Citation: Oberti, R.; Hawthorne, F. C.; Camara, F.; Raudsepp, M. (1998). Synthetic fluoro-amphiboles: site preferences of Al, Ga, Sc and inductive effects on mean bond-lengths of octahedra Sample: A4. The Canadian Mineralogist, 36, pp. 1245-1252.
Formula: Al1.89 Ca2.21 F2 Ga1.01 Mg4.1 Na1.62 O22 Si6
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Al26 F4 Ga26 Mg10 O44 Si16 (Al13 F2 Ga13 Mg5 O22 Si8)
Multiplicity: 1