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Tharsis-La Zarza Mining Basin
The Tharsis-La Zarza mining basin, colloquially known as the Tharsis mines, is a Spanish mining area located in the province of Huelva. Its main centers are in the municipalities of Alosno, Calañas, El Cerro de Andévalo, Cerro de Andévalo and La Zarza-Perrunal. The basin is part of the Iberian Pyrite Belt. Historically, this area has been exploited for mining purposes, and an important mining-industrial complex has been developed. There is material and archaeological evidence of mining activities throughout various periods of antiquity. However, the peak of exploitation was reached in the course of the 19th and 20th centuries under the management of the British Tharsis Sulphur and Copper Company Limited, which introduced modern methods of extraction and began the exploitation of surface mining deposits through the "Surface mining#Types, cortas" system. During this period, important industrial facilities, railway lines, mining towns, etc. were also built. The Tharsis mines have ... [...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] |
Silver
Silver is a chemical element with the Symbol (chemistry), symbol Ag (from the Latin ', derived from the Proto-Indo-European wikt:Reconstruction:Proto-Indo-European/h₂erǵ-, ''h₂erǵ'': "shiny" or "white") and atomic number 47. A soft, white, lustrous transition metal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal. The metal is found in the Earth's crust in the pure, free elemental form ("native silver"), as an alloy with gold and other metals, and in minerals such as argentite and chlorargyrite. Most silver is produced as a byproduct of copper, gold, lead, and zinc Refining (metallurgy), refining. Silver has long been valued as a precious metal. Silver metal is used in many bullion coins, sometimes bimetallism, alongside gold: while it is more abundant than gold, it is much less abundant as a native metal. Its purity is typically measured on a per-mille basis; a 94%-pure alloy is described as "0.940 fine". As one of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gold
Gold is a chemical element with the symbol Au (from la, aurum) and atomic number 79. This makes it one of the higher atomic number elements that occur naturally. It is a bright, slightly orange-yellow, dense, soft, malleable, and ductile metal in a pure form. Chemically, gold is a transition metal and a group 11 element. It is one of the least reactive chemical elements and is solid under standard conditions. Gold often occurs in free elemental (native state), as nuggets or grains, in rocks, veins, and alluvial deposits. It occurs in a solid solution series with the native element silver (as electrum), naturally alloyed with other metals like copper and palladium, and mineral inclusions such as within pyrite. Less commonly, it occurs in minerals as gold compounds, often with tellurium ( gold tellurides). Gold is resistant to most acids, though it does dissolve in aqua regia (a mixture of nitric acid and hydrochloric acid), forming a soluble tetrachloroau ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
La Zarza Mine
La Zarza mine is an abandoned mine near the town of La Zarza-Perrunal, Huelva, Andalusia, Spain. The deposit is part of the Spanish part of the Iberian Pyrite Belt. The orebody is 2,900 meters long and up to 100 meters thick. Like most of the volcanogenic massive sulfide ore deposit in the IPB it contains significant amounts of copper, zinc, lead, silver and gold. The first indications for mining go back to 1500 BC. The mine was operated by the Romans from 100 AD till 300 AD. After that time the mining activities stopped and the deposit was rediscovered in the 19th century and the mine was opened in 1853. The ore output in the mid 1970s was 600,000 t/year. The mine closed in 1996 and the underground levels were flooded. See also * Compañía Española de Minas de Tharsis The Compañía Española de Minas de Tharsis was a SpanishIt is also cited as the "Compañía Española de Azufre y Cobre de Tharsis" (Sáez, Donaire y Moreno, 2017, p. 99). company belonging to the mining sect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
