TrekGEO > Mineral Trail > Kanto region > Gunma pref. > Wairakite

Japanese page


Dohira River

Minami-Nomaki, Shimonita city, Kanra county, Gunma pref., Japan


Field of view: 20 mm. Wairakite associated with calcite. The group of opaque white trapezohedral crystals are wairakite. The translucent white parts at the top is calcite filling interstices of wairakite. The grayish-green host at the left is andesite.

Recovered from a calcite vein in an andesitic dike intruded in andesitic tuff breccia filling a caldera. Formed in the late Miocene (6 Ma).

Other localities

Copyright (c) 2017 NariNari, All Rights Reserved.