Card No: 12041       Created: 22/03/24    Last edition: 27/03/2026

Name: LOMBARDOITE
Specification: [2], structure type - brackebuschite
Formula: Ba2Mn3+[AsO4]2(OH)
Symmetry Class: monoclinic-beta
Space Group: P 2(1)/m
Unit Cell
Parameters:
a = 7.8636 | b = 6.1342 | c = 9.1197 | beta = 112.7000
Number of Formula Unit: Z = 2Unit Cell Volume, Å3: Vc = 405.95
Number of Atomic Position
per full Unit Cell
:
P/U = 30 Molar Volume, cm3/mol: Vm = 122.26
Number of Reflexes used in
Structure Determination
:

NR = 2628
X-ray density, g/cm3: p = 4.90
R-factor: R = 0.0228MU, 1/cm: µ = 1163.659
Wave Length for Calculated
Powder Diffraction Patterns
:
Co=1.78892Mass attenuation coefficient,
cm2/g
:
µ/p = 237.293
Theta-Interval for CPDP: T/I = 1-45