Kurokawa Mine
Kurokawa, Hishi village, Kiryu city, Gunma pref., Japan
Occurrence
Albite-Epidote-hornfels facies bedded Manganese deposit
Chert-hosted bedded manganese deposit in Permian - Jurassic chert block of Kurohone-Kiryu Complex, a member of Jurassic accretionary complex of Tamba-Mino-Ashio Belt. The deposit was subjected to Albite-Epidote-hornfels facies contact metamorphism by Sori Granodiorite of Sori-type Granitic Rocks. Approximately 12 km apart from Sori Granodiorite, the heat source.
Reported Minerals
- Hausmannite
- Manganosite
- Millerite
- Rhodochrosite
- Jacobsite
- Rhodonite
- Tephroite
- Neotocite
- Sulphur
Mineral Assemblages
- Hausmannite - Jacobsite - Manganosite - Tephroite - Rhodochrosite
- Rhodonite - Rhodochrosite - Tephroite
- Quartz - Rhodonite - Neotocite
- Quartz - Rhodonite - Millerite
Localities
- Mogurazawa Mine (V-bearing minerals)
- Kyurazawa Mine (Pyrosmalite-(Mn))
- Kurokawa Mine (Ni-bearing minerals)
- Kawazura Mine (Low AE facies)
- Daikei Mine (AE facies)
- Ittanda Mine (Neotocite)
Related Occurrences
- Bedded Mn (Diagenesis)
- Bedded Mn (Low-T zeolite facies)
- Bedded Mn (High-T zeolite facies)
- Bedded Mn (Prehnite-Pumpellyite facies)
- Bedded Mn (Pumpellyite-Actinolite facies)
- Bedded Mn (Greenschist facies)
- Bedded Mn (Epidote-Amphibolite facies)
- Bedded Mn (Amphibolite facies)
- Bedded Mn (Albite-Epidote-hornfels facies)
- Bedded Mn (Hornblende-hornfels facies)
- Bedded Mn (Pyroxene-hornfels facies)