Mineralogy Database

Jedwabite Mineral Data

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General Jedwabite Information

Help on Chemical  Formula: Chemical Formula: Fe7(Ta,Nb)3
Help on Composition: Composition: Molecular Weight = 708.80 gm
   Tantalum  38.29 %  Ta
   Niobium    6.55 %  Nb
   Iron      55.15 %  Fe
            100.00 % 
Help on Empirical Formula: Empirical Formula: Fe0+7Ta1.5Nb0.5
Help on Environment: Environment: Discovered in platiniferous placers in the Nizhnetagilsky District in the Middle Urals, in a collection made by P. Walther at the beginning of the 20th century, in association with niobocarbide and a tantalum carbide.
Help on IMA Status: IMA Status: Approved IMA 1995 (Dana # Added)
Help on Locality: Locality: Nijniy-Tagil, near Solovjeva mountains (formerly Aurorinsky mine) and Baranchinsky massif near the Aktai River, Middle Urals, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For Jacques Jedwab, Universite Libre de Bruxelles, Belgique, in recognition of his meticulous investigations of the mineralogy of placers and of carbides in natural environments.
Help on Name Pronunciation: Name Pronunciation: Jedwabite + Pronunciation Say JEDWABITE
Help on Synonym: Synonym: IMA1995-043