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Anorthosite

Igneous Rocks

Anorthosite is a coarse-grained intrusive igneous rock characterized by its composition: mostly plagioclase feldspar at ninety to one hundred percent, with a minimal mafic component of zero to ten percent. It forms through density separation, as plagioclase crystals, being less dense than magma, float to the top of a magma chamber and concentrate there as they crystallize. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/

Facts
Classification
Classification
Igneous Rock 1
Use
Building and Construction 1
Use
Gemstone 1
Use
Ore or Metal Extraction 1
Kind
Rock 1
Formation Class
Igneous, intrusive (a plagioclase feldspar-dominated rock formed by flotation of low-density crystals in a magma chamber) 1
Connections

Classified As

Igneous Rocks, Subcategories

In Discipline

Geology, Disciplines
Sources
1. Anorthosite (Wikipedia)
Wikimedia Foundation
  • Lead section
    plagioclase crystals are usually less dense than magma; so, as plagioclase crystallizes in a magma chamber, the plagioclase crystals float to the top, concentrating there.
  • Article body
    Anorthosite could potentially be used in aluminium production as an alternative to bauxite. === Contents === The primary economic value of anorthosite bodies is the titanium-bearing oxide ilmenite.
  • Article body, ore-or-metal-extraction
    Anorthosite could potentially be used in aluminium production as an alternative to bauxite. === Contents === The primary economic value of anorthosite bodies is the titanium-bearing oxide ilmenite.
  • Article body, building-and-construction
    However, some Proterozoic anorthosite bodies have large amounts of labradorite, which is quarried for its value as both a gemstone and a building material.
  • Article body, gemstone
    However, some Proterozoic anorthosite bodies have large amounts of labradorite, which is quarried for its value as both a gemstone and a building material.
  • Lead section
    Anorthosite () is a phaneritic, intrusive igneous rock characterized by its composition: mostly plagioclase feldspar (90-100%), with a minimal mafic component (0-10%).
View the Source
Wikidata: Anorthosite
Wikidata Q567788
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