Card No: 3244       Created: 21/08/1990    Last edition: 18/09/2014

Name: FORSTERITE
Specification: [25], alpha, structure type - olivine, Co-analogue
Formula: Co2SiO4
Symmetry Class: orthorhombic
Space Group: P bnm
Unit Cell
Parameters:
a = 4.7820 | b = 10.3020 | c = 6.0030
Number of Formula Unit: Z = 4Unit Cell Volume, Å3: Vc = 295.73
Number of Atomic Position
per full Unit Cell
:
P/U = 28 Molar Volume, cm3/mol: Vm = 44.53
Number of Reflexes used in
Structure Determination
:

NR = 501
X-ray density, g/cm3: p = 4.71
R-factor: R = 0.0350MU, 1/cm: µ = 246.108
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