Images Formulae: The organovaite group has members: organovaite-(Mn): K2MnNb4(Si4O12)2O4.5-7H2O organovaite-(Zn): K2Zn(Nb,Ti)4(Si4O12)2(O,OH)4.6H2O They are cyclosilicates (ring silicates) Back to Minerals