Citation: Fanfani, L.; Nunzi, A.; Zanazzi, P. F.; Zanzari, A. R. (1973). The copiapite problem: The crystal structure of a ferrian copiapite. American Mineralogist, 58, pp. 314-322.
Formula: Fe4.69 H42 O46 S6
List type: interleaving
List: 1D
Basis: (1;0;1)
Dimensionality: 1
Formula: Fe2 O17 S3 (Fe2 O17 S3)