Citation: Kohatsu, J. J.; Wuensch, B. J. (1974). Semseyite (Pb9Sb8S11) and the crystal chemistry of the plagionite group, Pb3+2nSb8S15+2n Note: structure from ICSD. American Mineralogist, 59, pp. 1127-1127.
Formula: Pb9 S21 Sb8
List type: interleaving
List: 2D
Basis: (1;0;0 0;1;0)
Dimensionality: 2
Formula: Pb18 S42 Sb16 (Pb9 S21 Sb8)
Multiplicity: 1