- pegmatite ore
- пегматитовая руда
English-Russian mining dictionary. В.П. Манышев.
pegmatite ore
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Ore genesis — The various theories of ore genesis explain how the various types of mineral deposits form within the Earth s crust. Ore genesis theories are very dependent on the mineral or commodity. Ore genesis theories generally involve three components:… … Wikipedia
pegmatite — pegmatitic /peg meuh tit ik/, adj. /peg meuh tuyt /, n. Petrol. a coarsely crystalline granite or other high silica rock occurring in veins or dikes. [1825 35; < Gk pegmat (s. of pêgma) anything fastened together, a bond (Compare pegnýein to… … Universalium
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Barringer Hill — is a famous geological and mineralogical site in central Texas. It lies on the former west side of the Colorado river, beneath Lake Buchanan, about convert|22|mi|km northeast of the town of Llano. The hill consists of a pegmatite and geologically … Wikipedia
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niobium processing — Introduction preparation of the ore for use in various products. Niobium (Nb) has a body centred cubic (bcc) crystal structure and a melting point of 2,468° C (4,474° F). Of the refractory metals, it has the lowest density and best… … Universalium
Uranium mining — The Ranger Uranium Mine in Australia … Wikipedia
mineral deposit — Introduction aggregate of a mineral in an unusually high concentration. About half of the known chemical elements (chemical element) possess some metallic (metal) properties. The term metal, however, is reserved for those chemical… … Universalium
