Copper Oxide CuO type
CuO
Chemical name
Copper Oxide CuO type
Mineral name
Tenorite
Chemical formula
CuO
Melting point [°C]
1326
Crystal system
monoclinic
Crystal Class
monoclinic-prismatic (2/m)
Space Group
C2/c
Unit cell
a [Å]:4.67
b [Å]:3.42
c [Å]:5.12
Formula units
Z=4
Twinning
common on {011} (lamellar)
Mohs hardness
3.5 - 4
Density [g/cm3]
6 - 6.5
Cleavage
poor to indistinct
Fracture / Tenacity
brittle, flexible and elastic in thin flakes; uneven to conchoidal
Color
steel-gray, iron-gray, black
Streak
brownish-black
Transparency
opaque, thin flakes transparent
Optical character
biaxial (+)
Pleochroism δ
distinct