TrekGEO > Mineral Trail > Tokai region > Gifu pref. > Bismutite

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Takane Mine

Hirukawa, Nakatsugawa city, Gifu pref., Japan


Field of view: 10 mm. Bismutite associated with bismuth. The pinkish-silver grain exhibiting perfect cleavage is bismuth. The thin earthy black crust over bismuth is zavaritskite. The thin pale brown crust over zavaritskite is bismutite. The massive translucent part with a vitreous luster at the upper left is gangue quartz. The radial group of platy white crystals around bismutite is muscovite.

Recovered from a quartz vein of a pneumatolytic deposit formed near the boundary between welded tuff and S-type (Ilmenite-series) granite, members of a caldera complex.

Bismutite from this location was described in 1947.

Other localities

  • Takane Mine (Pneumatolytic, Crust)
  • Ebisu Mine (Pneumatolytic, Crust)
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