brochantite

noun

bro·​chant·​ite

brōˈshänˌtīt

plural -s

: a mineral Cu₄SO₄(OH)₆ consisting of a basic copper sulfate occurring in emerald-green orthorhombic crystals or massive (hardness 3.5–4, specific gravity 3.91)

Word History

Etymology

A. J. F. M. Brochant de Villiers †1840 French geologist + English -ite

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