Citation: Pinckney, L. R.; Burnham, C. W. (1988). High-temperature crystal structure of pyroxmangite Sample: T = 24 C. American Mineralogist, 73, pp. 809-817.
Formula: Mg0.225 Mn6.775 O21 Si7
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Mg20 Mn28 O84 Si28 (Mg5 Mn7 O21 Si7)
Multiplicity: 1
Coordination sequences: