Citation: Mellini, M.; Merlino, S.; Pasero, M. (1986). X-ray and HRTEM structure analysis of orientite. American Mineralogist, 71, pp. 176-187.
Formula: Ca8 H18 Mn10.64 O56 Si12.32
Chemical name: Ca8 Mn10.64 (Si12.32 O42) (O H)10 (H2 O)4
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Mn14 O56 Si15 (Mn14 O56 Si15)
Multiplicity: 1