AM_Potassic-chlorohastingsite Formula: Na.67 K.36 Mg1.76 Fe2.94 Al1.88 Ti.04 Ca1.74 Si6.44 O25.16 Cl.56 F.26 H1.16 Name: Potassic-chlorohastingsite Unit cell: 9.884 18.143 5.332 90.0 104.86 90.0 , V=924.18 Space group: C12/M1 (12)

Oberti R , Ungaretti L , Cannillo E , Hawthorne F C , American Mineralogist , 78 (1993) p.746-752, The mechanism of Cl incorporation in amphibole, Sample: Cl(1), Locality: Sesia-Lanzo marble, Western Alps, Italy