TrekGEO > Mineral Trail > Kanto region > Tochigi pref. > Axinite-(Mn)

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Takanosu Mine

Kami-Kasuo, Kanuma city, Tochigi pref., Japan


Field of view: 30 mm. A group of axinite-(Mn). The tabular brown crystals are axinite-(Fe) forming an axinite-unique curved radial group.

Recovered from a chert-hosted bedded manganese deposit subjected to Hornblende-hornfels facies contact metamorphism by S-type (Ilmenite-series) granodiorite. Formed in the early Paleocene (64 Ma).

Axinite-(Mn) from this location was described in 1965.

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