tennantite

noun

ten·​nant·​ite

ˈtenən‧ˌtīt

plural -s

: a mineral (Cu,Fe)₁₂As₄S₁₃ that consists of a blackish lead-gray sulfide of iron, copper, arsenic, and sulfur and is isomorphous with tetrahedrite

Word History

Etymology

Smithson Tennant †1815 English chemist + English -ite

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