Fluorite
Hiraiwa Mine
Kaminoho, Seki city, Gifu pref., Japan
This locality is closed to collecting.
Size of the crystal: 10 mm. An euhedral crystal of fluorite. The dodecahedral transparent pale green crystal is fluorite. The surrounding white host is gangue quartz.
Recovered from a quartz vein associated with granite porphyry, a part of a parallel dike swarm formed at the last stage of a caldera complex intruded in an accretionary complex. Formed in the middle Paleocene (60 Ma).
Fluorite from this location was described in 1950.
Other localities
- Hirukawa (Pegmatite, Octahedral)
- Hiraiwa Mine (Hydrothermal, Dodecahedral)
- Goka Mine (Hydrothermal, Massive)
- Takatori Mine (Pneumatolytic, Massive)
- Takane Mine (Pneumatolytic, Massive)
- Kamioka Mine (Pneumatolytic Skarn, Cubic)