caledonite

noun

cal·​e·​do·​nite

ˌkaləˈdōˌnīt

plural -s

: a mineral Cu₂Pb₅(SO₄)₃(CO₃)(HO)₆ consisting of basic copper lead sulfate occurring in minute green crystals

Word History

Etymology

French calédonite, from Latin Caledonia Scotland, its locality + French -ite

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