Card No: 8884       Created: 26/06/13    Last edition: 21/10/2016

Name: PYROSMALITE-(Fe)
Specification: [1]
Formula: Fe8Si6O15(OH,Cl)10
Symmetry Class: trigonal
Space Group: P 3(-)m1
Unit Cell
Parameters:
a = 13.3165 | c = 7.0845
Number of Formula Unit: Z = 2Unit Cell Volume, Å3: Vc = 1087.98
Number of Atomic Position
per full Unit Cell
:
P/U = 98 Molar Volume, cm3/mol: Vm = 327.66
Number of Reflexes used in
Structure Determination
:

-
X-ray density, g/cm3: p = 3.28
R-factor: -MU, 1/cm: µ = 173.307
Wave Length for Calculated
Powder Diffraction Patterns
:
Co=1.78892Mass attenuation coefficient,
cm2/g
:
µ/p = 52.851
Theta-Interval for CPDP: T/I = 1-45