alarsite
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Alarsite (AlAsO4) is an aluminium arsenate mineral with its name derived from its composition: aluminium and arsenate. It occurs as brittle subhedral grains which exhibit trigonal symmetry. It has a Mohs hardness of 5-5.5 and a specific gravity of 3.32. It is semitransparent, colorless with pale yellow tints and shows a vitreous luster. It is optically uniaxial (+) with refractive indices of nω = 1.596 and nε = 1.608.
In the Vinony graph
Within Vinony's link graph, alarsite is referenced by 8 other articles, and connects out to Mohs scale of mineral hardness, refractive index and aluminium.
It sits within the topics Aluminium minerals, Arsenate minerals and Geology of Russia.
Its subject is documented across 8 Wikipedia language editions.
Wikidata facts
- Subclass of
- aluminium arsenate
- Named after
- arsenic
- Image
- Alarsite.jpg
Show 7 more facts
- chemical formula
- AlAsO₄
- Nickel-Strunz 9th edition (updated 2009)
- 8.AA.05
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 8.AA.05
- crystal system
- trigonal crystal system
- Commons category
- Alarsite
- streak color
- white
- IMA Mineral Symbol
- Ars
Sources (1)
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Encyclopedic overview
1 sectionsContents
- References
Alarsite (AlAsO4) is an aluminium arsenate mineral with its name derived from its composition: aluminium and arsenate. It occurs as brittle subhedral grains which exhibit trigonal symmetry. It has a Mohs hardness of 5-5.5 and a specific gravity of 3.32. It is semitransparent, colorless with pale yellow tints and shows a vitreous luster. It is optically uniaxial (+) with refractive indices of nω = 1.596 and nε = 1.608.
It was reported from fumaroles in the Tolbachik volcano, Kamchatka, Far Eastern Region, Russia. It occurs in association with fedotovite, klyuchevskite, lammerite, nabokoite, atlasovite, langbeinite, hematite and tenorite.
Excerpted from Wikipedia’s “alarsite” article, available under the CC BY-SA 4.0 licence.