Complete mineralogical data for POTASSIC-FERRO-FERRI-SADANAGAITE. Chemical Formula: KCa2(Fe2+3Fe3+2)[Si5Al3O22](OH)2. Crystal System: Monoclinic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for POLLONEITE. Chemical Formula: Pb46AgAs26Sb23S120. Crystal System: Monoclinic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for POLYAKOVITE-(Ce). Chemical Formula: (Ce,Ca)4MgCr2(Ti,Nb)2[Si2O7]2O8. Crystal System: Monoclinic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for Polyarsite. Chemical Formula: Na7CaMgCu2(AsO4)4F2Cl. Crystal System: Monoclinic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for POLYBASITE. Chemical Formula: Ag9(Ag,Cu)6Cu(Sb,As)2S11. Crystal System: Monoclinic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for POLYDYMITE. Chemical Formula: Ni2+Ni3+2S4. Crystal System: Isometric. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for POLYHALITE. Chemical Formula: K2Ca2Mg(SO4)4(H2O)2. Crystal System: Triclinic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for POLYPHITE. Chemical Formula: Na6(Na4Ca2)2Na2Ti2Na2Ti2[Si2O7]2(PO4)6O4F4. Crystal System: Triclinic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for POMITE. Chemical Formula: Ca3[V4+5V5+10O37](CO3)·37H2O. Crystal System: Triclinic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for PONOMAREVITE. Chemical Formula: K4Cu4Cl10O. Crystal System: Monoclinic. Learn about its geologic occurrence, habit, and identification.