Brookite
Enzan-Hirasawa, Koshu city, Yamanashi pref., Japan
This locality is closed to collecting.
Source for Titanium
Field of view: 3 mm. Brookite perched on adularia. The tabular reddish-brown crystal is brookite. The white basement is rhombohedral adularia.
Recovered from a titanium type rare-element pegmatite in a S-type (Ilmenite-series) margin of I-type (Magnetite-series) granite formed by the reduction reaction of granite magma with pelitic rocks Formed in the late Miocene (10 Ma),
Other localities
- Hirasawa (Alpine Fissure, Platy)
- Takemori (Alpine Fissure, Platy)