Complete mineralogical data for AENIGMATITE. Chemical Formula: Na4(Fe2+10Ti2)[Si12O36]O4. Crystal System: Triclinic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for AERINITE. Chemical Formula: (Ca,Na)6(Fe3+,Fe2+,Mg,Al)4(Al,Mg)6[Si12O36](CO3)(OH)12(H2O)12. Crystal System: Hexagonal-Trigonal. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for AERUGITE. Chemical Formula: (Ni,□)9As(AsO4)2O8. Crystal System: Hexagonal-Trigonal. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for AESCHYNITE-(Ce). Chemical Formula: (Ce,Ca,Fe,Th)(Ti,Nb)2(O,OH)6. Crystal System: Orthorhombic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for AESCHYNITE-(Nd). Chemical Formula: (Nd,Ln,Ca)(Ti,Nb)2(O,OH)6. Crystal System: Orthorhombic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for AESCHYNITE-(Y). Chemical Formula: (Y,Ln,Ca,Th)(Ti,Nb)2(O,OH)6. Crystal System: Orthorhombic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for AFGHANITE. Chemical Formula: (Na,K)22Ca10[Si24Al24O96](SO4)6Cl6. Crystal System: Hexagonal-Trigonal. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for AFMITE. Chemical Formula: Al3(PO3OH)(PO4)(OH)4(H2O)3·H2O. Crystal System: Triclinic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for AFWILLITE. Chemical Formula: Ca3[SiO3OH)]2·2H2O. Crystal System: Monoclinic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for AGAITE. Chemical Formula: Pb3Cu2+(Te6+O5(OH)2)(CO3). Crystal System: Orthorhombic. Learn about its geologic occurrence, habit, and identification.