Stilbite
Akiyama, Uenohara city, Yamanashi pref., Japan
Field of view: 20 mm. A group of stilbite. The transparent prisms with a vitreous luster are stilbite. The opaque grayish-white part at the right is the host andesitic tuff.
Recovered from an open space of a stilbite vein in andesitic tuff subjected to Zeolite facies contact metamorphism. Formed in the late Miocene (7 Ma).
Stilbite from this location was described in 2008.
Other localities
- Kami-Sano (Sandstone, Tabular)
- Obora Path (Hyaloclastite, Tabular)
- Sogaura (Hyaloclastite, Tabular)
- Kusama Mine (Pyroclastics, Zeolite facies)
- Oshima Quarry (Basalt, Zeolite facies)
- Kaneyama (Tuff, Zeolite facies)