Card No: 10201       Created: 17/04/17    Last edition: 06/07/2017

Name: TEPHROITE
Specification: [4], structure type - olivine, syn
Formula: MnMgSiO4
Symmetry Class: orthorhombic
Space Group: P nma
Unit Cell
Parameters:
a = 10.4510 | b = 6.1245 | c = 4.8076
Number of Formula Unit: Z = 4Unit Cell Volume, Å3: Vc = 307.72
Number of Atomic Position
per full Unit Cell
:
P/U = 28 Molar Volume, cm3/mol: Vm = 46.34
Number of Reflexes used in
Structure Determination
:

-
X-ray density, g/cm3: p = 3.70
R-factor: -MU, 1/cm: µ = 112.330
Wave Length for Calculated
Powder Diffraction Patterns
:
Co=1.78892Mass attenuation coefficient,
cm2/g
:
µ/p = 30.385
Theta-Interval for CPDP: T/I = 1-45