Dokura Mine
Yunishigawa, Nikko city, Tochigi pref., Japan
Occurrence
Pneumatolytic Mn skarn deposit
Stratified Mn deposit in accretionary complex of Kuriyama Formation subjected to contact metamorphism to form pneumatolytic skarn by Tadamigawa Granites. There are opinions that Kuriyama Formation is a part of Kurohone-Kiryu Complex of Ashio Belt.
Reported Minerals
- Pyrrhotite
- Sphalerite
- Pyrite
- Chalcopyrite
- Johannsenite
- Mangano-grunerite
- Rhodonite
- Pyroxmangite
- Fluorite
- Ranciéite
- Rhodochrosite
- Chamosite
- Greenockite
- Hemimorphite
- Muscovite
Localities
- Dokura Mine (Fluorite)