Citation: Makino, K.; Tomita, K. (1989). Cation distribution in the octahedral sites of hornblendes sample P-P from Parau Island. American Mineralogist, 74, pp. 1097-1105.
Formula: Al2.04 Ca1.86 Fe1.31 H2 Mg3.83 Na2.28 O24 Si5.96
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Al16 Ca4 Fe14 Mg14 O48 Si16 (Al8 Ca2 Fe7 Mg7 O24 Si8)
Multiplicity: 1