Card No: 3281       Created: 03/11/1997    Last edition: 18/09/2014

Name: FORSTERITE
Specification: [60], structure type - olivine, Co-analogue
Formula: Co2SiO4
Symmetry Class: orthorhombic
Space Group: P bnm
Unit Cell
Parameters:
a = 4.7825 | b = 10.3040 | c = 6.0041
Number of Formula Unit: Z = 4Unit Cell Volume, Å3: Vc = 295.88
Number of Atomic Position
per full Unit Cell
:
P/U = 28 Molar Volume, cm3/mol: Vm = 44.55
Number of Reflexes used in
Structure Determination
:

-
X-ray density, g/cm3: p = 4.71
R-factor: R = 0.0504MU, 1/cm: µ = 245.989
Wave Length for Calculated
Powder Diffraction Patterns
:
Co=1.78892Mass attenuation coefficient,
cm2/g
:
µ/p = 52.209
Theta-Interval for CPDP: T/I = 1-45