Topaz
Suzugouya, Shirosato city, Higashi-ibaraki county, Ibaraki pref., Japan
Field of view: 10 mm. A crystal of topaz. The quadrangular white prism with large pyramidal faces is topaz. The basement at the bottom is gangue quartz encrusted with pale brown dirt.
Recovered from an open space of a quartz vein in a pneumatolytic deposit formed by S-type (Ilmenite-series) granite. Formed in the early Paleocene (65 Ma).
Topaz from this location was described in 1912.
Other localities
- Takatori Mine (Pneumatolytic, Prismatic)
- Ichiyanagi Mine (Pneumatolytic, veinlet)
- Mount Yagen (Pneumatolytic, veinlet)
- Hirukawa (Pegmatite, Prismatic)
- Mount Tanakami (Pegmatite, Prismatic)