Hematite
Otaki, Chichibu city, Saitama pref., Japan
Source for Iron
Field of view: 50 mm. A group of hematite. The platy black crystals with a metallic luster are hematite. The massive yellow parts are pyrite.
Recovered from a moderately low-temperature hydrothermal deposit combined with skarn formed by contact metamorphism of I-type (magnetite-series) quartz diorite.
Hematite from this location was described in 1930.
Other localities
- Waga-sennin Mine (Metasomatic Skarn, Rosette)
- Akatani Mine (Metasomatic Skarn, Platy)
- Chichibu Mine (Hydrothermal Skarn, Platy)
- Mikawa Mine (Hydrothermal, Botryoidal)
- Gozaisho Mine (Bedded Mn, Tabular)
- Iwaisawa Mine (Bedded Mn, Massive)
- Sukayu (Bog Iron, Powder)
- Gunma Mine (Bog Iron, Powder)