AM_Apophyllite-(KOH) Formula: K Ca4 Si8 O29 H17 Name: Apophyllite-(KOH) Unit cell: 8.979 8.979 15.83 90.0 90.0 90.0 , V=1276.25 Space group: P4/MNC (128)

Rouse R C , Peacor D R , Dunn P J , American Mineralogist , 63 (1978) p.196-202, Hydroxyapophyllite, a new mineral, and a redefinition of the apophyllite group, II. Crystal structure, Note: sample is from Kimberley, South Africa