AM_Actinolite_14 Formula: Fe2.757 Mn.316 Mg2.049 Al.294 Ti.004 Ca1.772 Na.192 Si7.756 K.022 H1.836 O23.952 F.048 Name: Actinolite Unit cell: 9.884 18.189 5.302 90.0 104.6 90.0 , V=922.41 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: AMNH 44973, from Cumberland, Rhode Island in a quartzite