Card No: 10068       Created: 27/03/17    Last edition: 03/07/2017

Name: JACOBSITE
Specification: [4], structure type - spinel
Formula: (Mn,Mg,Fe)(Fe,Mg,Mn)2O4
Symmetry Class: cubic
Space Group: *F d3m
Unit Cell
Parameters:
a = 8.4956
Number of Formula Unit: Z = 8Unit Cell Volume, Å3: Vc = 613.17
Number of Atomic Position
per full Unit Cell
:
P/U = 56 Molar Volume, cm3/mol: Vm = 46.17
Number of Reflexes used in
Structure Determination
:

-
X-ray density, g/cm3: p = 4.91
R-factor: -MU, 1/cm: µ = 156.837
Wave Length for Calculated
Powder Diffraction Patterns
:
Co=1.78892Mass attenuation coefficient,
cm2/g
:
µ/p = 31.962
Theta-Interval for CPDP: T/I = 1-45