Host: Japan Association of Mineralogical Sciences
Bismuth, bismuthinite, ikunolite, joseite A, joseite B and kobellite as Bi-bearing minerals occur in association with chalcopyrite, pyrrhotite, and gold in quartz veins cutting quartz porphyry at the Jishakuyama ore deposit of the Akagane mine, Oshu City, Iwate Prefecture, Japan. Among them kobellite is the first occurrence in Japan. Also cannonite and bismite are found as secondary minerals.