Card No: 5513       Created: 11/07/2003    Last edition: 28/07/2016

Name: ANDRADITE
Specification: [8], structure type - garnet, OH
Formula: [Ca2.78(Mg,Mn,Fe)0.22][Fe1.24(Al,Ti)0.76][Si2.85Fe0.08](O,OH)12
Symmetry Class: cubic
Space Group: I a3d
Unit Cell
Parameters:
a = 12.0140
Number of Formula Unit: Z = 8Unit Cell Volume, Å3: Vc = 1734.06
Number of Atomic Position
per full Unit Cell
:
P/U = 160 Molar Volume, cm3/mol: Vm = 130.56
Number of Reflexes used in
Structure Determination
:

-
X-ray density, g/cm3: p = 3.77
R-factor: -MU, 1/cm: µ = 362.216
Wave Length for Calculated
Powder Diffraction Patterns
:
Co=1.78892Mass attenuation coefficient,
cm2/g
:
µ/p = 96.139
Theta-Interval for CPDP: T/I = 1-45