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Diopside

Horado Mine

Horado-Komi, Seki city, Gifu pref., Japan

Diopside

Length: 10 mm. A pointed long tabular crystal of transparent green diopside.

Recovered from an open space of skarn formed by contact metamorphism of I-type (magnetite-series) granite associated with a caldera complex. Formed in the early Paleocene (65 Ma).

Diopside from this location was described in 1952.

Diopside

Field of view: 30 mm. Groups of diopside. The transparent pale green prisms with a vitreous luster are diopside. The basement is aggregate of pale yellow grains of grossular and white calcite.

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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