prosopite

noun

pros·​o·​pite

ˈpräsəˌpīt

plural -s

: a mineral CaAl₂(F,OH)₈ consisting of a basic fluoride of calcium and aluminum

Word History

Etymology

German prosopit, from prosop- (from Greek prosōpeion mask, from prosōpon face) + -it -ite; from its occurrence as a pseudomorph

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