AM_Ferro-actinolite Formula: Fe3.98 Mn.196 Mg.88 Ti.002 Ca1.97 Na.028 Si7.98 Al.02 K.044 H1.88 O24 Name: Ferro-actinolite Unit cell: 9.977 18.287 5.308 90.0 104.81 90.0 , V=936.27 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: NMNH 168215, from Goose Creek Quarry, Leesburg, Virginia,, in an alteration of hornblende