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wolframite
From The Collaborative International Dictionary of English v.0.48:
Wolframite \Wol"fram*ite\, n. [G., wolframit, wolfram; wolf wolf + rahm cream, soot; cf. G. wolfsruss wolfram, lit., wolf's soot.] (Min.) Tungstate of iron and manganese, generally of a brownish or grayish black color, submetallic luster, and high specific gravity. It occurs in cleavable masses, and also crystallized. Called also wolfram. [1913 Webster]
