A group of rock-forming silicate minerals, the single most abundant mineral group in the Earth's crust, and the source of the pale crystals that give granite its speckled look. 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
Formation ClassFramework silicate, the most abundant mineral group in the Earth's crust 2 Chemical FormulaKAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8 (end-member series) 1 Hardness (Mohs)Standard reference value for the feldspar group generally; individual species vary slightly. Classification
Classification UseCeramic and Glass Manufacture 1 Connections
Associated With
Plagioclase feldspar is one of the two defining minerals of amphibolite, alongside amphibole.
Granite's own lead description names alkali feldspar as one of its main constituent minerals.
Source Granite (Wikipedia)
The pale leucosome bands of a migmatite are quartzofeldspathic melt segregations.
Monzonite is defined by roughly equal plagioclase and alkali feldspar with little quartz.
Feldspar named as one of the three dominant minerals of most pegmatites.
Source Pegmatite (Wikipedia)
Sanidine and plagioclase are both feldspar-group minerals; feldspar is a principal mineral of rhyolite.
Source Rhyolite (Wikipedia)
Trachyte is defined by its dominant alkali feldspar content.
Classified As
Entity-backed identity for the material classification this material already carries as an enum fact, pointing at the class subcategory of the same name. The enum fact itself stays on the entity unchanged.
In Discipline
Source Mineral (Wikipedia)
Sources
1. Feldspar (Wikipedia)
Wikimedia FoundationComposition section
orthoclase endmember KAlSi3O8, albite endmember NaAlSi3O8, anorthite endmember CaAl2Si2O8
Entity classification (SubLabel)
A group of rock-forming silicate minerals, the single most abundant mineral group in the Earth's crust, and the source of the pale crystals that give granite its speckled look.
Feldspar (Wikipedia), Applications section
Feldspar is a common raw material used in glassmaking, ceramics
View the Source 2. Mineral (Wikipedia)
Wikidata: Feldspar
Wikidata Q170258Quote, Wikidata Q170258
P279 subclass chain verified to reach rock (Q8063) or mineral (Q7946) within a few hops; identified via Wikipedia pageprops (article title match), PlaybookNote 38526.
Granite (Wikipedia)
Wikimedia FoundationAssociated With: Granite, Lead sectionQuote, Associated With: Granite, Lead section
is a coarse-grained (phaneritic) intrusive igneous rock composed mostly of quartz, alkali feldspar, mica and plagioclase.
Rhyolite (Wikipedia)
Wikimedia FoundationAssociated With: Rhyolite, Mineralogy sectionQuote, Associated With: Rhyolite, Mineralogy section
The mineral assemblage is predominantly quartz, sanidine, and plagioclase.
Pegmatite (Wikipedia)
Wikimedia FoundationAssociated With: Pegmatite, Lead sectionQuote, Associated With: Pegmatite, Lead section
Most pegmatites are composed of quartz, feldspar, and mica, having a similar silicic composition to granite.
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