Copper Oxide Cu2O type
Cu2O
|
Chemical name
Copper Oxide Cu2O type |
|
Mineral name
Cuprite |
|
Chemical formula
Cu2O |
|
Melting point [°C]
1232 |
|
Crystal system
cubic |
|
Crystal Class
cubic-hexoctahedral (4/m 3 2/m) |
|
Space Group
Pn3m |
|
Unit cell
a [Å]:4.27 b [Å]:4.27 c [Å]:4.27 |
|
Molecular weight [g/mol]
143.09 |
|
Formula units
Z=2 |
|
Frequent crystal surfaces
(001), (100), (110), (111) |
|
Twinning
none, except from natural defects |
|
Mohs hardness
3.5 - 4 |
|
Density [g/cm3]
6.0 |
|
Color
dark red to conchoidal red |
|
Transparency
transparent to translucent |
|
Refractive Index
n=2.849 |
|
Pleochroism δ
visible |
|
Crystal growth method
Natural |
|
Maximum size
up to 10 x 10 mm, standard 4 x 4 mm |
