Card No: 2366       Created: 11/04/1994    Last edition: 13/01/2009

Name: KOKTAITE
Specification: [1]
Formula: [NH4]2Ca[SO4]2 · H2O
Symmetry Class: monoclinic-beta
Space Group: P 2(1)/m
Unit Cell
Parameters:
a = 6.3400 | b = 7.1500 | c = 10.1700 | beta = 102.7500
Number of Formula Unit: Z = 2Unit Cell Volume, Å3: Vc = 449.65
Number of Atomic Position
per full Unit Cell
:
P/U = 32 Molar Volume, cm3/mol: Vm = 135.42
Number of Reflexes used in
Structure Determination
:

-
X-ray density, g/cm3: p = 2.11
R-factor: -MU, 1/cm: µ = 104.355
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 49.368
Theta-Interval for CPDP: T/I = 1-45