Card No: 8400       Created: 4/04/12    Last edition: 09/03/2015

Name: ARAGONITE
Specification: [7], structure type - aragonite, at 258oC, 101 kPa
Formula: CaCO3
Symmetry Class: orthorhombic
Space Group: P mcn
Unit Cell
Parameters:
a = 4.9664 | b = 8.0126 | c = 5.7898
Number of Formula Unit: Z = 4Unit Cell Volume, Å3: Vc = 230.40
Number of Atomic Position
per full Unit Cell
:
P/U = 20 Molar Volume, cm3/mol: Vm = 34.69
Number of Reflexes used in
Structure Determination
:

-
X-ray density, g/cm3: p = 2.88
R-factor: -MU, 1/cm: µ = 204.625
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