Abstracts for Annual Meeting of Japan Association of Mineralogical Sciences
2013 Annual Meeting of Japan Association of Mineralogical Sciences
Session ID : R3-03
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R3: High-pressure science and deep Earth's material
Experimental constraints on P-T-t conditions for the formation of metastable seifertite
*Tomoaki KuboTakumi KatoYuji HigoKen-ichi Funakoshi
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Abstract
We have carried out high-pressure and high-temperature in-situ XRD experiments of quartz and cristobalite using a Kawai-type apparatus (SPEED-1500) at BL04B1 of SPring-8. When using cristobalite, we observed formation of seifertite before appearance of stishovite when heating. The metastable field of seifertite can be kinetically defined, which expands to much lower pressures than previously thought. 
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© 2013 Japan Association of Mineralogical Sciences
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