Citation: Phillips, M. W.; Ribbe, P. H. (1973). The structures of monoclinic potassium-rich feldspars Note: variety adularia. American Mineralogist, 58, pp. 263-270.
Formula: Al1.02 K0.88 Na0.12 O8 Si2.98
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Al16 O32 Si16 (Al O2 Si)
Multiplicity: 1
Coordination sequences: