Material name Fluorite
Composition CaF2
Chemical formula weight 78.07
System Cubic
Temperature (ºC) r.t.
a (Å), b (Å), c (Å) 5.4631(4) 5.4631(4) 5.4631(4) @
α (deg), β (deg), γ (deg) 90 90 90 @
Unit cell volume (Å3) 163.0
Calculated density (g/p3) 3.18
Z 4
Space group Fm3m (No.225)
atom site g x/a y/b z/c B2)
Ca 4a 1 0 0 0  -
F 8c 1 1/4 1/4 1/4  -

Reference: S. Speziale and T.S. Duffy, Physics and Chemistry of Minerals, 29, 465 (2002).