TrekGEO > Mineral Trail > Kanto region > Tokyo metropolis > Atacamite

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Izu-Oshima Island

Monashi, Ohshima city, Tokyo, Japan

Source for Cu


Field of view: 20 mm. Atacamite formed by sublimation. The green crusts are aggregate of fine atacamite. The black basement is tholeiitic basalt to andesite lava with many vesicules.

Recovered from volcanic lapilli of a caldera in an oceanic arc. Formed in the 6th century (1.4 ka).

Atacamite from this location was described in 2005.

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