Card No: 7491       Created: 25/12/2008    Last edition: 08/01/2013

Name: SCORODITE
Specification: [3], structure type - variscite, syn
Formula: FeAsO4 · 2H2O
Symmetry Class: orthorhombic
Space Group: P bca
Unit Cell
Parameters:
a = 8.9420 | b = 10.0750 | c = 10.3390
Number of Formula Unit: Z = 8Unit Cell Volume, Å3: Vc = 931.45
Number of Atomic Position
per full Unit Cell
:
P/U = 96 Molar Volume, cm3/mol: Vm = 70.13
Number of Reflexes used in
Structure Determination
:

-
X-ray density, g/cm3: p = 3.35
R-factor: -MU, 1/cm: µ = 204.181
Wave Length for Calculated
Powder Diffraction Patterns
:
Co=1.78892Mass attenuation coefficient,
cm2/g
:
µ/p = 60.986
Theta-Interval for CPDP: T/I = 1-45