四国中央部三波川帯猿田川地域の石英片岩中に産する含Mnウインチ閃石

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タイトル別名
  • Manganoan winchite in a quartz schist from the Saruta-gawa area in the Sanbagawa metamorphic terrain, central Shikoku, Japan.
  • Manganoan winchite in a quartz schist f

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抄録

Manganoan winchite (up to 4.19 wt.% MnO) occurs as cores of zoned amphibole in a quartz schist from the Saruta-gawa area in the Sanbagawa metamorphic terrain, central Shikoku, Japan. The quartz schist consists of quartz, albite, amphibole, muscovite, garnet, chlorite, allanite, calcite, apatite, stilpnomelane, tourmaline, hematite and pyrite. The amphibole is euhedral to subhedral in form (up to 700 μm long). The core of the amphibole ranges in composition from barroisite through winchite to manganoan winchite. The amphibole is rimmed by alkali amphibole (mainly magnesioriebeckite) and winchite. Garnet in the quartz schist is rich in spessartine component (59-79%).

収録刊行物

  • 岩鉱

    岩鉱 92 (5), 189-194, 1997

    一般社団法人 日本鉱物科学会

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