AM_Paragonite_7 Formula: (Na.91 K.07 Ca.01 Ba.01) Al3.07 Ti.005 Fe.01 Mn.001 Mg.02 Si2.92 O12 H2 Name: Paragonite Unit cell: 5.173 8.985 19.553 90.0 93.58 90.0 , V=907.04 Space group: C12/C1 (15)

Comodi P , Zanazzi P F , Physics and Chemistry of Minerals , 27 (2000) p.377-385, Structural thermal behavior of paragonite and its dehydroxylate:, a high-temperature single-crystal study, Sample 2: T = 450 C