AM_Maya Blue Formula: Si4 Mg2 O14.568 C.718 N.088 H4.28 Name: Maya Blue Unit cell: 13.38 17.885 5.25 90.0 106.81 90.0 , V=1202.65 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+indigo