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Japan | |
| Ryoji Tanaka collection |
| Matsubara, S., Miyawaki, R. (1999). Baghdadite from the Akagana Mine, Iwate Prefecture, Japan. Bull. Nat. Sci. Mus., Tokyo, Ser. C., 25 (3-4): 65-72. Bunno, M., Shimazaki, H., & Sato, K. (1982). Occurrence and genesis of bicchulite and tilleyite skarns at the Sakae adit, the Akagane mine, Iwate Prefecture. Mining Geology, 32, 141-150 |
| Dr. Matsuo Nambu ore collection (curated at Geological Survey of Japan) |
| Matsubara, S. (2003) Minerals in Japan (Field Best Encyclopedia, vol. 15) |