Card No: 600       Created: 25/04/1995    Last edition: 13/01/2009

Name: BOULANGERITE
Specification: [3], structure type - boulangerite
Formula: Pb5.05[Sb3.75Bi0.28]S10.72Se0.28
Symmetry Class: monoclinic-beta
Space Group: P 2(1)/a
Unit Cell
Parameters:
a = 21.6120 | b = 23.5430 | c = 8.0840 | beta = 100.7100
Number of Formula Unit: Z = 8Unit Cell Volume, Å3: Vc = 4041.58
Number of Atomic Position
per full Unit Cell
:
P/U = 160 Molar Volume, cm3/mol: Vm = 304.30
Number of Reflexes used in
Structure Determination
:

-
X-ray density, g/cm3: p = 6.16
R-factor: -MU, 1/cm: µ = 1325.063
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 214.998
Theta-Interval for CPDP: T/I = 1-35