TrekGEO > Mineral Trail > Kanto region > Tochigi pref. > Hikida Mine

Japanese page

Hikida Mine

Hikida, Kanuma city, Tochigi pref., Japan


Moderately high-T hydrothermal deposit

Moderate temperature hydrothermal deposit probably associated with the early Paleocene (65 Ma) welded tuff of the Okunikko Rhyolites. The Okunikko Rhyolites unconformably overlies the Late Jurassic (145 Ma) Kurohone-Kiryu Unit. The Kaolinite-Siderite ore in the deposit suggests that the deposit was formed from neutral to alkaline fluid. The Kurohone-Kiryu Unit corresponds to the Kanayama Unit of the Tamba-Mino-Ashio accretionary complex. Ages of sedimentary rocks were determined by radiolarians, and welded tuff by K-Ar radiometric dating.

Reported Minerals

Mineral Assemblages

  • Quartz(Gangue) - Galena - Sphalerite - Pyrite
  • Quartz(Gangue) - Kaolinite - Siderite

Details of the mine

Two major deposits, main deposit and Iwahana deposit, were mined.


  • 1938: Started to mine.
  • 1945: The mine was closed.
Copyright (c) 2015 NariNari, All Rights Reserved.