[S-VC41] Crystal clear: petrological reconstructions of magmatic processes and histories

[SVC41-P06] Formation conditions of silica polymorphs during the Vulcanian eruptions of Asama volcano in 2004

*Yusuke Naito¹, Auer Andreas¹, Hiroshi Kitagawa², Katsura Kobayashi² (1. Department of Earth Science, Shimane University, , 2. Institute for Planetary Materials, Okayama University)