Complete mineralogical data for ALLOCHALCOSELITE. Chemical Formula: PbCu1+Cu2+5(Se4+O3)2O2Cl5. Crystal System: Monoclinic. Learn about its geologic occurrence, habit, and identification.

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

Complete mineralogical data for ALLOPHANE. Chemical Formula: Al2[SiO2]1.3-2.0O3·2.5-3.0H2O. Crystal System: Amorphous. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for ALLORIITE. Chemical Formula: (Na,K,Ca)24(Na,Ca)4Ca4[(Si,Al)48O96](SO4)4(SO3,CO3)2(OH,Cl)2(H2O,OH)4. Crystal System: Hexagonal-Trigonal. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for ALLUAIVITE. Chemical Formula: Na19(Ca,Mn)6(Ti,Nb)3Si2[Si3O9]2[Si9O27]2O2Cl(H2O)2. Crystal System: Hexagonal-Trigonal. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for ALLUAUDITE. Chemical Formula: □NaMn2+Fe3+2(PO4)3. Crystal System: Monoclinic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for ALMANDINE. Chemical Formula: Fe2+3Al2[SiO4]3. Crystal System: Isometric. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for ALMARUDITE. Chemical Formula: K(□,Na)2(Mn,Fe,Mg)2(Be,Al)3[Si12O30]. Crystal System: Hexagonal. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for ALMEIDAITE. Chemical Formula: PbZn2(Mn,Y)(Ti,Fe3+)18O36(O,OH)2. Crystal System: Hexagonal-Trigonal. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for ALNAPERBØEITE-(Ce). Chemical Formula: (CaCe2.5Na0.5)Al4[Si2O7][SiO4]3O(OH)2. Crystal System: Monoclinic. Learn about its geologic occurrence, habit, and identification.