Constituent
Name
Spinel
Official name
Synthetic Spinel
Family
ionic solid
Class
normal salt
Compound type
oxide-hydroxide
Constituent abundance in material
Relevance
main - major
Arrangement
single phase
Mass fraction
1.0
Mole fraction
1.0
Chemical composition
Formula
$MgAl_2O_4$
Chemical formula
MgAl2O4
Elemental formula
Mg Al2 O4
Isotope mixture type
terrestrial abundance
  Formula Name Family Number min-max Mole fraction Isotope mole fraction State Relevance
$Mg$ Magnesium element 1 0.14285714285714285 1.0 pure main
$Al$ Aluminium element 2 0.2857142857142857 1.0 pure main
$O$ Oxygen element 4 0.5714285714285714 1.0 pure main
Class
mixed salts (08)
Phase type
crystalline
Crystal system
isometric (cubic)
Crystal class
hexoctahedral
Crystal class symbol
m-3m (Oh)
Crystal spacegroup
Fd-3m
Texture
monocrystalline
Molar mass
142.27 $g/mol$
Density
3.57 - 3.72 $g/cm^3$
Refringence type
isotropic
Refringence sign
no
Birefringence
0
Refraction index $n_{\alpha}$
1.72 - 1.80