Card No: 4905       Created: 11/01/1991    Last edition: 20/02/2014

Name: TYCHITE
Specification: [2], structure type - tychite
Formula: Na6Mg2[SO4][CO3]4
Symmetry Class: cubic
Space Group: F d3
Unit Cell
Parameters:
a = 13.9300
Number of Formula Unit: Z = 8Unit Cell Volume, Å3: Vc = 2703.05
Number of Atomic Position
per full Unit Cell
:
P/U = 232 Molar Volume, cm3/mol: Vm = 203.52
Number of Reflexes used in
Structure Determination
:

-
X-ray density, g/cm3: p = 2.57
R-factor: -MU, 1/cm: µ = 59.200
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 23.056
Theta-Interval for CPDP: T/I = 1-45