Abstract
This chapter describes the extraction of water from rock samples and also mentions stepped heating methods. Laser system – Kyser (1995) reported the use of a neodymium-doped yttrium aluminium garnet laser for determination of isotopic compositions in rock samples. H2 released during lasing (usually 10–20% of the released H2O) was converted into H2O over hot CuO. All H2O was collected cryogenically and converted into H2 gas for isotopic measurement. Phlogopite, biotite, amphibole, muscovite, serpentine and kaolinite were analyzed in situ in polished thin sections, and H2O from carnallite and fluid inclusions in halite were extracted with this system. Franchi described a laser system for the release of small quantities of gases from solid rocks and combustion of carbonate material into CO2. The H2O was separated from the other noncondensable and condensable gases by cryogenic methods. The principles of stepped heating of rock or mineral samples, and interpretation methods of results. Stepped heating technique can be applied at fine size meteoritic material in an atmosphere of O2 with release of CO2.
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