Card No: 8942       Created: 25/03/14    Last edition: 16/03/2015

Name: CERCHIARAITE-(Fe)
Specification: [1], DF
Formula: Ba4(Fe,Al)4O3(OH)3[Si6O15(OH)4]Cl
Symmetry Class: tetragonal
Space Group: I 4/mmm
Unit Cell
Parameters:
a = 14.3554 | c = 6.0065
Number of Formula Unit: Z = 2Unit Cell Volume, Å3: Vc = 1237.80
Number of Atomic Position
per full Unit Cell
:
P/U = 138 Molar Volume, cm3/mol: Vm = 372.79
Number of Reflexes used in
Structure Determination
:

-
X-ray density, g/cm3: p = 3.76
R-factor: -MU, 1/cm: µ = 812.884
Wave Length for Calculated
Powder Diffraction Patterns
:
Co=1.78892Mass attenuation coefficient,
cm2/g
:
µ/p = 216.343
Theta-Interval for CPDP: T/I = 1-45