Glauconite
Fujikoto
Fujisato city, Yamamoto county, Akita pref., Japan
Source for K
Field of view: 50 mm. Glauconite in sandstone. The grayish-green matrix of sandstone is composed of glauconite.
Recovered from sandstone formed on the surface of an andesitic submarine volcano at a back-arc basin in a reductive shallow marine environment of low sedimentation rate. Formed in the late Miocene (7.0 Ma).
Glauconite from this location was described in 1944.
Other localities
- Fujisato (Sandstone, Matrix)
- Kuzubukuro (Sandstone, Matrix)