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Japan | |
| Specimens supplied to Iwamoto by Yoshio Kisaki, 15 February 1984. |
| Anthony, J.W., Bideaux, R.A., Bladh, K.W., Nichols, M.C. (2001) Handbook of Mineralogy. Mineralogical Society of America, Chantilly, VA 20151-1110, USA. Russell, J.D., McHardy, W.J., Fraser, A.R. (1969) Imogolite: a unique aluminosilicate. Clay Minerals: 8(1): 87-99. |
| Petrov, Alfredo (n.d.) Personal Communication. |
Fukaiwa, Kanuma City, Tochigi Prefecture, Japan