AM_Rhodesite_2 Formula: K.25 Ca.5 Si6 O17.805 H14 Name: Rhodesite Unit cell: 23.428 6.557 7.064 90.0 90.0 90.0 , V=1085.15 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: San Venanzo, Italy