Card No: 1216       Created: 12/01/1993    Last edition: 13/01/2009

Name: DIOPSIDE
Specification: [42], "distorted" structure type - diopside, Di(80)En(20), at 400oC, DF
Formula: Ca0.8Mg1.2Si2O6
Symmetry Class: monoclinic-beta
Space Group: C 2/c
Unit Cell
Parameters:
a = 9.7650 | b = 8.9630 | c = 5.2620 | beta = 106.5800
Number of Formula Unit: Z = 4Unit Cell Volume, Å3: Vc = 441.40
Number of Atomic Position
per full Unit Cell
:
P/U = 44 Molar Volume, cm3/mol: Vm = 66.47
Number of Reflexes used in
Structure Determination
:

NR = 871
X-ray density, g/cm3: p = 3.21
R-factor: R = 0.0470MU, 1/cm: µ = 162.888
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 50.742
Theta-Interval for CPDP: T/I = 1-45