AM_Actinolite_12 Formula: Fe2.711 Mn.04 Mg2.395 Ti.002 Ca1.824 Na.12 Si7.92 Al.08 K.016 H1.88 O24 Name: Actinolite Unit cell: 9.886 18.171 5.297 90.0 104.61 90.0 , V=920.78 Space group: C12/M1 (12)

Evans B W , Yang H , American Mineralogist , 83 (1998) p.458-475, Fe-Mg order-disorder in tremolite-actinolite-ferro-actinolite at ambient, and high temperature, Sample: 12BA, from Bloom Lake, Quebec, Canada in an iron formation