apjohnite

noun

ap·​john·​ite

ˈapˌjäˌnīt

plural -s

: a mineral MnSO₄·Al₂(SO₄)₃·22H₂O consisting of manganese aluminum sulfate containing water and occurring in crusts or fibrous masses

Word History

Etymology

German apjohnit, from James Apjohn †1886 Irish chemist who first examined it + German -it -ite

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