Zunyite
Kaize, Sakuho city, Minami-Saku county, Nagano pref., Japan
Field of view: 10 mm. Zunyite associated with pyrite. The pale brown tetrahedral crystals are zunyite. The fine pale yellow grains at the bottom are pyrite.
Recovered from an open space of a quartz vein in a hydrothermal deposit associated with pyrophyllitization hydrothermal alteration. Formed in the late Miocene (11 Ma).
Zunyite from this location was described in 1994.
Other localities
- Hongo Mine (Hydrothermal, Tetrahedral)
- Mount Kawate (Hydrothermal, Tetrahedral)