Found 1 items, similar to gray copper ore.
English → English (gcide) Definition: gray copper ore Tetrahedrite \Tet`ra*he"drite\, n. [So called because the crystals of the species are commonly tetrahedrons.] (Min.) A sulphide of antimony and copper, with small quantities of other metals. It is a very common ore of copper, and some varieties yield a considerable presentage of silver. Called also gray copper ore, fahlore, and panabase. [1913 Webster]