Shimokawa mine

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{{Infobox mine

| name = Shimokawa Mine

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| pushpin_map = Japan

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| coordinates = {{coord|44.215|N|142.701|E|format=dms|display=inline,title}}[https://www.mindat.org/loc-146259.html Mindat.org Shimokawa mine, Shimokawa, Kamikawa Province, Hokkaido, Japan]

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| place = Shimokawa, Hokkaido

| subdivision_type = Prefecture

| state/province = Hokkaido

| country = Japan

| products = Copper, Cobalt, Zinc, pyrite

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| opening year = {{Start date|1941}}

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| closing year = {{end date|1982}}

| owner = Mitsubishi Corporation

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The Shimokawa Copper Mine, Shimokawa, Hokkaido, Japan is a polymetal mine particularly rich in copper. Its main ore minerals were chalcopyrite, pyrrhotite, pyrite and sphalerite.

The ore body was formed at diabase intrusion into the sedimentary slate layer.[https://www.jstage.jst.go.jp/article/shigenchishitsu1951/21/106/21_106_104/_article The Exploration of the Shimokawa Mine] The formation of ore have started at mid-ocean ridge and was very prolonged, with several zones of different composition attributed to changing ambient conditions are discernible across ore body.[https://www.jstage.jst.go.jp/article/shigenchishitsu1951/35/191/35_191_211/_article Study on Massive Sulfide Ores from the Shimokawa Mine, Hokkaido, Japan]