AM_Fluoro-potassichastingsite Formula: K.746 Ca1.902 (Fe2.818 Mg2.182) Si7.492 Al.468 O22.02 F1.98 Name: Fluoro-potassichastingsite Unit cell: 9.948 18.1777 5.3302 90.0 105.14 90.0 , V=930.41 Space group: C12/M1 (12)

Lupulescu M V , Rakovan J , Dyar M D , Robinson G W , Hughes J M , The Canadian Mineralogist , 47 (2009) p.909-916, Fluoro-potassichastingsite from the Greenwood mine, Orange County, New York:, A new end-member calcic amphibole, Locality: the Greenwood mine, Orange County, New York, USA