AM_Zoisite_21 Formula: (Sr1.74 Ca.26) Al3 Si3 O13 H Name: Zoisite Unit cell: 16.3376 5.5936 10.2407 90.0 90.0 90.0 , V=935.86 Space group: PNMA (62)

Dorsam G , Liebscher A , Franz G , Gottschalk M , American Mineralogist , 92 (2007) p.1133-1147, Crystal chemistry of synthetic Ca2Al3Si3O12OH - Sr2Al3Si3O12OH, solid solution series of zoisite and clinozoisite, Locality: synthetic, Sample: Run no. = Au44, X(Sr) = .87