kermesite

noun

ker·​mes·​ite

ˈkərmēˌzīt,

-mə̇ˌsīt;

kərˈmeˌsīt

plural -s

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

Word History

Etymology

French kermésite, from kermès + -ite

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