Card No: 1585       Created: 25/10/1990    Last edition: 20/06/2018

Name: FORSTERITE
Specification: [3], structure type - olivine, Mn
Formula: Mg1.028Mn0.964Ca0.006Fe0.002SiO4
Symmetry Class: orthorhombic
Space Group: P bnm
Unit Cell
Parameters:
a = 4.7940 | b = 10.4910 | c = 6.1230
Number of Formula Unit: Z = 4Unit Cell Volume, Å3: Vc = 307.95
Number of Atomic Position
per full Unit Cell
:
P/U = 28 Molar Volume, cm3/mol: Vm = 46.37
Number of Reflexes used in
Structure Determination
:

NR = 731
X-ray density, g/cm3: p = 3.67
R-factor: R = 0.0290MU, 1/cm: µ = 113.181
Wave Length for Calculated
Powder Diffraction Patterns
:
Co=1.78892Mass attenuation coefficient,
cm2/g
:
µ/p = 30.803
Theta-Interval for CPDP: T/I = 1-45