Card No: 11946       Created: 29/02/24    Last edition: 27/03/2026

Name: BOUSSINGAULTITE
Specification: [2], structure type - picromerite
Formula: [NH4]2Mg[SO4]2 · 6H2O
Symmetry Class: monoclinic-beta
Space Group: P 2(1)/a
Unit Cell
Parameters:
a = 9.2173 | b = 12.4215 | c = 6.2556 | beta = 106.8000
Number of Formula Unit: Z = 2Unit Cell Volume, Å3: Vc = 685.83
Number of Atomic Position
per full Unit Cell
:
P/U = 78 Molar Volume, cm3/mol: Vm = 206.55
Number of Reflexes used in
Structure Determination
:

NR = 3788
X-ray density, g/cm3: p = 1.79
R-factor: R = 0.0456MU, 1/cm: µ = 48.655
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 27.181
Theta-Interval for CPDP: T/I = 1-45