Citation: Makino, K.; Tomita, K. (1989). Cation distribution in the octahedral sites of hornblendes sample I-P from Iratsu, Japan. American Mineralogist, 74, pp. 1097-1105.
Formula: Al1.8 Ca1.702 Fe1.771 H2 Mg3.343 Na3.384 O24 Si6.2
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Al16 Ca4 Fe14 Mg10 Na4 O48 Si16 (Al8 Ca2 Fe7 Mg5 Na2 O24 Si8)
Multiplicity: 1