- pyroxene-perthite
- пироксен-пертит
English-Russian dictionary of geology. 2011.
pyroxene-perthite
Смотреть что такое "pyroxene-perthite" в других словарях:
Litchfieldite — is a rare metamorphosed igneous rock. It is a variety of nepheline syenite and is composed of two near pure phases of feldspar, albite and microcline, with predominance of the first one, plus nepheline, sodalite, cancrinite and calcite. The mafic … Wikipedia
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
Charnockite — Late stage charnockite dykes cutting anorthosite, Rogaland, Norway Charnockite ( … Wikipedia
rhyolite — rhyolitic /ruy euh lit ik/, adj. /ruy euh luyt /, n. a fine grained igneous rock rich in silica: the volcanic equivalent of granite. [1865 70; rhyo (irreg. < Gk rhýax stream of lava) + LITE] * * * Igneous rock that is the volcanic equivalent of… … Universalium
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
Geochemistry — The field of geochemistry involves study of the chemical composition of the Earth and other planets, chemical processes and reactions that govern the composition of rocks and soils, and the cycles of matter and energy that transport the Earth s… … 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
Callander Bay — is a bay at the extreme east of Lake Nipissing in Ontario, Canada. It is 3 km in diameter and the main community of Callander is located just east of Callander Bay.GeologyCallander Bay is an eroded Proterozoic volcanic pipe [… … Wikipedia
syenite — syenitic /suy euh nit ik/, adj. /suy euh nuyt /, n. a granular igneous rock consisting chiefly of orthoclase and oligoclase with hornblende, biotite, or augite. [1790 1800; < L syenites (lapis) (stone) of SYENE < Gk syenítes (líthos); see ITE1] * … Universalium
SILICATES — Les silicates et les différentes formes de silice qui s’y rattachent ont une importante industrielle et géochimique considérable. Ces minéraux, matières premières des industries du bâtiment, de la verrerie, de la céramique, et constituants des… … Encyclopédie Universelle
