Card No: 329       Created: 17/11/1994    Last edition: 29/11/2017

Name: ARMENITE
Specification: [2], structure type - armenite
Formula: BaCa2Al6Si9O30 · 2H2O
Symmetry Class: orthorhombic
Space Group: P nna
Unit Cell
Parameters:
a = 13.8740 | b = 18.6800 | c = 10.6970
Number of Formula Unit: Z = 4Unit Cell Volume, Å3: Vc = 2772.30
Number of Atomic Position
per full Unit Cell
:
P/U = 200 Molar Volume, cm3/mol: Vm = 417.47
Number of Reflexes used in
Structure Determination
:

NR = 1510
X-ray density, g/cm3: p = 2.75
R-factor: R = 0.0510MU, 1/cm: µ = 209.868
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 76.280
Theta-Interval for CPDP: T/I = 1-45