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Takanosu Mine

Kami-Kasuo, Kanuma city, Tochigi pref., Japan

Occurrence

Hornblende-hornfels facies bedded manganese deposit

Chert-hosted bedded manganese deposit in the chert block of Kurohone-Kiryu Complex, a member of Jurassic accretionary complex of Tamba-Mino-Ashio Belt. The deposit was subjected to Hornblende-hornfels facies contact metamorphism by Kobugahara Granodiorite. Slate near this deposit was metamorphosed to Cordierite-bearing hornfels. Approximately 2 km apart from Kobugahara Granodiorite, the heat source.

Reported Minerals

Mineral Assemblages

  • Rhodonite - Mn bearing tremolite
  • Rhodonite - Pyrosmalite-(Mn)
  • Rhodonite - Calcite- Tučekite(Tucekite)
  • Chert(Host) - Galena
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