Citation: Kampf, A. R. (1991). Grandreefite, Pb2F2SO4: Crystal structure and relationship to the lanthanide oxide sulfates, Ln2O2SO4. American Mineralogist, 76, pp. 278-282.
Formula: F2 O4 Pb2 S
List type: interleaving
List: 2D
Basis: (0;1;0 0;0;1)
Dimensionality: 2
Formula: F4 O8 Pb4 S2 (F2 O4 Pb2 S)
Multiplicity: 1