Sphalerite
Kami-Ono, Ono city, Fukui pref., Japan
Source for Zinc, Cadmium, and Sulfuric acid.
Field of view: 100 mm. A sphalerite ore. The ore is composed of massive black sphalerite exhibiting perfect cleavage. The yellow grain with a metallic luster at the center is pyrite.
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).
Sphalerite from this location was described in 1895.
Other localities
- Kamioka Mine (Pneumatolytic Skarn, Granular)
- Chichibu Mine (Hydrothermal Skarn, Twin)
- Nakatatsu Mine (Hydrothermal Skarn)
- Kawai Mine (Hydrothermal Skarn, Massive)
- Hagidaira Mine (Mn Skarn, Granular)
- Arakawa Mine (Hydrothermal, Transparent)
- Kawazu Mine (Hydrothermal, Granular)
- Mikawa Mine (Hydrothermal, Granular)
- Sayama Mine (Hydrothermal, Veinlet)
- Manju Mine (Hydrothermal, Massive)
- Hikida Mine (Hydrothermal, Granular)
- Agenosawa Mine (Hydrothermal, Massive)