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Search Mineralpedia – A Mineral Photo Database and Identification Guide


Sergei L’vovich Ushkov, a Russian naturalist who researched the Il’men National Forest in Russia, is the namesake of Ushkovite. Somewhat uncommon, UShkovite is found in only a few localities worldwide, including Russia, the USA, Namabia, and Brazil, and occurs as an alteration of weathered triplite in granite pegmatites.

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


Named for the state of Utah, USA where the mineral was discovered at its type locality, the Centennial Eureka mine. Utahite can be found only in the United States in the mine dumps as a rare secondary mineral from the oxidized zone of Cu-Zn-Te bearing hydrothermal deposits. Utahite has also been found at the Empire mine in Arizona, USA.

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


Named for its compositional constituents uranium (u) and vanadium (van). Uvanite occurs in Colorado Plateau-type uranium deposits, at its type locality, Temple Rock, Utah, USA, specifically in asphaltic sandstone. Uvanite can be found in only three countries worldwide, additionally including Argentina and Slovenia.

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


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

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