Citation: Makino, K.; Tomita, K. (1989). Cation distribution in the octahedral sites of hornblendes. American Mineralogist, 74, pp. 1097-1105.
Formula: Al3 Ca1.86 Fe1.33 H2 K0.06 Mg2.87 Na0.51 O24 Si5.96
Chemical name: Na0.51 K0.06 Ca1.86 Mg2.87 Fe1.33 Al0.96 (Al2.04 Si5.96 O22) (O H)2
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Al26 Ca4 Fe14 K4 Mg14 Na8 O48 Si16 (Al13 Ca2 Fe7 K2 Mg7 Na4 O24 Si8)
Multiplicity: 1