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Mineralpedia Details for Uvarovite

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Uvarovite

Uvarovite

A member of the Garnet Group, Uvarovite gets its name from the President of the Academy of Sciences in St. Petersberg and Russian nobleman Count Sergei Semenovich Uvarov. Uvarovite can be found as an alteration mineral of chromite-bearing serpentinite as well as in response to a reaction between dolomite and chromite in metamorphosed limestone and skarn. It is an uncommon garnet, but with several localities including Russia, exceptional crystals from Finland, Spain, Canada, the United States, Taiwan, and Turkey, among others. The name “Uvarovite” is occasionally used to describe chromium bearing garnets or green garnets of other species, however this is a misnomer.

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

Formula
Ca3Cr2(SiO4)3 
Crystal System
Isometric 
Crystal Habit
Crystalline - Fine, Crystalline - Fine, Lamellar 
Cleavage
None, None, None 
Luster
Vitreous (Glassy) 
Color
green 
Streak
white 
Class
Isometric - Hexoctahedral 
Fracture
Brittle 
Hardness
6.5-7 
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Uvarovite from Red Ledge mine, Nevada Co., California, United States

Uvarovite
            from Red Ledge mine, Nevada Co., California, United States Colorful specimen composed of micro, euhedral green Uvarovite crystals to about 0.5mm with reddish purple chromian Clinochlore.
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Uvarovite from Saranovskii mine, Urals Region, Russia

Uvarovite
            from Saranovskii mine, Urals Region, Russia

Dark green, euhedral crystal to 3mm.

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Uvarovite from Outokumpu, Finland

Uvarovite
            from Outokumpu, Finland

Rare emerald green, chromium Uvarovite garnet. The single crystal measures 5mm.

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Uvarovite from Jacksonville dist., Mother Lode Belt, Tuolumne Co., California, United States

Uvarovite
            from Jacksonville dist., Mother Lode Belt, Tuolumne Co., California, United States

Good coverage of tiny bright green dodecahedral crystals of Uvarovite.

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