Category:Tetrahedrite

Tet`ra*he"drite, n. Etym: [so called because the crystals of the Species are commonly tetrahedrons.] (min.)

Defn: 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.