 | | Journal (article/letter/editorial) | | 300–312, 2015 Bismuth minerals from the W–Mo–Sn deposits hosted in the Iwafune granitoids, Niigata Prefecture...Prefecture, Japan Yuya IZUMINO* and Kazuo NAKASHIMA** ** * Graduate School of Science and Engineering Yamagata...University, Kojirakawa 1–4–12, Yamagata 990–8560, Japan Department of Earth and Environmental Sciences,...990–8560, Japan Bismuth minerals are described in 10 W–Mo–Sn deposits (Wakikawa, Shintoku, Takane, Shionomachi...Iwafune granitoids, located in the Uetsu region, Niigata Prefecture, Japan. The results are compared with |  | | Journal (article/letter/editorial) | | oxidized and reduced granitoids from the Uetsu region, NE Japan Yuya Izumino 1 & Teruyuki Maruoka 2 & Kazuo...between bismuth (Bi) mineral speciation and redox state in three types of granitoids from the Uetsu region...region, northeast Japan is investigated. Electron microprobe analysis of Bi minerals, sphalerite, Mg-Fe-bearing...redox state of the granitoids. For example, native bismuth and bismuthinite are abundant and Bi sulfosalts...(Bi3+) are abundant and trace amounts of native bismuth (Bi0) and bismuthinite are found in the highest |
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