Mid-infrared spectral behavior of sedimentary rocks

Mid-infrared (6- to 40-micrometer) spectra of sedimentary rocks and rock-forming minerals are presented. Molecular vibration bands are identified and the causes of spectral scatter among different samples of the same rock type are determined. It is concluded that mid-infrared spectra of sedimentary rocks are an excellent guide to their major mineral content. The chief drawback for terrestrial remote sensing of these rocks is that the major carbonate absorption band lies outside the atmospheric window. (Author)