Card No: 8435       Created: 4/04/12    Last edition: 11/03/2015

Name: CALCITE
Specification: [18], structure type - calcite, at 702oC, 101 kPa
Formula: CaCO3
Symmetry Class: trigonal
Space Group: R 3(-)c
Unit Cell
Parameters:
a = 4.9742 | c = 17.4676
Number of Formula Unit: Z = 6Unit Cell Volume, Å3: Vc = 374.29
Number of Atomic Position
per full Unit Cell
:
P/U = 30 Molar Volume, cm3/mol: Vm = 37.57
Number of Reflexes used in
Structure Determination
:

-
X-ray density, g/cm3: p = 2.66
R-factor: -MU, 1/cm: µ = 188.938
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 70.939
Theta-Interval for CPDP: T/I = 1-45