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Twangiza Mine
Twangiza Mine is an open pit gold mine in South Kivu province of the Democratic Republic of the Congo (DRC) which started operations in 2012. Production has been disrupted by attacks from rebel militias. Location Twangiza Mine is in Mwenga Territory, South Kivu. It is about south of Bukavu, east of the RN2 highway and north of the Itombwe Mountains. The mine is at the north end of the Twangiza-Namoya gold belt, also called the Maniema-South Kivu Gold Belt, which stretches from South Kivu into Maniema. The belt extends from Twangiza southwest to Namoya in Maniema. Geology The eastern section of the Twangiza property is part of the Itombwe synclinorium, a fold that stretches south from Twangiza. It contains weakly metamorphized Neoproterozoic sediments, mostly mudstone, trending north–south. Near the main and north sections porphyritic sills from thick have intruded into the Neoproterozoic sediments. They have been extensively altered by hydrothermal circulation, but ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Kivu
South Kivu (''Jimbo la Kivu Kusini'' in Swahili), (french: Sud-Kivu) is one of 26 provinces of the Democratic Republic of the Congo. Its capital is Bukavu. History South Kivu Province was created from Sud-Kivu District in 1989, when the existing Kivu Province was divided into three parts (South Kivu, North Kivu and Maniema). In June 2014, around 35 people were killed in an attack in the South Kivu village of Mutarule. The attack was apparently part of dispute over cattle. On 7 August 2015 the 2015 South Kivu earthquake, a magnitude 5.8 earthquake, struck north northeast of Kabare at a depth of . One policeman was killed. Approximate correspondence between historical and current province Geography South Kivu borders the provinces of North Kivu to the north, Maniema to the west, and Katanga to the south. To the east it borders the countries of Rwanda, Burundi, and Tanzania. Administrative organization Administratively, the province of Sud-Kivu is divided into the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Granitic
A granitoid is a generic term for a diverse category of coarse-grained igneous rocks that consist predominantly of quartz, plagioclase, and alkali feldspar. Granitoids range from plagioclase-rich tonalites to alkali-rich syenites and from quartz-poor monzonites to quartz-rich quartzolites. As only two of the three defining mineral groups (quartz, plagioclase, and alkali feldspar) need to be present for the rock to be called a granitoid, foid-bearing rocks, which predominantly contain feldspars but no quartz, are also granitoids. The terms ''granite'' and ''granitic rock'' are often used interchangeably for granitoids; however, granite is just one particular type of granitoid. Granitoids are diverse; no classification system for granitoids can give a complete and unique characterization of the origin, compositional evolution, and geodynamic environment for the genesis of a granitoid. Accordingly, multiple granitoid classification systems have been developed such as those based ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baiyin Nonferrous
Baiyin Nonferrous Group Co., Ltd. known also as BNMCAcronym of Baiyin Nonferrous Metal Corporation is a Chinese company based in Baiyin, Gansu Province, China. The company was the main copper supplier in China. Since 15 February 2017, Baiyin Nonferrous is a listed company in the Shanghai Stock Exchange. In 2017, the localized version of '' Fortune'' ranked Baiyin Nonferrous as the 116th of top 500 Chinese enterprises. History The predecessor of the company was established in 1954, as one of the industrial project of the First Five Year Plan. (in Chinese) It was the main copper supplier in China, however, the mining pit opened in 1956 was shut down in 1988. The city of Baiyin was declared by the government as “resource exhaustion”. As of 2016, the company rely on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laurent-Désiré Kabila
Laurent-Désiré Kabila () (27 November 1939 – 18 January 2001) or simply Laurent Kabila ( US: ), was a Congolese revolutionary and politician who was the third President of the Democratic Republic of the Congo from 1997 until his assassination in 2001. A longtime opponent of Mobutu Sese Seko, he led the Alliance of Democratic Forces for the Liberation of Congo (ADFLC), a Rwandan and Ugandan-sponsored rebel group that invaded Zaire and overthrew Mobutu during the First Congo War from 1996 to 1997. Having now become the new president of the country, whose name was changed back to the Democratic Republic of the Congo, Kabila found himself in a delicate position as a puppet of his foreign backers. The following year, he ordered the departure of all foreign troops from the country to prevent a potential coup, leading to the Second Congo War in which his former Rwandan and Ugandan allies began sponsoring several rebel groups to overthrow him including the Rally for Congolese Dem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Société Minière Et Industrielle Du Kivu
The Société Minière et Industrielle du Kivu (Sominki) was a privately held mining company of Zaire. It operated gold and tin mines, mostly in South Kivu province, between 1974 and 1997. The acquisition of its mining assets by Banro Corporation of Canada was complicated by the First Congo War in 1996–1997, followed by expropriation of the mines by the new Democratic Republic of the Congo (DRC) government. Eventually Banro gained the right to exploit the gold mines. Foundation In 1973 Cobelmin Zaire, a subsidiary of the ''Compagnie Belge d'Entreprises Minières'', was owner of five small mining companies: Minière des Grands Lacs (MGL), Kinoretain, Kundamines, Minerga and Miluba. Cobelmin and MGL were both located at Kamituga in Kivu Province, which had a large gold mine and was in the center of the tin-bearing cassiterite region. Kivumines, Phibraki, Somikubi and Symetain were also active in the region in 1973. Philips Brothers Sobaki owned 75% and 50% respectively of Kiv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adit
An adit (from Latin ''aditus'', entrance) is an entrance to an underground mine which is horizontal or nearly horizontal, by which the mine can be entered, drained of water, ventilated, and minerals extracted at the lowest convenient level. Adits are also used to explore for mineral veins. Construction Adits are driven into the side of a hill or mountain, and are often used when an ore body is located inside the mountain but above the adjacent valley floor or coastal plain. In cases where the mineral vein outcrops at the surface, the adit may follow the lode or vein until it is worked out, in which case the adit is rarely straight. The use of adits for the extraction of ore is generally called drift mining. Adits can only be driven into a mine where the local topography permits. There will be no opportunity to drive an adit to a mine situated on a large flat plain, for instance. Also if the ground is weak, the cost of shoring up a long adit may outweigh its possible advantage ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minière Des Grands Lacs
The Minière is a short mountain river that flows through the Alpes-Maritimes department of southeastern France. It is long. It flows into the Bieugne (a tributary of the Roya) west of Tende Tende (; Italian, Occitan and Royasc: ''Tenda'') is a commune in the Alpes-Maritimes department in southeastern France. Geography Tende is located within Mercantour National Park in the French Alps. The mountainous commune is bordered ..., where a dam forms the Lac des Mesches. References Rivers of France Rivers of Alpes-Maritimes Rivers of Provence-Alpes-Côte d'Azur {{France-river-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ulindi River
The Ulindi River is a tributary of the Lualaba River in the Democratic Republic of the Congo (DRC). There is a proposal to build a hydroelectric power plant on the river to power a gold mining project. Location The river rises in the east of South Kivu and flows in a northwesterly direction through Maniema, joining the Lualaba downstream from Kindu. The upper Ulindi valley has a richly diverse fauna, including many monkey species, chimpanzees, leopards, buffaloes, elephants and antelopes. The valley has traditionally been occupied by the Lega people, speakers of Kilega, a Bantu language. It is administratively divided into the Mwenga, Shabunda and Pangi territories. History In 1874 the Ulindi river was visited by the explorer Verney Lovett Cameron, the second European to cross Africa. During the Congo Free State period, the region was under the control of Arabs from the east coast of Africa. Some of these such as Munie Chabodu and Munie Mtoro were agents of the Free State. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alluvial Gold
Alluvium (from Latin ''alluvius'', from ''alluere'' 'to wash against') is loose clay, silt, sand, or gravel that has been deposited by running water in a stream bed, on a floodplain, in an alluvial fan or beach, or in similar settings. Alluvium is also sometimes called alluvial deposit. Alluvium is typically geologically young and is not consolidated into solid rock. Sediments deposited underwater, in seas, estuaries, lakes, or ponds, are not described as alluvium. Floodplain alluvium can be highly fertile, and supported some of the earliest human civilizations. Definitions The present consensus is that "alluvium" refers to loose sediments of all types deposited by running water in floodplains or in alluvial fans or related landforms. However, the meaning of the term has varied considerably since it was first defined in the French dictionary of Antoine Furetière, posthumously published in 1690. Drawing upon concepts from Roman law, Furetière defined ''alluvion'' (the Fren ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arsenopyrite
Arsenopyrite (International Mineralogical Association, IMA List of mineral symbols, symbol: Apy) is an iron arsenic sulfide (FeAsS). It is a hard (Mohs scale of mineral hardness, Mohs 5.5-6) metallic, opaque, steel grey to silver white mineral with a relatively high specific gravity of 6.1. When dissolved in nitric acid, it releases elemental sulfur. When arsenopyrite is heated, it produces sulfur and arsenic vapor. With 46% arsenic content, arsenopyrite, along with orpiment, is a principal ore of arsenic. When deposits of arsenopyrite become exposed to the atmosphere, the mineral slowly converts into iron arsenates. Arsenopyrite is generally an acid-consuming sulfide mineral, unlike pyrite, iron pyrite which can lead to acid mine drainage. The crystal habit, hardness, density, and garlic odour when struck are diagnostic. Arsenopyrite in older literature may be referred to as ''mispickel'', a name of German origin. Arsenopyrite also can be associated with significant amount ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pyrite
The mineral pyrite (), or iron pyrite, also known as fool's gold, is an iron sulfide with the chemical formula Fe S2 (iron (II) disulfide). Pyrite is the most abundant sulfide mineral. Pyrite's metallic luster and pale brass-yellow hue give it a superficial resemblance to gold, hence the well-known nickname of ''fool's gold''. The color has also led to the nicknames ''brass'', ''brazzle'', and ''Brazil'', primarily used to refer to pyrite found in coal. The name ''pyrite'' is derived from the Greek (), 'stone or mineral which strikes fire', in turn from (), 'fire'. In ancient Roman times, this name was applied to several types of stone that would create sparks when struck against steel; Pliny the Elder described one of them as being brassy, almost certainly a reference to what we now call pyrite. By Georgius Agricola's time, , the term had become a generic term for all of the sulfide minerals. Pyrite is usually found associated with other sulfides or oxides in quartz ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sulfide
Sulfide (British English also sulphide) is an inorganic anion of sulfur with the chemical formula S2− or a compound containing one or more S2− ions. Solutions of sulfide salts are corrosive. ''Sulfide'' also refers to chemical compounds large families of inorganic and organic compounds, e.g. lead sulfide and dimethyl sulfide. Hydrogen sulfide (H2S) and bisulfide (SH−) are the conjugate acids of sulfide. Chemical properties The sulfide ion, S2−, does not exist in aqueous alkaline solutions of Na2S. Instead sulfide converts to hydrosulfide: :S2− + H2O → SH− + OH− Upon treatment with an acid, sulfide salts convert to hydrogen sulfide: :S2− + H+ → SH− :SH− + H+ → H2S Oxidation of sulfide is a complicated process. Depending on the conditions, the oxidation can produce elemental sulfur, polysulfides, polythionates, sulfite, or sulfate. Metal sulfides react with halogens, forming sulfur and metal salts. :8 MgS + 8 I2 → S8 + ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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