Card No: 3277       Created: 04/11/1997    Last edition: 13/01/2009

Name: FORSTERITE
Specification: [56], structure type - olivine, Co-Mg-analogue
Formula: Co2SiO4
Symmetry Class: orthorhombic
Space Group: P bnm
Unit Cell
Parameters:
a = 4.7713 | b = 10.2533 | c = 5.9911
Number of Formula Unit: Z = 4Unit Cell Volume, Å3: Vc = 293.09
Number of Atomic Position
per full Unit Cell
:
P/U = 28 Molar Volume, cm3/mol: Vm = 44.14
Number of Reflexes used in
Structure Determination
:

-
X-ray density, g/cm3: p = 4.23
R-factor: R = 0.0495MU, 1/cm: µ = 215.716
Wave Length for Calculated
Powder Diffraction Patterns
:
Co=1.78892Mass attenuation coefficient,
cm2/g
:
µ/p = 50.969
Theta-Interval for CPDP: T/I = 1-45