Takaneyama Mine
Naka, Shimoda city, Shizuoka pref., Japan
Synonym
Takane Mine, Tsujita Mine
Occurrence
Moderate-T hydrothermal deposit
Moderate temperature hydrothermal deposit in andesitic and basaltic pyroclastic rocks of the early Pliocene (5.0 Ma) Harada Formation of the Shirahama Group. The pyroclastic rocks, the host of the deposit, is calc-alkaline to tholeiitic, and have been subjected to strong prppylitization alteration. The Shirahama Group unconformably overlies the late Miocene (7.5 Ma) Yugashima Group. Ages of volcanic rocks were determined by K-Ar radiometric dating and fission track dating of zircon.
Reported Minerals
- Ranciéite
- Todorokite
- Birnessite
- Quartz
- Chalcedony
- Hemimorphite
- Covellite
- Bornite
- Chalcopyrite
- Tetrahedrite
- Sphalerite
- Pyrite
- Malachite
- Azurite
Mineral Assemblages
- Quartz(Gangue) - Ranciéite - Todorokite - Birnessite
History
- 1918: Began to mine gold.
- 1924: The mine was closed.
- 1943: Began to mine manganese.
- 1944: The mine was closed.
Localities
- Kisan-mori Mine (Cu-Pb-Zn)
- Mikawa Mine (Cu-Pb-Zn, Siderite)
- Takami Mine (Cu-Pb-Zn)
- Gunma Mine (Cu-Pb-Zn)
- Yunosawa Mine (Pb-Zn)
- Okuto Mine (Pb-Zn)
- Arakawa Mine (Cu-Zn)
- Osarizawa Mine (Cu-Zn)
- Sayama Mine (Cu-Zn)
- Washinosu Mine (Cu-Zn)
- Yashu Mine (Cu)
- Takaneyama Mine (Cu-Zn-Mn)
- Kawazu Mine (Zn-Au-Te-Mn)
- Manju Mine (Zn)
- Mount Nesugata (Mn oxide)
- Ryushima Mine (Mn carbonate)