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Akatani Mine

Higashi-Akatani, Shibata city, Niigata pref., Japan


Field of view: 10 mm. Aragonite crystals. The short prismatic white crystals are aragonite. The massive brown basement is limestone with fine hematite contamination.

Recovered from an open space of a moderate-temperature hydrothermal deposit associated with an oxidative metazomatic zone combined with skarn formed by contact metamorphism of S-type (Ilmenite-series) granodiorite.

Aragonite from this location was described in 1982.

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