Citation: Aurisicchio, C.; Fioravanti, G.; Grubessi, O.; Zanazzi, P. F. (1988). Reappraisal of the crystal chemistry of beryl Sample: 19 Note: U(1,2) for Na/Cs/Rb altered to match symmetry constraints.. American Mineralogist, 73, pp. 826-837.
Formula: Al2.009 Be2.595 Cs0.131 Li0.393 Na0.239 O18 Rb0.002 Si6.003
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Al10 Be6 Li6 O36 Si18 (Al5 Be3 Li3 O18 Si9)
Multiplicity: 1