AM_Palygorskite_4
Formula: Si4 Mg2 O15 H9
Name: Palygorskite
Unit cell: 12.762 17.882 5.249 90.0 90.0 90.0 , V=1197.87
Space group: PBMN (53)

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: OP