riebeckite

noun

rie·​beck·​ite

ˈrēˌbeˌkīt

plural -s

: a black monoclinic amphibole Na₂Fe₅Si₈O₂₂(OH)₂ containing much iron and sodium

Word History

Etymology

German riebeckit, from Emil Riebeck †1885 German explorer + German -it -ite

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