TrekGEO > Mineral Trail > Koshinetsu region > Fukui pref. > Quartz

Japanese page


Nakatatsu Mine

Kami-Ono, Ono city, Fukui pref., Japan


Field of view: 50 mm. A group of hedenbergite. The coarse grayish-green prisms are hedenbergite. The black grains with a metallic luster at the right end and at the upper right are sphalerite.

Recovered from a moderate-temperature hydrothermal deposit combined with skarn formed by contact metamorphism of I-type (magnetite-series) quartz porphyry. Formed in the Late Cretaceous (66 Ma).

Hedenbergite from this location was described in 1952.

Other localities

Copyright (c) 2017 NariNari, All Rights Reserved.