CRISM TYPE SPECTRA CLASSES

Iron oxides and primary silicates
------->  Hematite
------->  Mg-Olivine
------->  Fe-Olivine
------->  Plagioclase
------->  Low-Ca Pyroxene
------->  High-Ca Pyroxene

Ices
------->  H2O Ice
------->  CO2 Ice

Sulfates
------->  Monohydrated sulfate
------->  Alunite
------->  Hydroxylated Fe-sulfate
------->  Jarosite
------->  Polyhydrated sulfate
------->  Gypsum
------->  Bassanite

Phyllosilicates
------->  Kaolinite
------->  Al-Smectite
------->  Margarite
------->  Illite/Muscovite
------->  Fe-Smectite
------->  Mg-Smectite
------->  Talc
------->  Serpentine
------->  Chlorite

Carbonates
------->  Mg-Carbonate
------->  Ca/Fe-Carbonate

Other hydrated silicates and halides
------->  Hydrated Silica
------->  Epidote
------->  Analcime
------->  Chloride
------->  Prehnite