Galena
Otaki, Chichibu city, Saitama pref., Japan
Source for Lead
Field of view: 20 mm. Galena in an open space of rhodochrosite. The two dodecahedral dark gray crystals are galena. The surrounding pinkish-white host is rhodochrosite. The surface of galena crystals is covered with an unspecified very fine sulfide mineral.
Recovered from a moderately low-temperature hydrothermal deposit combined with skarn formed by contact metamorphism of I-type (magnetite-series) quartz diorite. Formed in the late Miocene (6 Ma).
Galena from this location was described in 1930.
Other localities
- Kamioka Mine (Pneumatolytic Skarn, Bedded)
- Chichibu Mine (Hydrothermal Skarn, Granular)
- Kisan-mori Mine (Hydrothermal, Bedded)
- Mikawa Mine (Hydrothermal, Massive)
- Sayama Mine (Hydrothermal, Massive)
- Suzukura Mine (Hydrothermal, Massive)
- Yunosawa Mine (Hydrothermal, Granular)
- Hikida Mine (Hydrothermal, Granular)
- Takanosu Mine (Mn Skarn, Granular)