A cobalt-copper mine operated during the period 1941-1945. Owned by the Nippon Cobalt Mining Co. and/then the Mitsui Mining Co. Ore is a contact deposit between Paleozoic limestone and granite porphyry. Output was 392 tons. Includes Eboshi and Yoboshi orebodies.
Ref.:
Rocks & Min.: 22:223. ("Ota-machi, Mine-gun" is an error).
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