Citation: Taylor, W H; Naray-Szabo, S (1931). The Structure of Apophyllite. Zeitschrift fuer Kristallographie, Kristallgeometrie, Kristallphysik,Kristallchemie (-144,1977), 77, pp. 146-159.
Formula: Ca4 F H16 K O28 Si8
Chemical name:Calcium potassium silicate hydrate *