TrekGEO > Mineral Trail > Koshinetsu region > Fukui pref. > Mimetite

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Nakatatsu Mine

Kami-Ono, Ono city, Fukui pref., Japan


Field of view: 5 mm. Mimetite associated with magnetite. The crusts of hexagonal yellowish-green prisms are mimetite. The balck basement is magnetite. The white part at the right is quartz. The light brown parts are limonite crusts on magnetite.

Recovered from a meteoric oxidation zone of a moderate-temperature hydrothermal deposit combined with skarn formed by contact metamorphism of I-type (magnetite-series) quartz porphyry.

Other localities

  • Nakatatsu Mine (Hydrothermal Skarn, Crust)
  • Obuki Mine (Pneumatolytic Skarn, Prismatic)
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