Card No: 8492       Created: 25/05/12    Last edition: 24/05/2015

Name: JOHNSENITE-(Ce)
Specification: [1], structure type - eudialyte, DF
Formula: Na12(Ce,REE,Sr)3Ca6Mn3Zr3W[Si25O73][CO3,(OH),Cl)]2
Symmetry Class: trigonal
Space Group: R 3m
Unit Cell
Parameters:
a = 14.2675 | c = 30.0369
Number of Formula Unit: Z = 3Unit Cell Volume, Å3: Vc = 5295.19
Number of Atomic Position
per full Unit Cell
:
P/U = 423 Molar Volume, cm3/mol: Vm = 1063.16
Number of Reflexes used in
Structure Determination
:

-
X-ray density, g/cm3: p = 3.22
R-factor: R = 0.0400MU, 1/cm: µ = 304.743
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 94.756
Theta-Interval for CPDP: T/I = 1-45