- potassic feldspar
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калиевый полевой шпат
English-Russian dictionary of geology. 2011.
potassic feldspar
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Aegirine — crystals in matrix General Category Silicate mineral, Pyroxene … Wikipedia
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
Nepheline syenite — of the Intrusive Complex of Tanguá, State of Rio de Janeiro, Brasil (Motoki et al., 2011a) Nephelene syenite is a holocrystalline plutonic rock that consists largely of nepheline and alkali feldspar. The rocks are mostly pale colored, grey or… … Wikipedia
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Ultrapotassic igneous rocks — are a class of rare, volumetrically minor generally ultramafic or mafic silica depleted igneous rocks. Ultrapotassic rocks are defined by molar K2O/Na2O >3 in much of the scientific literature. In other papers written as recently as 2005, they… … Wikipedia
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Essexite — (pronounced|ˈɛsəksaɪt), also called nepheline monzogabbro (IPA|/ˈnɛfəliːn ˌmɒnzoʊˈgæbroʊ/) is a dark gray or black holocrystalline plutonic igneous rock. Its name is derived from the type locality in Essex County, MA.Modern petrology identifies… … Wikipedia
