Card No: 2685       Created: 17/04/1992    Last edition: 13/01/2009

Name: MAGNESIOCHROMITE
Specification: [1], structure type - spinel
Formula: MgCr2O4
Symmetry Class: cubic
Space Group: F d3m
Unit Cell
Parameters:
a = 8.3330
Number of Formula Unit: Z = 8Unit Cell Volume, Å3: Vc = 578.63
Number of Atomic Position
per full Unit Cell
:
P/U = 56 Molar Volume, cm3/mol: Vm = 43.57
Number of Reflexes used in
Structure Determination
:

-
X-ray density, g/cm3: p = 4.41
R-factor: -MU, 1/cm: µ = 968.658
Wave Length for Calculated
Powder Diffraction Patterns
:
Co=1.78892Mass attenuation coefficient,
cm2/g
:
µ/p = 219.489
Theta-Interval for CPDP: T/I = 1-45