Card No: 318       Created: 19/04/2000    Last edition: 13/01/2009

Name: ARGYRODITE
Specification: [2], beta, analogue
Formula: Ag7PSe6
Symmetry Class: cubic
Space Group: P 2(1)3
Unit Cell
Parameters:
a = 10.7720
Number of Formula Unit: Z = 4Unit Cell Volume, Å3: Vc = 1249.94
Number of Atomic Position
per full Unit Cell
:
P/U = 56 Molar Volume, cm3/mol: Vm = 188.22
Number of Reflexes used in
Structure Determination
:

NR = 1125
X-ray density, g/cm3: p = 6.69
R-factor: R = 0.0267MU, 1/cm: µ = 1116.654
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 166.853
Theta-Interval for CPDP: T/I = 1-45