Complete mineralogical data for FERRICOPIAPITE. Chemical Formula: Fe3+0.67Fe3+4(SO4)6(OH)2(H2O)10·10H2O. Crystal System: Triclinic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for FERRICORONADITE. Chemical Formula: Pb(Mn4+6Fe3+2)O16. Crystal System: Tetragonal. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for FERRIERITE-K. Chemical Formula: (K,Na)5[Si31Al5O72]·18H2O. Crystal System: Orthorhombic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for FERRIERITE-Mg. Chemical Formula: (K,Na)2Ca0.5Mg2[Si29Al7O72]·18H2O. Crystal System: Orthorhombic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for FERRIERITE-Na. Chemical Formula: (Na,K)5[Si31Al5O72]·18H2O. Crystal System: Monoclinic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for FERRIERITE-NH4. Chemical Formula: (NH4,Mg0.5)5[Si31Al5O72]·22H2O. Crystal System: Orthorhombic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for FERRI-FLUORO-KATOPHORITE. Chemical Formula: Na(NaCa)(Mg4Fe3+)[Si7AlO22]F2. Crystal System: Monoclinic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for FERRI-FLUORO-LEAKEITE. Chemical Formula: NaNa2(Mg2Fe3+2Li)[Si8O22]F2. Crystal System: Monoclinic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for FERRI-GHOSEITE. Chemical Formula: □(NaMn2+)(Mg4Fe3+)[Si8O22](OH)2. Crystal System: Monoclinic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for FERCHROMIDE. Chemical Formula: Cr(Cr0.5Fe0.2□0.3). Crystal System: Isometric. Learn about its geologic occurrence, habit, and identification.