File:Amygdaloidal_andesite.jpg · Wikimedia Commons · See Wikimedia Commons
Andesit
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Andesite is a volcanic rock that falls between basalt and rhyolite in terms of silica content, making it an intermediate type of igneous rock. It is composed mainly of sodium-rich plagioclase minerals along with pyroxene or hornblende, and has a fine-grained texture that may include some larger crystals visible to the naked eye.
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Key facts
- Rock.name
- Andesite
- Rock.type
- Igneous
- Rock.image
- Amygdaloidal andesite.jpg
- Rock.caption
- A sample of andesite (dark groundmass) with amygdaloidal vesicles filled with zeolite. Diameter of view is 8 cm.
- Rock.composition
- Intermediate: plagioclase (often andesine) and pyroxene or hornblende
- Rock.composition_secondary
- Magnetites, biotite, sphene, and quartz
via Wikipedia infobox
Wikidata facts
- Subclass of
- volcanic rock
- Image
- Amygdaloidal andesite.jpg
Show 3 more facts
- described by source
- Encyclopædia Britannica 11th edition
- Commons category
- Andesite
- exact match
- purl.obolibrary.org/obo/ENVO_01000441
Sources (6)
via Wikidata · CC0
Article · Deutsch
Andesit (auch: Islandit) ist ein vulkanisches Gestein mit mittlerem SiO2-Gehalt (intermediärer Vulkanit). Sein plutonisches Pendant ist der Diorit.
Abstract from DBpedia / Wikipedia · CC BY-SA
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