Oxygen barometry of basaltic glasses based on vanadium valence determinations using synchrotron microXANES
- UNM
We describe here a new, non-destructive method for valence determinations of vanadium and oxygen fugacity estimates for basaltic glasses with spatial resolution of a few micrometers using synchrotron x-ray absorption near edge structure (XANES) spectroscopy. A promising proxy for oxygen fugacity is the valence of vanadium because it a large number of valence states in nature (2+, 3+, 4+ and 5+) and is ubiquitous in earth and planetary materials . We describe here a new, non-destructive method for valence determinations of vanadium and oxygen fugacity estimates for basaltic glasses with spatial resolution of a few micrometers using synchrotron x-ray absorption near edge structure (XANES) spectroscopy. Details of this method and applications to martian, lunar and terrestrial glasses are described and also in accompanying abstracts.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 1008910
- Resource Relation:
- Conference: Lunar and Planetary Science XXXV;March 15-19, 2004;Houston, Texas
- Country of Publication:
- United States
- Language:
- ENGLISH
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