AM_Tremolite_9 Formula: Si7.84 Al.16 Mg5 Ca1.8 Na.56 K.24 O23.332 (F.656 Cl.012 H1.332) Name: Tremolite Unit cell: 9.863 18.048 5.285 90.0 104.79 90.0 , V=909.60 Space group: C12/M1 (12)

Hawthorne F C , Grundy H D , The Canadian Mineralogist , 14 (1976) p.334-345, The crystal chemistry of the amphiboles: IV. X-ray and neutron refinements, of the crystal structure of tremolite, Sample: X-ray data