AM_Palygorskite_3
Formula: Si4 Mg2 O15 H9
Name: Palygorskite
Unit cell: 13.304 17.876 5.251 90.0 107.01 90.0 , V=1194.17
Space group: C12/M1 (12)

Chiari G , Giustetto R , Ricchiardi G , European Journal of Mineralogy , 15 (2003) p.21-33, Crystal structure refinements of palygorskite and Maya Blue from molecular, modeling and powder synchrotron diffraction, Sample: MP