Mount Hokiya
Toyosaka, Matsushiro village, Nagano city, Nagano pref., Japan
Occurrence
Low-temperature zeolite facies metamorphic rocks
Phenocryst and zeolite in vesicules of Basalt of Pliocene Hokiyadake Volcanics.
Outcrop of basalt of Hokiyadake Volcanics. The white parts in this photograph are zeolite in vesicules of altered black basalt. Zeolite-bearing basalt ditributes as an altered brown vertical zone in the outcrop. The width of the zone is approximately 1.5 m.
Reported Minerals
- Dachiardite
- Mordenite
- Calcite
- Bytownite
Mineral Assemblages
- Dachiardite
- Mordenite
- Basalt(Host) - Bytownite
Localities
- Miyanohira (Chabazite)
- Mount Bandake (Lévyne)
- Mount Hokiya (Dachiardite)
Related Occurrences
- Albite-Epidote-hornfels facies
- Hornblende-hornfels facies
- Pyroxene-hornfels facies
- Sanidinite-hornfels facies