Dravite?
Tanakami-Mori village, Otsu city, Shiga pref., Japan
Field of view: 5 mm. Tourmaline in a pocket of pegmatite. The acicular grayish-green crystals are tourmaline. It looks like dravite but is possibly foitite. The white basement is feldspar, and the brown spots are limonite.
Recovered from an REE Miarolitic pegmatite in S-type (Ilumenite-series) granite. Formed in the Late Cretaceous (70 Ma).
Tourmaline from this location was described in 1947.
Other localities
- Chichibu Mine (Skarn, Hairy)
- Takemori (Alpine Fissure, Prismatic)
- Mount Tanakami (Pegmatite, Acicular)