Complete mineralogical data for O’DANIELITE. Chemical Formula: Na□Zn3(AsO3OH)2(AsO4). Crystal System: Monoclinic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for ODIGITRIAITE. Chemical Formula: CsNa5Ca5[Si14O35][B2O3]F2. Crystal System: Monoclinic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for ODIKHINCHAITE. Chemical Formula: Na10Sr3Ca6Mn3Zr3NbSi[Si3O9]2[Si9O27]2O(OH)3 (CO3)(H2O)2·H2O. Crystal System: Hexagonal-Trigonal. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for ODINITE. Chemical Formula: (Fe3+,Mg,Al,Fe2+)5[(Si,Al)2O5]2(OH)8. Crystal System: Monoclinic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for ODINTSOVITE. Chemical Formula: K2Na4Ca3Ti2Be4[Si6O18]2O2. Crystal System: Orthorhombic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for OENITE. Chemical Formula: CoSbAs. Crystal System: Orthorhombic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for OFFRETITE. Chemical Formula: KCaMg[Si13Al5O36]·15H2O. Crystal System: Hexagonal. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for OFTEDALITE. Chemical Formula: K(ScCa)□2Be3[Si12O30]. Crystal System: Hexagonal. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for OGDENSBURGITE. Chemical Formula: Ca2ZnFe3+4(AsO4)4(OH)6·6H2O. Crystal System: Orthorhombic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for OBERTHÜRITE. Chemical Formula: Rh3Ni32S32. Crystal System: Isometric. Learn about its geologic occurrence, habit, and identification.