Citation: Grew, E. S.; Barbier, J.; Britten, J.; Halenius, U.; Shearer, C. K. (2007). The crystal chemistry of welshite, a non-centrosymmetric (P1) aenigmatite- sapphirine-surinamite group mineral. American Mineralogist, 92, pp. 80-90.
Formula: Al1.71 As0.27 Be3.33 Ca3.78 Fe0.96 Mg7.87 Mn1.35 O40 Sb3 Si5.73
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Al4 As4 Be2 Ca2 Fe2 Mg9 Mn10 O40 Sb3 Si6 (Al4 As4 Be2 Ca2 Fe2 Mg9 Mn10 O40 Sb3 Si6)
Multiplicity: 1