AM_Maya Blue_2 Formula: Si12 Mg6 O45.65 C2.16 N.27 H27 Name: Maya Blue Unit cell: 13.41 17.891 15.74 90.0 107.06 90.0 , V=3610.15 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 (3 cells+indigo)