Card No: 10096       Created: 15/02/17    Last edition: 25/12/2018

Name: NATROJAROSITE
Specification: [10], structure type - alunite, syn, at 298oK
Formula: {Na0.57[H3O]0.36[H2O]0.07}Fe2.93[SO4]2(OH)5.70[H2O]0.30
Symmetry Class: trigonal
Space Group: R 3(-)m
Unit Cell
Parameters:
a = 7.3270 | c = 16.7320
Number of Formula Unit: Z = 3Unit Cell Volume, Å3: Vc = 777.91
Number of Atomic Position
per full Unit Cell
:
P/U = 78 Molar Volume, cm3/mol: Vm = 156.19
Number of Reflexes used in
Structure Determination
:

NR = 383
X-ray density, g/cm3: p = 3.10
R-factor: R = 0.0162MU, 1/cm: µ = 142.239
Wave Length for Calculated
Powder Diffraction Patterns
:
Co=1.78892Mass attenuation coefficient,
cm2/g
:
µ/p = 45.871
Theta-Interval for CPDP: T/I = 1-45