Complete mineralogical data for FERRISTRUNZITE. Chemical Formula: Fe3+Fe3+2(PO4)2(OH)3·5H2O. Crystal System: Triclinic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for FERRISURITE. Chemical Formula: Pb2.4Fe3+2[Si4O10](CO3)1.7(OH)3(H2O). Crystal System: Monoclinic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for Ferrisymplesite. Chemical Formula: Fe3+3(AsO4)2(OH)3·5H2O. Crystal System: Amorphous. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for FERRI-TARAMITE. Chemical Formula: Na(NaCa)(Mg3Fe3+2)[Si6Al2O22](OH)2. Crystal System: Monoclinic. 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.