Complete mineralogical data for CRONSTEDTITE. Chemical Formula: Fe2+2Fe3+[(Si,Fe3+)2O5](OH)4. Crystal System: Hexagonal-Trigonal. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for CRONUSITE. Chemical Formula: Ca0.2CrS2·2H2O. Crystal System: Hexagonal-Trigonal. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for CROOKESITE. Chemical Formula: TlCu7Se4. Crystal System: Tetragonal. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for CROWNINGSHIELDITE. Chemical Formula: (Ni0.9Fe0.1)S. Crystal System: Hexagonal. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for CRYOBOSTRYXITE. Chemical Formula: KZnCl3(H2O)2. Crystal System: Monoclinic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for CRYOLITE. Chemical Formula: Na2NaAlF6. Crystal System: Monoclinic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for CRYOLITHIONITE. Chemical Formula: Na3Li3Al2F12. Crystal System: Isometric. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for CRYPTOCHALCITE. Chemical Formula: K2Cu5(SO4)5O. Crystal System: Triclinic. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for CRYPTOHALITE. Chemical Formula: (NH4)2SiF6. Crystal System: Isometric. Learn about its geologic occurrence, habit, and identification.

Complete mineralogical data for CRYPTOMELANE. Chemical Formula: K(Mn4+7Mn3+)O16. Crystal System: Monoclinic. Learn about its geologic occurrence, habit, and identification.