Citation: Hawthorne, F. C.; Kimata, M.; Cerny, P.; Ball, N. A.; Rossman, G. R.; Grice, J. D. (1991). The crystal chemistry of the milarite-group minerals sample #33 from Tittling Note: U(1,2) of WatB/NaB/KC changed to match symmetry constraints. American Mineralogist, 76, pp. 1836-1856.
Formula: Al0.729 Be2.271 Ca1.968 H4.48 K Na0.24 O30.72 Si12 Y0.032