Complete mineralogical data for PORTLANDITE. Chemical Formula: Ca(OH)2. Crystal System: Hexagonal-Trigonal. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for POŠEPNÝITE. Chemical Formula: (Cu+3+x□3-x)(Hg2+4-xCu+2+x)Sb4(Se12.5□0.5) (0

Complete mineralogical data for POSNJAKITE. Chemical Formula: Cu4(SO4)(OH)6(H2O). Crystal System: Monoclinic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for POSTITE. Chemical Formula: MgAl2(V10O28)(OH)2(H2O)14·13H2O. Crystal System: Orthorhombic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for POTARITE. Chemical Formula: PdHg. Crystal System: Tetragonal. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for POTASSIC-ARFVEDSONITE. Chemical Formula: KNa2(Fe2+4Fe3+)[Si8O22](OH)2. Crystal System: Monoclinic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for POTASSICCARPHOLITE. Chemical Formula: K(Mn2+,Li)2Al4[Si2O6]2(OH,F)8. Crystal System: Orthorhombic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for POTASSIC-CHLORO-HASTINGSITE. Chemical Formula: KCa2(Fe2+4Fe3+)[Si6Al2O22]Cl2. Crystal System: Monoclinic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for POTASSIC-CHLORO-PARGASITE. Chemical Formula: KCa2(Mg4Al)[Si6Al2O22]Cl2. Crystal System: Monoclinic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for POTASSIC-FERRI-LEAKEITE. Chemical Formula: KNa2Mg2(Fe3+2Li)[Si8O22](OH)2. Crystal System: Monoclinic. Learn about its geologic occurrence, habit, and identification.