Synonymer & Information om | Engelska ordet ANORTHOCLASE

Exempel på hur du använder ANORTHOCLASE i en mening

• Volcanic rocks found at Mount Moulton include pantellerite, phonolite and trachyte; phenocryst phases found in the pantellerite include aenigmatite, anorthoclase, fayalite, hedenbergite, ilmenite and quartz.
• 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).
• Sanidine and high albite constitute a solid solution series with intermediate compositions termed anorthoclase.
• In some limburgites large phenocrysts of dark brown hornblende and biotite are found, mostly with irregular borders blackened by resorption; in others there are large crystals of anorthoclase.
• Within the Mascall Formation is a widespread ignimbrite unit which consists of 97 to 99 percent glass shards and minor amounts of anorthoclase, quartz, magnetite, zircon, and clinopyroxene.
• On Pantelleria the rock is usually found as a vitrophyre containing phenocrysts of anorthoclase or sanidine.
• The tephrites contain analcime, anorthoclase, clinopyroxene, hauyne, magnetite, olivine, phlogopite and pyroxene dominated by augite and lesser aegirine.
• Other minerals in this group include adularia, anorthoclase, buddingtonite, celsian, hyalophane, microcline, monalbite, orthoclase, and sanidine.
• More specifically, it is a variety of porphyritic phonolite or trachyte with rhomb-shaped phenocrysts of anorthoclase with variable amounts of olivine and augite in a glassy matrix; the glass may be devitrified.
• The trachyte contains a matrix of sodic plagioclase alkali feldspar, katophorite, arfvedsonite, aenigmatite and opaque oxides that is embedded with sparse phenocrysts of anorthoclase and sodic ferrohedenbergite.

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