Card No: 3260       Created: 14/03/1994    Last edition: 13/01/2009

Name: FORSTERITE
Specification: [39], structure type - olivine
Formula: (Mg, Fe)2SiO4
Symmetry Class: orthorhombic
Space Group: P nma
Unit Cell
Parameters:
a = 10.2520 | b = 6.0120 | c = 4.7730
Number of Formula Unit: Z = 4Unit Cell Volume, Å3: Vc = 294.18
Number of Atomic Position
per full Unit Cell
:
P/U = 28 Molar Volume, cm3/mol: Vm = 44.30
Number of Reflexes used in
Structure Determination
:

NR = 955
X-ray density, g/cm3: p = 3.37
R-factor: R = 0.0170MU, 1/cm: µ = 172.541
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 51.168
Theta-Interval for CPDP: T/I = 1-45