Citation: Marzoni Fecia di Cossato, Y.; Orlandi, P.; Pasero, M. (1989). Manganese-bearing beraunite from Mangualde, Portugal: mineral data and structure refinement. The Canadian Mineralogist, 27, pp. 441-446.
Formula: Fe4.8 H17 Mn1.2 O27 P4
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Fe20 H56 Mn8 O100 P16 (Fe5 H14 Mn2 O25 P4)
Multiplicity: 1