2019 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)

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Oral presentation

R1: Characterization and description of minerals

Sun. Sep 22, 2019 9:45 AM - 12:00 PM Lecture Ia (Lecture)

Chairperson:Masanori Kurosawa, Koichi Momma, Toshiro Nagase

11:30 AM - 11:45 AM

[R1-08] Two types of fine structure in the infrared OH-stretching bands of gedrite-group amphiboles

*Kiyotaka Ishida1, Frank C. Hawthorne (1. Non)

Keywords:gedrite, OH-stretching band, fine structure

Below about 3690 cm-1, two types of fine structure in the OH-stretching bands with vacant A-site occur due to the two types of configurations of SiSi and SiAl at adjacent T1T1 tetrahedra.