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Tsugu Mine

Tsugu, Shitara city, Kita-Shitara county, Aichi pref., Japan


Moderately low-T hydrothermal deposit

Combination deposit of the moderate-T hydrothermal deposit and the low-T hydrothermal deposit associated with basaltic-andesitic dikes of the middle Miocene (15 Ma) Furumachi-Takayama body of the Tsugu Volcanic Rocks intruded in the early Miocene (18 Ma) Hokusetsu Subgroup of the Shitara Group. The Tsugu Volcanic Rocks is a member of the Shitara Volcanic Rocks, and the Shitara Volcanic Rocks is considered as a part of a caldera complex, the Shitara Caldera Complex. The Hokusetsu Subgroup is composed of marine sediments. Ages of sedimentary rocks were determined by radiolarians and fission track dating of zircon, and igneous rocks by fission track dating of zircon.

Reported Minerals

  • Gold
  • Pyrite
  • Marcasite
  • Chalcopyrite
  • Sphalerite
  • Galena
  • Stibnite
  • Jamesonite
  • Cinnabar
  • Tetrahedrite
  • Chalcostibite
  • Melanterite

Mineral Assemblages

  • Stibnite
  • Pyrite - Galena - Jamesonite
  • Pyrite - Sphalerite - Cinnabar

Details of the mine

Au and Sb were mined.


  • 1572: Shingen Takeda, famous king of local government of this area, found the deposit and started to mine.
  • 1895: Kinbei Furutani found again the deposit.
  • 1897: The mine was modernized and developed rapidly.
  • 1934: Begarn to mine gold and antimony.
  • 1942: Closed.
  • 1946: Restart to mine.
  • 1966: Closed.
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