AM_Hornblende_13 Formula: Si7.28 Al Mg3.49 Fe1.33 Ti.06 Ca1.66 Na.625 Mn.02 K.015 H2 O23.8 F.2 Name: Hornblende Unit cell: 9.857 18.112 5.309 90.0 104.81 90.0 , V=916.33 Space group: C12/M1 (12)

Mancini F , Sillanpaa R , Marshall B , Papunen H , The Canadian Mineralogist , 34 (1996) p.835-844, Magnesian hornblende from a metamorphosed ultramafic body in southwestern, Finland: crystal chemistry and petrological implications, Locality: southwestern Finland