Fluorite Speziale S, Duffy T S Physics and Chemistry of Minerals 29 (2002) 465-472 Single-crystal elastic constants of fluorite (CaF2) to 9.3 GPa Sample: P = 6.95 GPa _database_code_amcsd 0008651 5.2991 5.2991 5.2991 90 90 90 Fm3m atom x y z Ca 0 0 0 F .25 .25 .25