AM_Apophyllite-(KF) Formula: (K.84 Na.16) Ca4 Si8 O28 F H14 Name: Apophyllite-(KF) Unit cell: 8.963 8.963 15.804 90.0 90.0 90.0 , V=1269.62 Space group: P4/MNC (128)

Colville A A , Anderson C P , Black P M , American Mineralogist , 56 (1971) p.1222-1233, Refinement of the crystal structure of apophyllite I. X-ray diffraction and, physical properties