AM_Rhodesite_1 Formula: K.255 Ca.494 Si6 O17.944 H12 Name: Rhodesite Unit cell: 23.4439 6.553 7.055 90.0 90.0 90.0 , V=1083.84 Space group: PMAM (51)

Hesse K F , Liebau F , Merlino S , Zeitschrift fur Kristallographie , 199 (1992) p.25-48, Crystal structure of rhodesite, HK1-xNax+2yCa2-y(lB,3,22)(Si8O19)*(6-z)H2O,, from three localities and its relation to other silicates with dreier double layers, Locality: Trinity County, California, USA