TrekGEO > Mineral Trail > Koshinetsu region > Yamanashi pref. > Epidote

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Ashigawa village, Fuefuki city, Yamanashi pref., Japan


Field of view: 15 mm. Epidote formed from anothite. The grayish-green grains are epidote exhibiting perfect cleavage. The surrounding white host is composed of fine grains of quartz.

Recovered from tuff subjected to Albite-Epidote-hornfels facies contact metamorphism by I-type (Magnetite-series) quartz diorite. Formed in the middle Miocene (12 Ma).

Epidote from this location was described in 2008.

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