Card No: 248       Created: 18/02/1993    Last edition: 10/09/2014

Name: ANORTHITE
Specification: [6], DF
Formula: CaAl2Si2O8
Symmetry Class: monoclinic-beta
Space Group: P 2(1)
Unit Cell
Parameters:
a = 8.2280 | b = 8.6210 | c = 4.8270 | beta = 90.0000
Number of Formula Unit: Z = 2Unit Cell Volume, Å3: Vc = 342.40
Number of Atomic Position
per full Unit Cell
:
P/U = 28 Molar Volume, cm3/mol: Vm = 103.12
Number of Reflexes used in
Structure Determination
:

-
X-ray density, g/cm3: p = 2.68
R-factor: R = 0.1200MU, 1/cm: µ = 133.589
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 49.758
Theta-Interval for CPDP: T/I = 1-45