Card No: 5607       Created: 28/05/2003    Last edition: 13/01/2009

Name: FREIBERGITE
Specification: [4], structure type - tennantite-tetrahedrite, Ag
Formula: Cu6.41Fe0.7Zn1.35Ag3.64Sb3.91As0.06S12.93
Symmetry Class: cubic
Space Group: I 4(-)3m
Unit Cell
Parameters:
a = 10.5760
Number of Formula Unit: Z = 2Unit Cell Volume, Å3: Vc = 1182.94
Number of Atomic Position
per full Unit Cell
:
P/U = 58 Molar Volume, cm3/mol: Vm = 356.27
Number of Reflexes used in
Structure Determination
:

NR = 341
X-ray density, g/cm3: p = 5.18
R-factor: R = 0.0450MU, 1/cm: µ = 831.101
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 160.490
Theta-Interval for CPDP: T/I = 1-45