| Yoshinaga, Mayumi. "Sonolite, a new manganese silicate mineral." Mem Fac Sci Kyushu Univ Ser D Geol 14 (1963): 1-21. Katsu Kaneko (1956) Symposium del Manganeso, XX Congreso Geologico Internacional, Mexico D.F. Akira Kato (undated manuscript): Country rock and Minerals of the Kaso mine, Kanuma City, Tochigi Prefecture. (in japanese) |