Abstract
Confocal micro-Raman spectroscopic measurements at high spatial resolution of about 5 μm 3 were performed to determine the CO 2 contents of natural cordierite. Nine cordierite single-crystals with known CO 2 concentrations, previously determined by colorimetric titration, were studied to obtain a calibration curve for this method. Measurements were also performed to quantify the CO 2 content of cordierite porphyroblasts in a thin section of a granulite-facies metapelite from Kosseldorf, Sauwald Area, Southern Bohemian Massif, Upper Austria. Fifteen points along a traverse through a large (560 μm) single crystal revealed low CO 2 contents of 0.14 ± 0.11 wt.% CO 2 . These results provide some constraints on the activity of CO 2 [a(CO 2 )] during granulite-facies metamorphism, only if fluid-saturated conditions prevailed or independent H 2 O measurements were made.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
