Citation: Araki, T.; Moore, P.B. (1974). Pinakiolite, Mg2 Mn(III) O2 B O3, warwickite, Mg (Mg.5 Ti.5) O (B O3), wightmanite, Mg5 (O) (O H)5 (B O3) * (H2 O)n: Crystal chemistry of complex 3A wallpaper structures. American Mineralogist, 59, pp. 985-1004.
Formula: B Mg1.8 Mn1.09 O5
Chemical name: Mg1.8 Mn Mn.09 O2 (B O3)
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: B8 Mg12 Mn20 O40 (B2 Mg3 Mn5 O10)
Multiplicity: 1