meionite

noun
mei·​o·​nite | \ ˈmīəˌnīt\
plural -s

Definition of meionite

: a mineral Ca4Al6Si6O24(SO4,CO3,Cl2) consisting of an aluminosilicate of calcium with other anions (as sulfate, carbonate, and chloride) and being isomorphous with marialite — see scapolite

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History and Etymology for meionite

French méionite, from Greek meiōn less + French -ite

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