TrekGEO > Mineral Trail > Tokai region > Gifu pref. > Olivenite

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Kinjo Mine

Kakino, Yamagata city, Gifu pref., Japan


Field of view: 7 mm. Olivenite associated with adamite. The radial group of white acicular crystals are olivenite. The blue parts at the outer rim of olivenite is adamite, a isomorph mineral of olivenite. The white parts at the basement are calcite of the host skarn, and the brown parts are limonite crusts.

Recovered from a meteoric oxidation zone of a moderately high-temperature hydrothermal deposit combined with skarn formed by contact metamorphism of I-type (Magnetite-series) granite associated with a caldera complex.

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