AM_Tremolite_16 Formula: (Mg4.95 Fe.05) Ca2 Si8 O24 H2 Name: Tremolite Unit cell: 9.64 17.89 5.228 90.0 105.1 90.0 , V=870.49 Space group: C12/M1 (12)

Comodi P , Mellini M , Ungaretti L , Zanazzi P F , European Journal of Mineralogy , 3 (1991) p.485-499, Compressibility and high pressure structure refinement, of tremolite, pargasite and glaucophane, Sample: pressure at 35 kbar