Card No: 7533       Created: 05/10/2009    Last edition: 28/07/2016

Name: AENIGMATITE
Specification: [4], structure type - aenigmatite
Formula: Na2Fe5TiSi6O20
Symmetry Class: triclinic
Space Group: P 1(-)
Unit Cell
Parameters:
a = 10.4150 | b = 10.8400 | c = 8.9310 | alpha = 105.1000 | beta = 96.6000 | gamma = 125.4000
Number of Formula Unit: Z = 2Unit Cell Volume, Å3: Vc = 746.78
Number of Atomic Position
per full Unit Cell
:
P/U = 68 Molar Volume, cm3/mol: Vm = 224.91
Number of Reflexes used in
Structure Determination
:

-
X-ray density, g/cm3: p = 3.81
R-factor: -MU, 1/cm: µ = 238.775
Wave Length for Calculated
Powder Diffraction Patterns
:
Co=1.78892Mass attenuation coefficient,
cm2/g
:
µ/p = 62.752
Theta-Interval for CPDP: T/I = 1-45