Citation: Lupulescu, M. V.; Rakovan, J.; Dyar, M. D.; Robinson, G. W.; Hughes, J. M. (2009). Fluoro-potassichastingsite from the Greenwood mine, Orange County, New York: A new end-member calcic amphibole. The Canadian Mineralogist, 47, pp. 909-916.
Formula: Al0.468 Ca1.902 F1.98 Fe2.818 K0.746 Mg2.182 O22.02 Si7.492
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Al16 F4 Fe10 Mg10 O48 Si16 (Al8 F2 Fe5 Mg5 O24 Si8)
Multiplicity: 1