Citation: Smyth, J.R. (1974). The crystal chemistry of armacolites from apollo 17. Earth and Planetary Science Letters, 24, pp. 262-270.
Formula: Fe0.5 Mg0.5 O5 Ti2
Chemical name: (Mg.5 Fe.5) Ti2 O5
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Fe4 Mg4 O20 Ti8 (Fe Mg O5 Ti2)
Multiplicity: 1
Coordination sequences: