arseniosiderite

noun

ar·​se·​ni·​o·​sid·​er·​ite

-ˈsidəˌrīt

plural -s

: a mineral Ca₃Fe₄(AsO₄)₄(OH)₄·₄H₂O consisting of a basic iron calcium arsenate occurring as yellowish brown concretions

Word History

Etymology

French arsénio-sidérite, from arsénio- + sidérite siderite, from German siderit

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