Citation: Swainson, I. P.; Dove, M. T.; Schmahl, W. W.; Putnis, A. (1992). Neutron powder diffraction study of the akermanite-gehlenite solid solution series Sample: 50% Ak. Physics and Chemistry of Minerals, 19, pp. 185-195.
Formula: Al0.99 Ca2 Mg0.46 O7 Si1.52
List type: noninterleaving
List: 2D
Basis: (1;0;0 0;1;0)
Dimensionality: 2
Formula: Al6 Mg2 O14 Si4 (Al3 Mg O7 Si2)
Multiplicity: 1