frondelite

noun

fron·​del·​ite

fränˈdeˌlīt

plural -s

: a mineral MnFe₄(PO₄)₃(OH)₅ consisting of a basic phosphate of manganese and iron and isomorphous with rockbridgeite

Word History

Etymology

Clifford Frondel, born 1907 American mineralogist + English -ite

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