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Kasuga Mine

Kasuga-Mitsuka, Ibigawa city, Ibi county, Gifu pref., Japan


Field of view: 50 mm. Diopside associated with actinolite. The opaque white to pink parts with clear cleavages are diopside. Surrounding aggregates of fine grayish green crystals are actinolite.

Recovered from the dolomite skarn formed by contact metamorphism of S-type (Ilmenite-series) granite. Formed in the Late Cretaceous (96 Ma).

Diopside from this location was described in 1960.

Other localities

  • Chichibu Mine (Skarn, White)
  • Kasuga Mine (Skarn, White)
  • Horado Mine (Skarn, Green)
  • Ishibaiyama (Dolomite Skarn, Granular)
  • Mount Hiiragi (Dolomite Skarn, Granular)
  • Kami-Sano (Basalt, Green)
  • Arai (Serpentinite, Prismatic)
  • Kamioka Mine (Migmatite, Tabular)
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