Schorl
Mount Atago
Akanuma, Nakata city, Koriyama county, Fukushima pref., Japan
This locality was closed to collecting.
Field of view: 200 mm. A group of schorl. The columnar group of black prisms is schorl. The platy silver-white crystals on schorl are muscovite.
Recovered from pegmatite associated with S-type (ilmenite-series) granite intruded in peridotite and greenschist, the upper part of an oceanic arc subjected to Greenschist facies medium-pressure metamorphism. Formed in the Late Cretaceous (100 Ma).
Schorl from this location was described in 1974.
Other localities
- Taguchi Mine (Pegmatite, Prismatic)
- Asemi river (GS facies, Radial)
- Yukiiri (Pegmatite, Prismatic)
- Hanazono Mine (Pegmatite, Prismatic)
- Mount Atago (Pegmatite, Columnar)
- Chichibu Mine (Aplite, Prismatic)