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Japan | |
| Fujii, N., & Inoue, H. (1971). Geologic Features and Classification of the Pyrophyllite Deposits in the Hokushin District, Central Japan. Mining Geology, 21(110), 407-417. |
| Yoshinaga, M. (1959) Mem. Fac. Sci., Kyushu University, Ser. D, 9, 47-53. |
| Fujii, N., & Inoue, H. (1971). Geologic Features and Classification of the Pyrophyllite Deposits in the Hokushin District, Central Japan. Mining Geology, 21(110), 407-417. |