prosopite

noun
pros·​o·​pite | \ ˈpräsəˌpīt\
plural -s

Definition of prosopite

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

History and Etymology for prosopite

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

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