Abstracts for Annual Meeting of Japan Association of Mineralogical Sciences
2016 Annual Meeting of Japan Association of Mineralogical Sciences
Session ID : R3-06
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R3: High-pressure science and deep Earth's material
Structural behaviour of hydrogarnet, katoite Ca3Al2(O4H4)3, under high pressure and high temperature
Masato Kato*Atsushi KyonoAsami Sano-FurukawaShinichi MachidaTakanori Hattori
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CONFERENCE PROCEEDINGS FREE ACCESS

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Abstract

Hydrogarnet, katoite, was investigated with HP single-crystal XRD and HP and HT neutron diffraction analyses. Consequently, with the phase transformation, the space group of katoite is changed from Ia-3d to I-43d at about 5 GPa. in addition, katoite is decomposed into corundum and portlandite at 8 GPa and 900 oC.

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© 2016 Japan Association of Mineralogical Sciences
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