Citation: Hamada, M.; Akasaka, M.; Seto, S.; Makino, K. (2010). Crystal chemistry of chromian pumpellyite from Osayama, Okayama Prefecture, Japan Sample: ocp1211. American Mineralogist, 95, pp. 1294-1304.
Formula: Al2.36 Ca2 Cr0.04 Fe0.1 H3 Mg0.47 Mn0.01 O14 Si3 Ti0.02
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Al12 Cr4 Fe4 H12 Mg4 Mn4 O56 Si12 Ti8 (Al3 Cr Fe H3 Mg Mn O14 Si3 Ti2)
Multiplicity: 1