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Japan | |
| Dr. Matsuo Nambu ore collection (curated at Geological Survey of Japan) |
| Izumino, Y., Nakashima, K., & Nagashima, M. (2014). Cuprobismutite group minerals (cuprobismutite, hodrušhite, kupčíkite and padĕraite), other Bi–sulfosalts and Bi–tellurides from the Obari mine, Yamagata Prefecture, Japan. Journal of Mineralogical and Petrological Sciences, 109(4), 177-190. Yuya Izumino, Kazuo Nakashima, Mariko Nagashima (2013) Makovickyite and cupromakovickyite from the Obari mine, Yamagata Prefecture, Japan. Journal of Mineralogical and Petrological Sciences, 108, #2 (April 2013), 94-100. |
| Kamitani, M., Okumura, K., Teraoka, Y., Miyano, S., Watanabe, Y. (2007) Mineral Resources Map of East Asia, Geological Survey of Japan. |