Citation: Viswanathan, K.; Brandt, K. (1980). The crystal structure of ternary (Ba,K,Na)-feldspar and its significance. American Mineralogist, 65, pp. 472-476.
Formula: Al1.18 Ba0.19 K0.59 Na0.22 O8 Si2.82
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: