Card No: 4681       Created: 27/05/1988    Last edition: 13/01/2009

Name: TEPHROITE
Specification: [1], structure type - olivine
Formula: Mn2SiO4
Symmetry Class: orthorhombic
Space Group: P bnm
Unit Cell
Parameters:
a = 4.9020 | b = 10.5960 | c = 6.2570
Number of Formula Unit: Z = 4Unit Cell Volume, Å3: Vc = 325.00
Number of Atomic Position
per full Unit Cell
:
P/U = 28 Molar Volume, cm3/mol: Vm = 48.94
Number of Reflexes used in
Structure Determination
:

-
X-ray density, g/cm3: p = 4.13
R-factor: -MU, 1/cm: µ = 689.595
Wave Length for Calculated
Powder Diffraction Patterns
:
Cu=1.54056Mass attenuation coefficient,
cm2/g
:
µ/p = 167.127
Theta-Interval for CPDP: T/I = 1-45