Card No: 6772       Created: 24/05/07    Last edition: 13/01/2013

Name: ANDRADITE
Specification: [18], structure type - garnet, Sc, syn
Formula: Ca3[Fe0.8Sc0.2]2Si3O12
Symmetry Class: cubic
Space Group: I a3d
Unit Cell
Parameters:
a = 12.0938
Number of Formula Unit: Z = 8Unit Cell Volume, Å3: Vc = 1768.84
Number of Atomic Position
per full Unit Cell
:
P/U = 160 Molar Volume, cm3/mol: Vm = 133.18
Number of Reflexes used in
Structure Determination
:

-
X-ray density, g/cm3: p = 3.78
R-factor: -MU, 1/cm: µ = 376.323
Wave Length for Calculated
Powder Diffraction Patterns
:
Co=1.78892Mass attenuation coefficient,
cm2/g
:
µ/p = 99.488
Theta-Interval for CPDP: T/I = 1-45