imerinite

noun

im·​er·​i·​nite

ˌiməˈrēˌnīt

plural -s

: a monoclinic amphibole Na₂(Mg,Fe)₆Si₈O₂₂(O,OH)₂ that is related to richterite and occurs in colorless to blue acicular crystals : a basic silicate of sodium, iron, and magnesium

Word History

Etymology

French imerinite, from Imerina, province of Madagascar, its locality + French -ite

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