Citation: Burns, P. C.; Cooper, M. A.; Hawthorne, F. C. (1994). Jahn-Teller-distorted MnO6 octahedra in fredrikssonite, the fourth polymorph of Mg2Mn(BO3)O2. The Canadian Mineralogist, 32, pp. 397-403.
Formula: Al0.04 B2 Fe0.48 Mg3.92 Mn1.56 O10
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Al4 B4 Fe6 Mg8 Mn4 O20 (Al2 B2 Fe3 Mg4 Mn2 O10)
Multiplicity: 1