Card No: 8849       Created: 12/07/13    Last edition: 30/07/2015

Name: LANGBANSHYTTANITE
Specification: [1]
Formula: Pb2(Mn,Mg,Fe)3[AsO4]2(OH)4 · 6H2O
Symmetry Class: triclinic
Space Group: P 1(-)
Unit Cell
Parameters:
a = 5.0528 | b = 5.7671 | c = 14.6170 | alpha = 85.7000 | beta = 82.0000 | gamma = 88.7000
Number of Formula Unit: Z = 1Unit Cell Volume, Å3: Vc = 420.58
Number of Atomic Position
per full Unit Cell
:
P/U = 25 Molar Volume, cm3/mol: Vm = 253.33
Number of Reflexes used in
Structure Determination
:

-
X-ray density, g/cm3: p = 3.96
R-factor: -MU, 1/cm: µ = 649.064
Wave Length for Calculated
Powder Diffraction Patterns
:
Co=1.78892Mass attenuation coefficient,
cm2/g
:
µ/p = 164.033
Theta-Interval for CPDP: T/I = 1-45