Card No: 2047       Created: 06/10/1997    Last edition: 22/04/2022

Name: HUMBERSTONITE
Specification: [1]
Formula: K3Na7Mg2[SO4]6[NO3]2 · 6H2O
Symmetry Class: trigonal
Space Group: R 3(-)
Unit Cell
Parameters:
a = 10.9055 | c = 24.3949
Number of Formula Unit: Z = 3Unit Cell Volume, Å3: Vc = 2512.59
Number of Atomic Position
per full Unit Cell
:
P/U = 204 Molar Volume, cm3/mol: Vm = 504.47
Number of Reflexes used in
Structure Determination
:

-
X-ray density, g/cm3: p = 2.25
R-factor: R = 0.0910MU, 1/cm: µ = 94.091
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 41.816
Theta-Interval for CPDP: T/I = 1-45