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Mining In Ivory Coast
Although the subsoil of Ivory Coast contained many other minerals, none existed in commercially exploitable amounts, given the high costs of extraction. The mining sector contributes to 13% of exports (in 2022).>https://oec.world/en/profile/country/civ''Cote d'Ivoire country study'' Library of Congress Federal Research Division (November 1988). ''This article incorporates text from this source, which is in the public domain''. During the precolonial era, gold was extracted from small shafts dug into the earth or from river and streambeds and was traded at the coast or across the Sahara Desert. Efforts under the colonial administration to exploit gold deposits at Kokoumbo in the center of the country and at small mines in the southeast proved unprofitable. In 1984 the state-owned SODEMI and a French mining company formed the Ity Mining Company (Société Minières d'Ity—SMI) to exploit a deposit discovered thirty years earlier at Ity near Danané. Total investment in this period ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ivorian Women In Mining IndustryːThe Senior First Metallurgist Woman In Ivory Coast
Ivorian may refer to: Country * Something of, from, or related to the country of Ivory Coast * A person from Ivory Coast, or of Ivorian descent (for information about the Ivorian people, see Demographics of Ivory Coast and Culture of Ivory Coast) ** Specified Persons List of Ivorians * Note that there is no language called "Ivorian" (for languages spoken in Ivory Coast, see Languages of Ivory Coast) Other *Ivorian stage, in British stratigraphy a stage in the lower Carboniferous {{disambiguation Language and nationality disambiguation pages Demonyms ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Liberia
Liberia (), officially the Republic of Liberia, is a country on the West African coast. It is bordered by Sierra Leone to Liberia–Sierra Leone border, its northwest, Guinea to its north, Ivory Coast to its east, and the Atlantic Ocean to its south and southwest. It has a population of around 5 million and covers an area of . English is the official language, but over 20 indigenous languages are spoken, reflecting the country's ethnic and cultural diversity. The country's capital and largest city is Monrovia. Liberia began in the early 19th century as a project of the American Colonization Society (ACS), which believed black people would face better chances for freedom and prosperity in Africa than in the United States. Between 1822 and the outbreak of the American Civil War in 1861, more than 15,000 freed and free-born black people who faced social and legal oppression in the U.S., along with 3,198 Afro-Caribbeans, relocated to Liberia. Gradually developing an Americo- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mining In Ivory Coast
Although the subsoil of Ivory Coast contained many other minerals, none existed in commercially exploitable amounts, given the high costs of extraction. The mining sector contributes to 13% of exports (in 2022).>https://oec.world/en/profile/country/civ''Cote d'Ivoire country study'' Library of Congress Federal Research Division (November 1988). ''This article incorporates text from this source, which is in the public domain''. During the precolonial era, gold was extracted from small shafts dug into the earth or from river and streambeds and was traded at the coast or across the Sahara Desert. Efforts under the colonial administration to exploit gold deposits at Kokoumbo in the center of the country and at small mines in the southeast proved unprofitable. In 1984 the state-owned SODEMI and a French mining company formed the Ity Mining Company (Société Minières d'Ity—SMI) to exploit a deposit discovered thirty years earlier at Ity near Danané. Total investment in this period ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bauxite
Bauxite is a sedimentary rock with a relatively high aluminium content. It is the world's main source of aluminium and gallium. Bauxite consists mostly of the aluminium minerals gibbsite (Al(OH)3), boehmite (γ-AlO(OH)) and diaspore (α-AlO(OH)), mixed with the two iron oxides goethite (FeO(OH)) and haematite (Fe2O3), the aluminium clay mineral kaolinite (Al2Si2O5(OH)4) and small amounts of anatase (TiO2) and ilmenite (FeTiO3 or FeO.TiO2). Bauxite appears dull in luster and is reddish-brown, white, or tan. In 1821, the French geologist Pierre Berthier discovered bauxite near the village of Les Baux in Provence, southern France. Formation Numerous classification schemes have been proposed for bauxite but, , there was no consensus. Vadász (1951) distinguished lateritic bauxites (silicate bauxites) from karst bauxite ores (carbonate bauxites): * The carbonate bauxites occur predominantly in Europe, Guyana, Suriname, and Jamaica above carbonate rocks (limestone and do ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nickel
Nickel is a chemical element with symbol Ni and atomic number 28. It is a silvery-white lustrous metal with a slight golden tinge. Nickel is a hard and ductile transition metal. Pure nickel is chemically reactive but large pieces are slow to react with air under standard conditions because a passivation layer of nickel oxide forms on the surface that prevents further corrosion. Even so, pure native nickel is found in Earth's crust only in tiny amounts, usually in ultramafic rocks, and in the interiors of larger nickel–iron meteorites that were not exposed to oxygen when outside Earth's atmosphere. Meteoric nickel is found in combination with iron, a reflection of the origin of those elements as major end products of supernova nucleosynthesis. An iron–nickel mixture is thought to compose Earth's outer and inner cores. Use of nickel (as natural meteoric nickel–iron alloy) has been traced as far back as 3500 BCE. Nickel was first isolated and classified as an e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Copper
Copper is a chemical element with the symbol Cu (from la, cuprum) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkish-orange color. Copper is used as a conductor of heat and electricity, as a building material, and as a constituent of various metal alloys, such as sterling silver used in jewelry, cupronickel used to make marine hardware and coins, and constantan used in strain gauges and thermocouples for temperature measurement. Copper is one of the few metals that can occur in nature in a directly usable metallic form ( native metals). This led to very early human use in several regions, from circa 8000 BC. Thousands of years later, it was the first metal to be smelted from sulfide ores, circa 5000 BC; the first metal to be cast into a shape in a mold, c. 4000 BC; and the first metal to be purposely alloyed with another metal, tin, to create ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cobalt
Cobalt is a chemical element with the symbol Co and atomic number 27. As with nickel, cobalt is found in the Earth's crust only in a chemically combined form, save for small deposits found in alloys of natural meteoric iron. The free element, produced by reductive smelting, is a hard, lustrous, silver-gray metal. Cobalt-based blue pigments ( cobalt blue) have been used since ancient times for jewelry and paints, and to impart a distinctive blue tint to glass, but the color was for a long time thought to be due to the known metal bismuth. Miners had long used the name ''kobold ore'' (German for ''goblin ore'') for some of the blue-pigment-producing minerals; they were so named because they were poor in known metals, and gave poisonous arsenic-containing fumes when smelted. In 1735, such ores were found to be reducible to a new metal (the first discovered since ancient times), and this was ultimately named for the ''kobold''. Today, some cobalt is produced specifically from one of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ilmenite
Ilmenite is a titanium-iron oxide mineral with the idealized formula . It is a weakly magnetic black or steel-gray solid. Ilmenite is the most important ore of titanium and the main source of titanium dioxide, which is used in paints, printing inks, fabrics, plastics, paper, sunscreen, food and cosmetics. Structure and properties Ilmenite is a heavy (specific gravity 4.7), moderately hard (Mohs hardness 5.6 to 6), opaque black mineral with a submetallic luster. It is almost always massive, with thick tabular crystals being quite rare. It shows no discernible cleavage, breaking instead with a conchoidal to uneven fracture. Ilmenite crystallizes in the trigonal system with space group ''R''. The ilmenite crystal structure consists of an ordered derivative of the corundum structure; in corundum all cations are identical but in ilmenite Fe2+ and Ti4+ ions occupy alternating layers perpendicular to the trigonal c axis. Pure ilmenite is paramagnetic (showing only very weak attrac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coltan
Coltan (short for columbite–tantalites and known industrially as tantalite) is a dull black metallic ore from which the elements niobium and tantalum are extracted. The niobium-dominant mineral in coltan is columbite (after niobium's original American name ''columbium''), and the tantalum-dominant mineral is the tantalite. Tantalum from coltan is used to manufacture tantalum capacitors which are used for mobile phones, personal computers, automotive electronics, and cameras. Coltan mining is widespread in the Democratic Republic of Congo. Production and supply Approximately 71% of the global tantalum supply in 2008 was newly mined, 20% was from recycling, and the remainder was from tin slag and inventory. Tantalum minerals are mined in the Democratic Republic of the Congo, Colombia, Rwanda, Australia, Brazil, China, Ethiopia, and Mozambique. Tantalum is also produced in Thailand and Malaysia as a by-product of tin mining and smelting. Potential future mines, in descending ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Odienné
Odienné () is a town in the northwestern part of Ivory Coast. It is the seat of both Denguélé District and Kabadougou Region. It is also a commune and the seat of and a sub-prefecture of Odienné Department. The town of Odienné was founded by Malinké people under Vakaba Touré. Later, Samory Touré founded a support base in the town. Features of Odienné include a large mosque, nearby gold mines, and Vakaba Touré's tomb located in Odienné. The town is served by Odienné Airport. The Stade Municipal is a multi-purpose stadium in the town. St. Augustine Cathedral serves as the cathedral and headquarters for the Roman Catholic Diocese of Odienné, of which Antoine Koné is the bishop. History It is thought that the area surrounding Odienné was first settled by the Senufo people and the Mandinka people. The founding of the town is credited to Vakaba Touré (1800–58), who also founded the Kabadougou Empire, of which Odienné was the capital. The French explorer René Cai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Manganese
Manganese is a chemical element with the symbol Mn and atomic number 25. It is a hard, brittle, silvery metal, often found in minerals in combination with iron. Manganese is a transition metal with a multifaceted array of industrial alloy uses, particularly in stainless steels. It improves strength, workability, and resistance to wear. Manganese oxide is used as an oxidising agent; as a rubber additive; and in glass making, fertilisers, and ceramics. Manganese sulfate can be used as a fungicide. Manganese is also an essential human dietary element, important in macronutrient metabolism, bone formation, and free radical defense systems. It is a critical component in dozens of proteins and enzymes. It is found mostly in the bones, but also the liver, kidneys, and brain. In the human brain, the manganese is bound to manganese metalloproteins, most notably glutamine synthetase in astrocytes. Manganese was first isolated in 1774. It is familiar in the laboratory in the form of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grand-Lahou
Grand-Lahou is a coastal town in southern Ivory Coast. It is a sub-prefecture of and the seat of Grand-Lahou Department in Grands-Ponts Region, Lagunes District. Grand-Lahou is also a commune. Grand-Lahou is situated where the Bandama River meets the Gulf of Guinea. It was occupied by the British, Germans and Dutch before the French developed it as a trading port from 1890. Grand-Lahou is a popular base for visitors to the Assagny National Park Assagny National Park or Azagny National Park is a national park in the south of Ivory Coast. It is situated on the coast some to the west of Abidjan, between the mouth of the Bandama River and the Ébrié Lagoon, and occupies an area of about . .... In 2021, the population of the sub-prefecture of Grand-Lahou was 77,479. Villages The twenty villages of the sub-prefecture of Grand-Lahou and their population in 2014 are: [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
