Stibnite
Akadani village, Fukui city, Fukui pref., Japan
Field of view: 3 mm. Prisms of stibnite. The black prisms with striations parallel to the prism elongation are stibnite. The transparent granular basement with a vitreous luster is fine crystals of gangue quartz.
Recovered from an open space of a quartz vein in a low-temperature hydrothermal deposit associated with rhyolite. Formed in the late Oligoene (25 Ma).
Stibnite from this location was described in 1900.
Other localities
- Akadani Mine (Hydrothermal, Prismatic)
- Nishinomaki Mine (Hydrothermal, Radial)
- Awashiro Mine (Sericitization, Prismatic)