TrekGEO > Mineral Trail > Tohoku region > Aomori pref. > Kodomari

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Kodomari, Nakadomari city, Kita-Tsugaru county, Aomori pref., Japan


Neutral metasomatic rocks of Interstratified mineral zone

Calcite veins in andesitic tuff in the early - middle Miocene (16.5 - 15.3 Ma) Fuyube Formation. These veins were probably formed by the upper bed, early - late Miocene (17.0 - 10.0 Ma) Tappi Volcanic Rocks. The Tappi Volcanic Rocks distributes less than 100 apart from this locality.


Outcrop of andesitic tuff of Fuyube Formation. The brown host is andesitic tuff. The white vein is a calcite vein and is approximately 30 mm thick. Scalenohedral calcite crystals are in the open space of the vein as seen at the lower left of the photograph. Calcite near the boundary between the white calcite vein and the host is brown.

Reported Minerals

Mineral Assemblages

  • Calcite


Related Occurrences

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