AM_Potassic-chlorohastingsite_1 Formula: Na.5 K.54 Mg1.06 Fe3.58 Al2.18 Ti.02 Ca1.86 Si6.16 O24.88 (Cl.98 F.14 H.88) Name: Potassic-chlorohastingsite Unit cell: 9.922 18.219 5.36 90.0 104.81 90.0 , V=936.73 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(2), Locality: Sesia-Lanzo marble, Western Alps, Italy