Card No: 991       Created: 22/06/1998    Last edition: 10/02/2017

Name: COOKEITE
Specification: [1]
Formula: Al2[Si3.042Al0.958]O10[Al2.017Li0.852(Cr,Mg,Fe)0.02](OH)8
Symmetry Class: monoclinic-beta
Space Group: C c
Unit Cell
Parameters:
a = 5.1580 | b = 8.9400 | c = 28.4990 | beta = 96.6000
Number of Formula Unit: Z = 4Unit Cell Volume, Å3: Vc = 1305.45
Number of Atomic Position
per full Unit Cell
:
P/U = 140 Molar Volume, cm3/mol: Vm = 196.58
Number of Reflexes used in
Structure Determination
:

NR = 5828
X-ray density, g/cm3: p = 2.69
R-factor: R = 0.0710MU, 1/cm: µ = 72.704
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 27.072
Theta-Interval for CPDP: T/I = 1-45