Card No: 247       Created: 24/02/1998    Last edition: 10/09/2014

Name: ANORTHITE
Specification: [5], Mn-analogue, DF
Formula: MnAl2Si2O8
Symmetry Class: triclinic
Space Group: C 1(-)
Unit Cell
Parameters:
a = 8.1310 | b = 12.8470 | c = 7.0690 | alpha = 94.0300 | beta = 115.9000 | gamma = 90.7200
Number of Formula Unit: Z = 4Unit Cell Volume, Å3: Vc = 661.84
Number of Atomic Position
per full Unit Cell
:
P/U = 64 Molar Volume, cm3/mol: Vm = 99.66
Number of Reflexes used in
Structure Determination
:

NR = 2528
X-ray density, g/cm3: p = 3.19
R-factor: R = 0.0390MU, 1/cm: µ = 226.217
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 70.814
Theta-Interval for CPDP: T/I = 1-45