Card No: 12365       Created: 3/10/25    Last edition: 05/04/2026

Name: MCBIRNEYITE
Specification: [4], structure type - stranskiite, As-rich
Formula: Cu3[(As,V)O4]2
Symmetry Class: triclinic
Space Group: P 1(-)
Unit Cell
Parameters:
a = 5.0701 | b = 5.4047 | c = 6.3910 | alpha = 70.1000 | beta = 86.8000 | gamma = 68.4000
Number of Formula Unit: Z = 1Unit Cell Volume, Å3: Vc = 152.61
Number of Atomic Position
per full Unit Cell
:
P/U = 13 Molar Volume, cm3/mol: Vm = 91.92
Number of Reflexes used in
Structure Determination
:

NR = 662
X-ray density, g/cm3: p = 4.92
R-factor: R = 0.0489MU, 1/cm: µ = 302.857
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 61.555
Theta-Interval for CPDP: T/I = 1-45