Citation: Grundy, H. D.; Ito, J. (1974). The refinement of the crystal structure of a synthetic non-stoichiometric Sr feldspar. American Mineralogist, 59, pp. 1319-1326.
Formula: Al1.74 Na0.03 O8 Si2.26 Sr0.84
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: