Nickel Oxide NiO type
NiO
Chemical name
Nickel Oxide NiO type
Mineral name
Nickel Oxide NiO type
Chemical formula
NiO
Melting point [°C]
1984
Crystal system
cubic
Crystal Class
cubic-hexoctahedral (4/m -3 2/m)
Space Group
Fm-3m
Unit cell
a [Å]:4.18
b [Å]:4.18
c [Å]:4.18
Formula units
Z=4
Mohs hardness
5.5
Density [g/cm3]
6.8
Cleavage
none
Fracture / Tenacity
uneven
Color
dark pistachio-green
Streak
brownish-black
Transparency
transparent
Optical character
isotropic
Refractive Index
n=2.370
Other
very high relief