noun Etymology: German Wolframit, from Wolfram Date: circa 1868 a brown to black mineral that consists of a tungstate of iron and manganese occurring especially in monoclinic crystals and used as a source of tungsten
WOLFRAMITE
Meaning of WOLFRAMITE in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012