- pegmatite rock
- пегматитовая порода
English-Russian mining dictionary. В.П. Манышев.
pegmatite rock
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Pegmatite — is a very coarse grained igneous rock that has a grain size of 20 mm or more; such rocks are referred to as pegmatitic .Most pegmatites are composed of quartz, feldspar and mica; in essence a granite . Rarer intermediate and mafic pegmatite… … Wikipedia
Rock microstructure — includes the texture of a rock and the small scale rock structures. The words texture and microstructure are interchangeable, with the latter preferred in modern geological literature. However, texture is still acceptable because it is a useful… … Wikipedia
pegmatite — [peg′mə tīt΄] n. [< Gr pēgma (gen. pēgmatos), a framework, something fastened together (< IE base * paĝ : see FANG) + ITE1: from its texture] a light colored, coarsegrained, intrusive igneous rock, usually granitic, containing large… … English World dictionary
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
pegmatite — noun A coarsely crystalline igneous or plutonic rock composed primarily of feldspar and quartz, normally with muscovite and/or biotite mica. Often contains other minerals, which may be of economic importance. Pegmatite is chemically identical to… … Wiktionary
pegmatite — [ pɛgmətʌɪt] noun Geology a coarsely crystalline granite or other igneous rock with crystals several centimetres in length. Origin C19: from Gk pēgma, pēgmat thing joined together + ite1 … English new terms dictionary
pegmatite — peg•ma•tite [[t]ˈpɛg məˌtaɪt[/t]] n. pet a coarsely crystalline granite or other high silica rock occurring in veins or dikes • Etymology: 1825–35; < Gk pēgmat (s. of pêgma) anything fastened together, a bond (cf. pēgnýein to stick) + ite I… … From formal English to slang
pegmatite — /ˈpɛgmətaɪt/ (say pegmuhtuyt) noun a coarsely crystalline granite or other rock occurring in veins or dykes. {Greek pegma something fastened together + ite1} …
igneous rock — Any of various crystalline or glassy, noncrystalline rocks formed by the cooling and solidification of molten earth material (magma). Igneous rocks comprise one of the three principal classes of rocks, the others being metamorphic and sedimentary … Universalium
Igneous rock — Geologic provinces of the world (USGS) Shield … Wikipedia
List of rock types — This page is intended as a list of all rock types. NOTOC A : Amphibolite: Andesite: Anorthosite : Anthracite: Aplite: Argillite: Arkose B : Banded iron formation: Basalt: Basanite: Blueschist: Boninite: Breccia C : Carbonatite: Cataclasite: Chalk … Wikipedia
