Solid phase
Official name
Zinc sulfide beta
Secondary names
Sphalerite; Zinc sulphide; Zincblende
CAS number
1314-98-3
Type
Family
covalent network solid
Class
tridimentional covalent network solid
Compound type
non-oxide ceramic
Chemical composition
Formula
$\beta-ZnS$
Chemical formula
ZnS
Elemental formula
Zn S
Isotope mixture type
terrestrial abundance
4.0
  Formula Name Family Number min-max Mole fraction Isotope mole fraction State Relevance
$Zn$ Zinc element 1 0.5 1 constituent element main
$S$ Sulfur element 1 0.5 1 constituent element main
Class
tridimensional covalent networks (11)
Type
metal homonuclear tridimensional networks (elemental) (11.02)
Phase name
$\beta-ZnS$
Phase type
crystalline
Crystal system
isometric (cubic)
Crystal class
hextetrahedral
Crystal class symbol
-43m (Td)
Crystal spacegroup
F-43m
Molar mass
97.474 $g/mol$
Density
4.09 $g/cm^3$
State NTP
solid
Phase transitions
Phase transition type Other phases Temperature - Pressure
solid-solid $\alpha-ZnS$ 1293K (1020°C) at 1 bar
Refringence type
isotropic
Refringence sign
no
Refraction index $n_{\alpha}$
2.369
Pure color
colorless
Color
colorless, white
Diaphaneity
transparent to translucent
Luster
resinous
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