Wolframite n. (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.
... cassiterite (tin ore) and wolframite (tungsten ore), tin, cement, agricultural processing, small-scale beverage production, soap, furniture, shoes, plastic goods, ... — The 1991 CIA World Factbook • United States. Central Intelligence Agency.
...
