kermesite

noun
ker·​mes·​ite | \ ˈkərmēˌzīt, -mə̇ˌsīt; kərˈmeˌsīt\
plural -s

Definition of kermesite

: a mineral Sb2S2O consisting of antimony oxysulfide occurring usually as tufts of cherry-red capillary crystals and resulting from the alteration of stibnite

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History and Etymology for kermesite

French kermésite, from kermès + -ite

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