Citation: Ertl, A.; Pertlik, F.; Prem, M.; Post, J. E.; Kim, S. J.; Brandstatter, F.; Schuster, R. (2005). Rancieite crystals from Friesach, Carinthia, Austria Note: Birnessite group. European Journal of Mineralogy, 17, pp. 163-172.
Formula: Ca1.59 Mn0.167 O2.187
List type: interleaving
List: 2D
Basis: (1;0;0 0;1;0)
Dimensionality: 2
Formula: Ca3 O3 (Ca O)
Multiplicity: 1
Coordination sequences:
Formula: Mn O2 (Mn O2)