TrekGEO > Mineral Trail > Chugoku region > Shimane pref. > Koura-ga-hana

Japanese page

Koura-ga-hana

Kitaura, Mihonoseki village, Matsue city, Shimane pref., Japan

Occurrence

Prehnite-Pumpellyite facies metamorphic rocks

Prehnite-Pumpellyite-Fe2+ veins in dolerite-gabbro dikes of Josoji Formation.

Kouragahana

Prehnite veins in dolerite. Grayish-green veins at both sides of the coin are composed of prehnite, and grayish-green color is by pumpellyite-Fe2+. As shown in this photograph, the width of the vein changes in the short distance. Black babingtonite crystals are perched on botryoidal aggregates of prehnite. The center of the vein is filled with white calcite as shown at the right vein. The surrounding host is dolerite with white anorthite grains.

Reported Minerals

  • Prehnite
  • Babingtonite
  • Pumpellyite-Fe2+
  • Calcite
  • Laumontite

Mineral Assemblages

  • Prehnite - Babingtonite - Calcite
  • Pumpellyite-Fe2+
  • Laumontite
Copyright (c) 2025 NariNari, All Rights Reserved.