920-1192, Japan Department of Earth Sciences, Kumamoto University, Kumamoto 860-8555, Japan; s_ishimaru@kumamoto-u...Building 7, 4-19-9 Taito, Taito-ku, Tokyo 110-0016, Japan; makomiu1214@gmail.com Department of Ocean Floor...Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8564, Japan; akizawa@aori.u-tokyo.ac.jp Department of Earth...Sciences, Kanazawa University, Kanazawa 920-1192, Japan; peridot@staff.kanazawa-u.ac.jp Correspondence:...serpentinized dunite from Fujiwara, the Sanbagawa metamorphic belt of high-pressure intermediate type, Japan. The |