Card No: 1583       Created: 04/05/1988    Last edition: 13/01/2009

Name: FORSTERITE
Specification: [1], structure type - olivine
Formula: Mg2SiO4
Symmetry Class: orthorhombic
Space Group: P bnm
Unit Cell
Parameters:
a = 4.7530 | b = 10.1900 | c = 5.9780
Number of Formula Unit: Z = 4Unit Cell Volume, Å3: Vc = 289.53
Number of Atomic Position
per full Unit Cell
:
P/U = 28 Molar Volume, cm3/mol: Vm = 43.60
Number of Reflexes used in
Structure Determination
:

-
X-ray density, g/cm3: p = 3.23
R-factor: -MU, 1/cm: µ = 98.942
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 30.665
Theta-Interval for CPDP: T/I = 1-45