TrekGEO > Mineral Trail > Tohoku region > Fukushima pref. > Mangano-cummingtonite

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Gozaisho Mine

Odaira, Tono village, Iwaki city, Fukushima pref., Japan


Field of view: 5 mm. Amphibole associated with rhodonite. The acicular white to pale yellowish-brown crystals are amphibole, probably mangano-cummingtonite. The transparent parts with a vitreous luster are quartz, and the red parts are rhodonite.

Recovered from a bedded manganese deposit subjected to Epidote-Amphibolite facies regional metamorphism and contact metamorphism by granite.

Manganocummingtonite from this location was described in 1979.

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