Citation: Hawthorne, F.C.; Grundy, H.D. (1976). The crystal chemistry of the amphiboles: IV. X-Ray and neutron refinements of the crystal structure of tremolite. Canadian Mineralogist, 14, pp. 334-345.
Formula: Al0.2 Ca1.8 F0.66 H1.34 K0.12 Mg5 Na0.38 O23.34 Si7.8
Chemical name: (Na.38 K.12 Ca1.80) Mg5 (Al.2 Si7.8) O22 (O H)1.34 F.66
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Al8 F4 H4 Mg10 O48 Si16 (Al4 F2 H2 Mg5 O24 Si8)
Multiplicity: 1