chalcosiderite

noun

chal·​co·​sid·​er·​ite

¦kal(ˌ)kōˈsidəˌrīt

plural -s

: a mineral Cu(Fe, Al)₆(PO₄)₄(OH)₈.4H₂O consisting of a hydrous basic green phosphate of copper, iron, and aluminum, closely related to turquoise, and containing more aluminum than iron

Word History

Etymology

German chalkosiderit from chalk- chalc- + sider- + -it -ite

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