Tetrahedrite

POS

Noun

HYPHEN

tet=ra=he=drite

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CIDE DICTIONARY

Tetrahedrite, n. [So called because the crystals of the species are commonly tetrahedrons.].

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]

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