Card No: 789       Created: 09/03/1995    Last edition: 27/08/2021

Name: CECHITE
Specification: [1], structure type - descloizite
Formula: Pb(Fe2+,Mn2+)[VO4](OH)
Symmetry Class: orthorhombic
Space Group: P nam
Unit Cell
Parameters:
a = 7.6050 | b = 9.4350 | c = 6.0990
Number of Formula Unit: Z = 4Unit Cell Volume, Å3: Vc = 437.62
Number of Atomic Position
per full Unit Cell
:
P/U = 32 Molar Volume, cm3/mol: Vm = 65.90
Number of Reflexes used in
Structure Determination
:

NR = 931
X-ray density, g/cm3: p = 5.98
R-factor: R = 0.0430MU, 1/cm: µ = 1179.719
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 197.439
Theta-Interval for CPDP: T/I = 1-45