ettringite

noun

et·​tring·​ite

ˈe‧triŋˌīt

plural -s

: a mineral Ca₆Al₂(SO₄)₃(OH)₁₂.26H₂O consisting of hydrous basic sulfate of calcium and aluminum

Word History

Etymology

German ettringit, from Ettringen, Rhine Province, Germany, its locality + German -it -ite

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