Card No: 11120       Created: 24/03/20    Last edition: 16/07/2020

Name: BERZELIANITE
Specification: [2], structure type - defective fluorite, syn, at 300oK, DF
Formula: Cu2Se
Symmetry Class: cubic
Space Group: F m3m
Unit Cell
Parameters:
a = 5.6940
Number of Formula Unit: Z = 4Unit Cell Volume, Å3: Vc = 184.61
Number of Atomic Position
per full Unit Cell
:
P/U = 44 Molar Volume, cm3/mol: Vm = 27.80
Number of Reflexes used in
Structure Determination
:

-
X-ray density, g/cm3: p = 7.41
R-factor: -MU, 1/cm: µ = 501.397
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 67.653
Theta-Interval for CPDP: T/I = 1-45