Citation: Hemon, A; Le Bail, A; Courbion, G (1993). Crystal structure approach of KCaAl~2~F~9~. A new hexagonaltungsten- bronze related structure. European Journal of Solid State Inorganic Chemistry, 30, pp. 415-426.
Formula: Al2 Ca F9 K
Chemical name:Potassium calcium dialuminium fluoride