| [var. Hyalophane] Nakano, Satoshi (1979): Intergrowth of barium microcline, hyalophane and albite in the barium-containing alkali feldspar from the Noda-Tamagawa Mine, Iwate Prefecture, Japan. Mineralogical Journal 9(7), 409-416. Watanabe, T. (1959) Mineralogical Journal, 2, 6, 408-421 |