wolframite

英['wʊlfrəmaɪt] 美['wʊlfrəmˌaɪt]
  • n. 钨锰铁矿;铁锰重石;黑钨矿
Noun:
  1. a mineral consisting of iron and manganese tungstate in crystalline form; the principal ore of tungsten; found in quartz veins associated with granitic rocks