TrekGEO > Mineral Trail > Kanto region > Chiba pref. > Aragonite

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Kurohai village, Choshi city, Chiba pref., Japan


Field of view: 30 mm. Aragonite crystals. The radial group of pink prisms with a vitreous luster is aragonite. The massive black host is bronzite andesite with vesicules. Aragonite distributes in specific beds of andesite.

Recovered from a vesicule of a high-Mg andesite lava. Formed in the early Miocene (22 Ma).

Aragonite from this location was described in 1961.

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