Citation: Oberti, R.; Hawthorne, F. C.; Ungaretti, L.; Cannillo, E. (1995). [6]Al disorder in amphiboles from mantle peridotites Sample: F12. The Canadian Mineralogist, 33, pp. 867-878.
Formula: Al2.814 Ca1.8 Cr0.04 Fe0.44 H2 K0.01 Mg3.81 Na0.915 O24 Si6.096
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Al22 Ca8 Cr4 Fe18 H4 K10 Mg18 Na10 O48 Si16 (Al11 Ca4 Cr2 Fe9 H2 K5 Mg9 Na5 O24 Si8)
Multiplicity: 1