamanca (Spain). The only tungsten producing mine in Spain, it has been in continuous production since its commissioning in 2008.
