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Nifontovite is a very rare borate mineral. It is a soft stone, only 3.5 on the Moh's scale of hardness. Nifontovite is transparent and typically colorless or gray with a vitreous luster. It was discovered in 1961 and named for the Russian geologist, Roman V. Nifontov (1901-1960). Nifontovite has been found in Russia, Mexico, and Japan. It is the first nifontovite for the National Gem Collection.

Image Number: Ken Larsen
Catalog Number: G10625
Weight: 0.48 carats
Gift of Yuko Tanaka , 2009
Locality: Fuka Mine, Fuka, Bicchu, Kawakami, Okayama , Japan


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Smithsonian National Museum of Natural History Department of Mineral Sciences website Credits