Daikokuten
Daikokuten, Zao city, Katta county, Miyagi pref., Japan
Occurrence
Crystal lapilli of augite associated with basaltic andesite erupted from the Umanose Caldera of Zao Volcano in the Late Pleistocene (30 ka). Zao Volcano is an active volcano, and has been active since the early Pleistocene (1 Ma). The age of eruption was determined by radiocarbon dating.
Augite crystal lapilli erupted from the Umanose caldera. Black prisms are augite. The brown to reddish-brown lapilli are basaltic andesite.
Reported Minerals
- Augite
Mineral Assemblages
- Andesite(Host) - Augite
Localities
- Shishiiwa (Volcanic tuff)
- Goroku (Volcanic tuff)
- Mount Haruna (Pumice)
- Iwo Jima (Crystal lapilli)
- Daikokuten (Crystal lapilli)