Chabazite
Hirukawa
Nakatsugawa city, Gifu pref., Japan
This locality is closed to collectors.
Field of view: 40 mm. Reddish-brown chabazite. The rhombohedral reddish-brown crystals are chabazite. The reddish-brown color is due to Fe replacing Ca. The surrounding opaque white parts are orthoclase, and the translucent gray parts are quartz.
Recovered from a pocket of a Topaz-NYF pegmatite associated with S-type (Ilmenite-series) granite. Formed in the Late Cretaceous (67 Ma).
Chabazite from this location was described in 1938.
Other localities
- Hirukawa (Pegmatite, Fe-bearing)
- Kanayamadani valley (Serpentinite, Rhombohedral)
- Obora path (Hyaloclastite, Rhombohedral)
- Sogaura (Hyaloclastite, Rhombohedral)
- Yoshimi (GS facies, Rhombohedral)