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Mineralpedia Details for Austinite

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Austinite

Austinite

Named for former American mineralogist and Professor at Stanford University in California, USA, Austin Flint Rogers. Austinite is an uncommon to rare secondary mineral that occurs in oxidized arsenic-rich base metal deposits in localities in the United States, Mexico, Bolivia, Greece, Namibia, and Australia, among others. Minerals associated with Austinite include adamite, talmessite , limonite and quartz.

Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/austinite.pdf

Formula
CaZnAsO4(OH) 
Crystal System
Orthorhombic 
Cleavage
Good, None, None 
Luster
Subadamantine 
Color
brown, colorless, green, yellowish white, white 
Streak
white 
Class
Orthorhombic - Disphenoidal 
Fracture
Brittle - Uneven 
Hardness
4-4.5 
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Mindat
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Austinite from Mina Ojuela, Mapimi, Durango, Mexico

Austinite
            from Mina Ojuela, Mapimi, Durango, Mexico

This piece has outstanding, green crystals to 3.5mm. Excellent, handsome specimen from this locality.

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Austinite from Gold Hill mine, Tooele Co., Utah, United States

Austinite
            from Gold Hill mine, Tooele Co., Utah, United States

Lime green bladed Cuprian Austinite crystals in clusters to 0.75mm.

and

3mm crystal ball-like clusters of Austinite with a nice greyish white color in limonitic matrix.

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