Identifiable minerals resulting from surface reflection of electromagnetic waves | Spectral area |
Jural iron-oxide minerals: Hematite, Geothite | Infrared of about (1 - 35 μ) |
Hydoxyl minerals: Clays, Talc, Pyrophilite Calcite, Dolemite, Chlorite, Kaoline | Infrared with short wave length (1 - 2.5 μ) |
Silicated, Carbonized | Thermal infrared (8 - 14 μ) |