Presentation Information
[R1P-10]Mineralogy of garnet from Mt. Kutsuna, Matsuyama, Ehime Prefecture
*Shota Oshima1, Yohei Shirose2 (1. Ehime Kensetsu Consultants Co.,Ltd, 2. Grad. Sch., Ehime Univ)
Keywords:
garnet,Mt. Kutsuna,almandine,spessartine,garnet-biotite geothermometer
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Garnet from the west coast of Mt. Kutsuna, Kitayoshida-cho, Matsuyama, Ehime Prefecture shows various properties such as color, grain-size, and shape. We describe the geology of Mt. Kutsuna and mineralogical properties of the garnet. The mineral species of garnet were almandine and spessartine bearing minor Mg, and Ca. Core-rim textures with inclusion were also observed. The metamorphic temperatures of the hornfels were estimated at 510 to 620 ℃ by garnet-biotite geothermometry.
Garnet from the west coast of Mt. Kutsuna, Kitayoshida-cho, Matsuyama, Ehime Prefecture shows various properties such as color, grain-size, and shape. We describe the geology of Mt. Kutsuna and mineralogical properties of the garnet. The mineral species of garnet were almandine and spessartine bearing minor Mg, and Ca. Core-rim textures with inclusion were also observed. The metamorphic temperatures of the hornfels were estimated at 510 to 620 ℃ by garnet-biotite geothermometry.