wolframite

[ woo l-fruh-mahyt, vawl- ]
/ ˈwʊl frəˌmaɪt, ˈvɔl- /
|

noun

a mineral, iron manganese tungstate, (Fe,Mn)WO4, occurring in heavy grayish-black to brownish-black tabular or bladed crystals: an important ore of tungsten.
Also wolfram.

Origin of wolframite

First recorded in 1865–70; wolfram + -ite1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for wolframite

  • Before the war nearly half of the world's supply of tungsten ore (wolframite) came from Burma.

    Creative Chemistry|Edwin E. Slosson

British Dictionary definitions for wolframite

wolframite

/ (ˈwʊlfrəˌmaɪt) /

noun

a black to reddish-brown mineral consisting of tungstates of iron and manganese in monoclinic crystalline form: it occurs mainly in quartz veins and is the chief ore of tungsten. Formula: (Fe,Mn)WO 4
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012