Card No: 8622       Created: 8/10/12    Last edition: 15/06/2013

Name: VILLIAUMITE
Specification: [4], structure type - halite, syn, at 254oC
Formula: NaF
Symmetry Class: cubic
Space Group: F m3m
Unit Cell
Parameters:
a = 4.6726
Number of Formula Unit: Z = 4Unit Cell Volume, Å3: Vc = 102.02
Number of Atomic Position
per full Unit Cell
:
P/U = 8 Molar Volume, cm3/mol: Vm = 15.36
Number of Reflexes used in
Structure Determination
:

-
X-ray density, g/cm3: p = 2.73
R-factor: -MU, 1/cm: µ = 65.319
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 23.901
Theta-Interval for CPDP: T/I = 1-45