cumengite

noun

cu·​men·​gite

variants or less commonly cumengeite

kyüˈmenˌjīt,

-ˌgīt

plural -s

: a mineral Pb₄Cu₄Cl₈(OH)₈.H₂O consisting of a basic lead-copper chloride occurring in deep blue tetragonal crystals

Word History

Etymology

German cumengit, from Édouard Cumenge †1902 French mining engineer + German -it -ite

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