Anorthosite - Wikipedia
Anorthosite (/ əˈnɔːrθəsaɪt /) is a phaneritic, intrusive igneous rock characterized by its composition: mostly plagioclase feldspar (90–100%), with a minimal mafic component (0–10%). Pyroxene, ilmenite, magnetite, and olivine are the mafic minerals most commonly present.
Anorthosite : Properties, Formation, Occurrence and Uses
2023年8月26日 · Anorthosite is a type of igneous rock that is primarily composed of a mineral called plagioclase feldspar. It is known for its distinctive light-colored appearance, often characterized by a white to light gray coloration.
Anorthosite | Igneous, Plutonic, Mafic | Britannica
Anorthosite, type of intrusive igneous rock composed predominantly of calcium-rich plagioclase feldspar. All anorthosites found on Earth consist of coarse crystals, but some samples of the rock taken from the Moon are finely crystalline.
Anorthosite: Description, Characteristics, and Other FAQs
Anorthosite is a type of intrusive igneous rock that is composed primarily of labradorite or plagioclase feldspar. This rock type forms when magma rises into the Earth’s crust and slowly cools down, allowing large crystals of feldspar to form.
Anorthosite - an overview | ScienceDirect Topics
Anorthosite is an igneous rock and has been defined based on its content of more than 90% plagioclase feldspar (Streckeisen, 1976). It has a minimal mafic component (0–10 wt.%) of pyroxene, ilmenite [Fe 2+ TiO 3 ], magnetite, and olivine.
Anorthosite - Classification, Formula, Uses and FAQs - Vedantu
Anorthosite is a coarse-grained, light-coloured containing rich elements of plutonic rock. It is mainly composed of plagioclase (generally bytownite or labradorite) also sometimes with small amounts of pyroxene.
Anorthosite - SpringerLink
Anorthosite is a coarse-grained rock composed essentially of plagioclase feldspar in the range andesine to anorthite. The term was coined by T. S. Hunt in 1863 to apply to rocks composed of “anorthose” feldspars, an obsolete term for triclinic feldspars.
Anorthosite: Mineral information, data and localities. - mindat.org
A coarse-grained crystalline rock consisting mostly of calcic plagioclase (>90%, usually labradorite) with <10% mafics. The mafic mineral may be clinopyroxene, orthopyroxene, olivine, or, more rarely, amphibole.
GemRocks: Anorthosite - Central Michigan University
DESCRIPTION: Anorthosite is an igneous rock that consists of 90 or more percent of plagioclase feldspar, which is labradorite in a large percentage of the anorthosites used as gemrocks (see additional statements about this rock and its name and …
Anorthosite - chemeurope.com
Anorthosite (pronounced /æˈnɔrθəsaɪt/, /ə-/) is a phaneritic, intrusive igneous rock characterized by a predominance of plagioclase feldspar (90-100%), and a minimal mafic component (0-10%). Pyroxene, ilmenite, magnetite, and olivine are the mafic minerals most commonly present.
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