AM_Tremolite_13 Formula: Na1.28 K.3 Mg3.43 Fe1.4 Mn.05 Ti.06 Al.66 Li.02 Ca1.23 Si7.38 O22.79 (F1.21 H.79) Name: Tremolite Unit cell: 9.888 18.022 5.29 90.0 104.72 90.0 , V=911.75 Space group: C12/M1 (12)

Hawthorne F C , Oberti R , Martin R F , The Canadian Mineralogist , 44 (2006) p.1171-1179, Short-range order in amphiboles from the Bear Lake diggings, Ontario, Locality: Bear Lake diggings, Bancroft area of Ontario, Canada, Sample: 721