AM_Nontronite_2 Formula: Na.5 Fe2 (Si3.464 Al.536) O12 H2 Name: Nontronite Unit cell: 5.277 9.14 9.78 90.0 101.0 90.0 , V=463.04 Space group: C12/M1 (12)

Manceau A , Chateigner D , Gates W P , Physics and Chemistry of Minerals , 25 (1998) p.347-365, Polarized EXAFS, distance-valence least-squares modelling (DVLS),, and quantitative texture analysis approaches to the structural, refinement of Garfield nontronite