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

Example sentences 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