Card No: 3278       Created: 10/11/1997    Last edition: 13/01/2009

Name: FORSTERITE
Specification: [57], structure type - olivine, Co-Mg-analogue
Formula: Co2SiO4
Symmetry Class: orthorhombic
Space Group: P bnm
Unit Cell
Parameters:
a = 4.7633 | b = 10.2290 | c = 5.9874
Number of Formula Unit: Z = 4Unit Cell Volume, Å3: Vc = 291.73
Number of Atomic Position
per full Unit Cell
:
P/U = 28 Molar Volume, cm3/mol: Vm = 43.93
Number of Reflexes used in
Structure Determination
:

-
X-ray density, g/cm3: p = 3.59
R-factor: R = 0.0442MU, 1/cm: µ = 175.808
Wave Length for Calculated
Powder Diffraction Patterns
:
Co=1.78892Mass attenuation coefficient,
cm2/g
:
µ/p = 48.911
Theta-Interval for CPDP: T/I = 1-45