French Romanèchite Cited by user Shloren on 25 Nov 2023 La romanèchite est un minéral de formule chimique (Ba,)2(Mn4+,Mn3+)5O10 et principal constituant du psilomélane, qui est un mélange de minéraux.
English Romanèchite Cited by user Carmichaelsk on 12 Mar 2021 Romanèchite ((Ba,H2O)2(Mn+4,Mn+3)5O10) is the primary constituent of psilomelane, which is a mixture of minerals.