Card No: 9570       Created: 5/06/15    Last edition: 15/01/2016

Name: THERASIAITE
Specification: [1], DF
Formula: [NH4]3KNa2Fe2+Fe3+[SO4]3Cl5
Symmetry Class: monoclinic-beta
Space Group: C c
Unit Cell
Parameters:
a = 18.2840 | b = 12.0730 | c = 9.5350 | beta = 108.1000
Number of Formula Unit: Z = 4Unit Cell Volume, Å3: Vc = 2000.63
Number of Atomic Position
per full Unit Cell
:
P/U = 124 Molar Volume, cm3/mol: Vm = 301.26
Number of Reflexes used in
Structure Determination
:

-
X-ray density, g/cm3: p = 2.43
R-factor: -MU, 1/cm: µ = 226.425
Wave Length for Calculated
Powder Diffraction Patterns
:
Co=1.78892Mass attenuation coefficient,
cm2/g
:
µ/p = 93.195
Theta-Interval for CPDP: T/I = 1-45