Card No: 2491       Created: 17/03/1998    Last edition: 13/01/2009

Name: LAUMONTITE
Specification: [5], ZL
Formula: Ca2.35K1.59Na1.24Fe0.03Al8.19Si15.87O48 · 13.93H2O
Symmetry Class: monoclinic-beta
Space Group: P 2/a
Unit Cell
Parameters:
a = 14.5560 | b = 13.2060 | c = 7.5130 | beta = 110.7500
Number of Formula Unit: Z = 1Unit Cell Volume, Å3: Vc = 1350.52
Number of Atomic Position
per full Unit Cell
:
P/U = 98 Molar Volume, cm3/mol: Vm = 813.47
Number of Reflexes used in
Structure Determination
:

NR = 3952
X-ray density, g/cm3: p = 2.14
R-factor: R = 0.0470MU, 1/cm: µ = 88.470
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 41.358
Theta-Interval for CPDP: T/I = 1-45