| | Journal (article/letter/editorial) | the Nakakoshi Copper Deposits, Central Hokkaido, Japan Norio Tsushima*, Hiroharu Matsueda** and Shunso...060-0810, Japan * present address: Toyoha Mining Co. Ltd., Jozankei 849, Sapporo 061-2301, Japan [e-mail:...060-0810, Japan *** present address: Geological Survey of Japan, Higashi 11-3, Tsukuba 305-8547, Japan Keywords:...arsenopyrite, with small amounts of galena and marcasite. The copper contents are generally low, as Fujiwara...pyrite, arsenopyrite and chalcopyrite, and little marcasite. The ore grades of samples reach 4.3–7.9 % Cu |
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