Citation: Jenkins, D. M.; Hawthorne, F. C. (1995). Synthesis and rietveld refinement of amphibole along the join Ca2Mg5Si8O22F2 - NaCa2Mg4Ga3Si6O22F2 Sample: PARG 9-1. The Canadian Mineralogist, 33, pp. 13-24.
Formula: Ca1.8 F2 Ga1.28 Mg4.82 Na0.46 O22 Si7.04
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: F4 Ga20 Mg10 O44 Si16 (F2 Ga10 Mg5 O22 Si8)
Multiplicity: 1