berthierite

noun

ber·​thi·​er·​ite

ˈbər-thē-ə-ˌrīt

plural -s

: a mineral FeSb₂S₄ consisting of a sulfide of antimony and iron of a dark steel-gray color (specific gravity 4.0)

Word History

Etymology

French berthierite, after Pierre Berthier †1861 French chemist + French -ite

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