Card No: 8313       Created: 19/05/11    Last edition: 27/04/2017

Name: PYRRHOTITE
Specification: [4], 6C
Formula: (Fe,Ni)12S12
Symmetry Class: monoclinic-beta
Space Group: C c
Unit Cell
Parameters:
a = 6.8973 | b = 11.9540 | c = 17.6020 | beta = 101.3000
Number of Formula Unit: Z = 4Unit Cell Volume, Å3: Vc = 1423.15
Number of Atomic Position
per full Unit Cell
:
P/U = 96 Molar Volume, cm3/mol: Vm = 214.30
Number of Reflexes used in
Structure Determination
:

-
X-ray density, g/cm3: p = 4.94
R-factor: -MU, 1/cm: µ = 414.826
Wave Length for Calculated
Powder Diffraction Patterns
:
Co=1.78892Mass attenuation coefficient,
cm2/g
:
µ/p = 84.054
Theta-Interval for CPDP: T/I = 1-45