diadochite

noun

di·​ad·​o·​chite

dīˈadəˌkīt

plural -s

: a mineral Fe₂(PO₄)(SO₄)(OH).5H₂O consisting of a basic hydrous ferric phosphate and sulfate that is brown or yellowish in color

Word History

Etymology

German diadochit, from Greek diadochos succeeding, relieving (from diadechesthai to succeed, relieve, from dia- + dechesthai to take, receive) + German -it -ite; akin to Latin decēre to be fitting, proper

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