Kamado Mine
Shirako, Hanno city, Saitama pref., Japan
Occurrence
Prehnite-Pumpellyite facies bedded manganese deposit
Chert-hosted bedded manganese deposit in a chert block of Sumaizuku unit, a member of accretionary complexes of Northern Chichibu Belt. The local name of Sumaizuku unit in this locality is the Anagiri Formation.
Outcrop of side wall of an adit. Hematite-rich chert of Sumaizuku unit is clearly observed as red stacking beds.
Reported Minerals
- Caryopilite
- Jacobsite
- Rhodochrosite
- Braunite
- Hematite
- Pyrite
- Chalcopyrite
- Greenalite
Mineral Assemblages
- Jacobsite - Rhodochrosite
- Braunite - Hematite
- Quartz - Greenalite - Rhodochrosite
History
- 1940-1945: Mn was mined for a few years during World War II.
Localities
- Okura Mine (Chichibu belt, Jurassic)
- Agano Mine (Chichibu belt, Jurassic)
- Kamado Mine (Chichibu belt, Jurassic)
- Naguri Mine (Chichibu belt, Jurassic)
- Yamanaka Mine (Chichibu belt, Jurassic)
- Masutomi Mine (Koma Group, Miocene)
- Ochiai Mine (Koma Group, Miocene)
- Tomisato Mine (Koma Group, Miocene)
- Inago Mine (Tanzawa Group, Miocene)
- Takamatsu Mine (Tanzawa Group, Miocene)
- Dainichi Mine (Tanzawa Group, Miocene)
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)