feldspar-free

feldspar-free
лишенный полевого шпата

English-Russian dictionary of geology. 2011.

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  • schönfelsite — ˈshōnˌfelˌzīt, ˈshə(r)n noun ( s) Etymology: German schönfelsit, from Altschönfels, Saxony, Germany + German it ite : a feldspar free basalt with phenocrysts of olivine and augite in a dense groundmass of titanomagnetite, orthorhombic pyroxene,… …   Useful english dictionary

  • sedimentary rock — Rock formed at or near the Earth s surface by the accumulation and lithification of fragments of preexisting rocks or by precipitation from solution at normal surface temperatures. Sedimentary rocks can be formed only where sediments are… …   Universalium

  • 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

  • chemical element — Introduction also called  element,         any substance that cannot be decomposed into simpler substances by ordinary chemical processes. Elements are the fundamental materials of which all matter is composed.       This article considers the… …   Universalium

  • Geology of Tasmania — Tasmania has a varied geological history, with the world s biggest exposure of diabase, or dolerite. Rocks from the Neoproterozoic, Paleozoic and Mesozoic time periods appear. It is one of the few southern hemisphere areas glaciated during the… …   Wikipedia

  • Angola — Angolan, adj., n. /ang goh leuh/, n. a republic in SW Africa: formerly an overseas province of Portugal; gained independence Nov. 11, 1975. 10,623,994; 481,226 sq. mi. (1,246,375 sq. km). Cap.: Luanda. Formerly, Portuguese West Africa. * * *… …   Universalium

  • Hong Kong — Hong Konger. Hongkongite, n. /hong kong / 1. a British crown colony comprising Hong Kong island (29 sq. mi.; 75 sq. km), Kowloon peninsula, nearby islands, and the adjacent mainland in SE China (New Territories): reverted to Chinese sovereignty… …   Universalium

  • trachyte — trachytic /treuh kit ik/, trachytoid /trak i toyd , tray ki /, adj. /tray kuyt, trak uyt/, n. a fine grained volcanic rock consisting essentially of alkali feldspar and one or more subordinate minerals, as hornblende or mica: the extrusive… …   Universalium

  • Characters of Malcolm in the Middle — The cast of Malcolm in the Middle in season 1. (From upper left to upper right) Christopher Kennedy Masterson as Francis, Jane Kaczmarek as Lois and Bryan Cranston as Hal. (Middle) Frankie Muniz as Malcolm. (Bottom left to bottom right) Erik Per… …   Wikipedia

  • Italy — /it l ee/, n. a republic in S Europe, comprising a peninsula S of the Alps, and Sicily, Sardinia, Elba, and other smaller islands: a kingdom 1870 1946. 57,534,088; 116,294 sq. mi. (301,200 sq. km). Cap.: Rome. Italian, Italia. * * * Italy… …   Universalium

  • Leucite — is a rock forming mineral composed of potassium and aluminium tectosilicate K [AlSi2O6] . Crystals have the form of cubic icositetrahedra but, as first observed by Sir David Brewster in 1821, they are not optically isotropic, and are therefore… …   Wikipedia


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