Citation: Ilyukhin, V. V.; Khomyakov, A. P.; Shumyatskaya, N. G.; Voronkov, A. A.; Nevskii, N. N.; Belov, N. V. (1981). The crystal structure of the new natural zirconosilicate K4Zr2Si6O18*2H2O Note: dimorphic with umbite Note: y(O7) corrected. Soviet Physics Doklady, 26, pp. 118-120.