Card No: 788       Created: 11/09/1990    Last edition: 31/08/2021

Name: CAYSICHITE-(Y)
Specification: [1]
Formula: Y4[Ca0.75Gd0.25]4(OH)[H2O]5[Si8O20][CO3]6 · 2H2O
Symmetry Class: orthorhombic
Space Group: C cm2(1)
Unit Cell
Parameters:
a = 13.2700 | b = 13.9100 | c = 9.7300
Number of Formula Unit: Z = 2Unit Cell Volume, Å3: Vc = 1796.02
Number of Atomic Position
per full Unit Cell
:
P/U = 136 Molar Volume, cm3/mol: Vm = 540.90
Number of Reflexes used in
Structure Determination
:

NR = 959
X-ray density, g/cm3: p = 3.08
R-factor: R = 0.0600MU, 1/cm: µ = 289.558
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 94.033
Theta-Interval for CPDP: T/I = 1-45