TrekGEO > Mineral Trail > Kanto region > Saitama pref. > Vesuvianite

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Vesuvianite

Chichibu Mine

Otaki, Chichibu city, Saitama pref., Japan

Vesuvianite

Field of view: 50 mm. A group of vesuvianite. The pyramidal grayish-brown crystals are vesuvianite. These crystal has no prismatic face parallel to the C-axis.

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

Vesuvianite from this location was described in 1930.

Vesuvianite

Field of view: 10 mm. Prismatic vesuvianite. The grayish-brown prisms with a vitreous luster are vesuvianite. These crystals are elongated along the C-axis of the crystal.

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