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wolframite

[woo l-fruh-mahyt, vawl-]
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noun
  1. 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.
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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. 2018

Examples from the Web for wolframite

Historical Examples

  • 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

noun
  1. 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
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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