Kuroko, Shakanai, Akita Gold-silverore, Konomai mine, Hökkaido The Kagoshima University Museum...
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Kuroko, Shakanai, Akita Gold-silverore, Konomai mine, Hökkaido The Kagoshima University Museum Special Exhibition Gold, a Gift from the Earth October 24 — November 26, 2002Chalcopyrite