- sodic plagioclase
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натровый плагиоклаз
English-Russian dictionary of geology. 2011.
sodic plagioclase
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metamorphic rock — Any of a class of rocks that result from the alteration of preexisting rocks in response to changing geological conditions, including variations in temperature, pressure, and mechanical stress. The preexisting rocks may be igneous, sedimentary,… … Universalium
Phenocryst — A phenocryst is a relatively large and usually conspicuous crystal distinctly larger than the grains of the rock groundmass of a porphyritic igneous rock. Phenocrysts often have euhedral forms either due to early growth within a magma or by post… … Wikipedia
Moon rock — Olivine basalt collected by Apollo 15. Moon rock describes rock that formed on the Earth s moon. The term is also loosely applied to other lunar materials collected during the course of human exploration of the Moon. The rocks collect … Wikipedia
Geology of Taiwan — Taiwan is active geologically, showing plate boundary tectonics. The island formed at the junction of the Luzon Volcanic Arc (吕宋岛火山弧) and the Ryukyu Volcanic Arc (琉球火山弧). Subduction changes direction at Taiwan. South of the island, the Philippine … Wikipedia
Restite — is the residual material left at the site of melting during the in place production of granite through intense metamorphism.Generally, restite is composed of a predominance of mafic minerals because these are harder to melt (see Bowen s reaction… … Wikipedia
Picrite basalt — or oceanite from the Piton de la Fournaise Picrite basalt, picrobasalt or oceanite[citation needed] is a variety of high magnesium olivine basalt that is very rich in the miner … Wikipedia
Komatiite — Komatiites are ultramafic mantle derived volcanic rocks. They have low SiO2, low K2O, low Al2O3, and high to extremely high MgO. They were named for their type locality along the Komati River in South Africa. True komatiites are very rare and… … Wikipedia
Phonolite — Aegirine phonolite. Dark prismatic minerals are aegirine phenocrysts. Phonolite is a rare igneous, volcanic (extrusive) rock of intermediate (between felsic and mafic) composition, with aphanitic to porphyritic texture. The name phonolite comes… … Wikipedia
Bostonite — Bostonite, in petrology, is a fine grained, pale colored, grey or pinkish intrusive rock, which consists essentially of alkali feldspar (orthoclase, perthite, anorthoclase, and albite). Some samples may contain a small amount of interstitial… … Wikipedia
Trachyandesite — is an extrusive igneous rock. It has little or no free quartz, but is dominated by alkali feldspar and sodic plagioclase along with one or more of the following mafic minerals: amphibole, biotite or pyroxene. Small amounts of nepheline may be… … Wikipedia
rhyolite — ALASKA VOLCANO OBSERVATORY GLOSSARY Volcanic rock (or lava) that characteristically is light in color, contains 69% silica or more, and is rich in potassium and sodium. GLOSSARY OF VOLCANIC TERMS A volcanic rock containing greater than 68% silica … Glossary of volcanic terms
