Citation: Smyth, J. R.; Hazen, R. M. (1973). The crystal structures of forsterite and hortonolite at several temperatures up to 900 C Note: variety hortonolite T = 600 C. American Mineralogist, 58, pp. 588-593.
Formula: Fe1.1 Mg0.75 Mn0.15 O4 Si
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Fe8 Mg8 Mn8 O16 Si4 (Fe2 Mg2 Mn2 O4 Si)
Multiplicity: 1