Complete mineralogical data for OWYHEEITE. Chemical Formula: Pb10Ag3Sb11S28. Crystal System: Monoclinic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for OXAMMITE. Chemical Formula: (NH4)2[C2O4]·H2O. Crystal System: Orthorhombic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for OXO-MAGNESIO-HASTINGSITE. Chemical Formula: NaCa2(Mg2Fe3+3)[Si6Al2O22]O2. Crystal System: Monoclinic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for OSMIUM. Chemical Formula: Os. Crystal System: Hexagonal. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for OSUMILITE. Chemical Formula: KFe2+2Al3[Al2Si10O30]. Crystal System: Hexagonal. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for OSUMILITE-(Mg). Chemical Formula: KMg2Al3[Al2Si10O30]. Crystal System: Hexagonal. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for OSWALDPEETERSITE. Chemical Formula: (UO2)2(CO3)(OH)2·4H2O. Crystal System: Monoclinic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for OTAVITE. Chemical Formula: Cd(CO3). Crystal System: Hexagonal-Trigonal. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for OTJISUMEITE. Chemical Formula: PbGe(Ge3O9). Crystal System: Triclinic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for OTTEMANNITE. Chemical Formula: Sn2S3. Crystal System: Orthorhombic. Learn about its geologic occurrence, habit, and identification.