National Institute of Advanced Industrial Science and Technology (AIST) This page is a page of the former research institute. We stopped updating on March 31.2001.
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幌加内産砂金と砂白金.
鉛色に見えるもの白金粒、黄色が金粒、黒がクロマイト粒。
砂金・砂白金粒の最大のもので径1ｍｍ程度。

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