noun psi·lo·mel·ane \ˌsīlōˈmeˌlān\

Definition of psilomelane



  1. :  a basic oxide of barium and bivalent and quadrivalent manganese probably BaMnMn8O16(OH)4 — compare hollandite, coronadite

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Origin and Etymology of psilomelane

psil- + -melane

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