Hedenbergite
Kami-Ono, Ono city, Fukui pref., Japan
Field of view: 50 mm. A group of hedenbergite. The coarse grayish-green prisms are hedenbergite. The black grains with a metallic luster at the right end and at the upper right are sphalerite.
Recovered from a moderate-temperature hydrothermal deposit combined with skarn formed by contact metamorphism of I-type (magnetite-series) quartz porphyry. Formed in the Late Cretaceous (66 Ma).
Hedenbergite from this location was described in 1952.
Other localities
- Chichibu Mine (Hydrothermal Skarn, Prismatic)
- Kobushi Mine (Hydrothermal Skarn, Prismatic)
- Nakatatsu Mine (Hydrothermal Skarn, Thick prismatic)
- Akatani Mine (Metasomatic Skarn, Thick prismatic)
- Waga-Sennin Mine (Metasomatic Skarn, Prismatic)
- Kamioka Mine (Pneumatolytic Skarn, Prismatic)
- Naganobori Mine (Pneumatolytic Skarn, Prismatic)