Tsugaruite
Ikarigaseki, Hirakawa city, Aomori pref., Japan
This locality is closed to collectors.
Field of view: 5 mm. Tsugaruite associated with jordanite. The radial groups of dark gray fibers are tsugaruite. The botryoidal white group at the upper right is jordanite encrusted with white clay.
Recovered from an open space of a sulfide vein in a moderate-temperature hydrothermal deposit associated with rhyolitic welded tuff in a caldera complex. Formed in the late Pliocene (3.5 Ma).
The first tsugaruite in the world was described from this location in 1998.