Infrared Mapping of H2O and CO2 in Volcanic Minerals

FTIR mapping of leucite and hauyne were performed by IR micro-spectroscopy at the SINBAD beamline at Frascati. Leucite showed water to be zoned with virtually anhydrous cores and water rich-rims. In hauyne we observed intense absorptions due to H₂O and molecular CO₂ with variable H₂O/CO₂. Analysis of volatile traces of H₂O and CO₂ in volcanic minerals provides significant constraints on the genesis and evolution of magmatic systems.