Card No: 12361       Created: 22/09/25    Last edition: 05/04/2026

Name: LEIGHTONITE
Specification: [2], DN
Formula: K2Ca2Cu[SO4]4 · 2H2O
Symmetry Class: monoclinic-beta
Space Group: C 2/c
Unit Cell
Parameters:
a = 11.7340 | b = 7.5950 | c = 10.1760 | beta = 124.8000
Number of Formula Unit: Z = 2Unit Cell Volume, Å3: Vc = 744.23
Number of Atomic Position
per full Unit Cell
:
P/U = 60 Molar Volume, cm3/mol: Vm = 224.14
Number of Reflexes used in
Structure Determination
:

NR = 391
X-ray density, g/cm3: p = 2.86
R-factor: R = 0.0650MU, 1/cm: µ = 188.761
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 65.893
Theta-Interval for CPDP: T/I = 1-45