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Wollastonite

Chichibu Mine

Otaki, Chichibu city, Saitama pref., Japan

Wollastonite

Field of view: 20 mm. Wollastonite associated with axinite-(Fe). The radial groups of white prisms are wollastonite. The surrounding massive pale purple parts are axinite-(Fe).

Recovered from skarn formed by contact metamorphism of I-type (Magnetite-series) quartz diorite. Formed in the late Miocene (6 Ma).

Wollastonite from this location was described in 1957.

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