AM_Glaucophane_1
Formula: Mg1.98 Fe1.42 Al1.6 (Na1.98 Li.02) Si8 O24 H2
Name: Glaucophane
Unit cell: 9.531 17.759 5.303 90.0 103.59 90.0 , V=872.46
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 ambient conditions (.001 kbar)