Card No: 7128       Created: 14/02/2008    Last edition: 05/05/2012

Name: EPSOMITE
Specification: [3], structure type - epsomite, analogue, at 2oK
Formula: MgSO4 · 7[HH]2O
Symmetry Class: orthorhombic
Space Group: P 2(1)2(1)2(1)
Unit Cell
Parameters:
a = 11.8971 | b = 11.9085 | c = 6.7873
Number of Formula Unit: Z = 4Unit Cell Volume, Å3: Vc = 961.60
Number of Atomic Position
per full Unit Cell
:
P/U = 108 Molar Volume, cm3/mol: Vm = 144.80
Number of Reflexes used in
Structure Determination
:

-
X-ray density, g/cm3: p = 1.80
R-factor: -MU, 1/cm: µ = 41.341
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 22.976
Theta-Interval for CPDP: T/I = 1-45