Solid phase
- Official name
- Copper monosulfide
- Secondary names
- Copper sulfide; Copper(II) sulfide; Cupric sulfide; Covellite
- CAS number
- 1317-40-4
- Family
- covalent network solid
- Class
- tridimentional covalent network solid
- Compound type
- sulfide
- Formula
- $CuS$ or $Cu^{+3}S^{2−}S_2^−$
- Chemical formula
- CuS
- Elemental formula
- Cu S
- Isotope mixture type
- terrestrial abundance
- Class
- tridimensional covalent networks (11)
- Type
- metal homonuclear tridimensional networks (elemental) (11.02)
- Phase type
- crystalline
- Crystal system
- hexagonal
- Crystal class
- dihexagonal-dipyramidal
- Crystal class symbol
- 6/m (C6h)
- Crystal spacegroup
- P6(3)/mmc
- Molar mass
- 95.611 $g/mol$
- Density
- 4.76 $g/cm^3$
- State NTP
- solid
- Phase transitions
-
Phase transition type Other phases Temperature - Pressure solid-liquid decomposition Cu, S ? above 500 °C, 773 K
- Refringence type
- uniaxial
- Refringence sign
- positive
- Birefringence
- 1.170
- Refraction index $n_{\alpha}$
- 1.450
- Refraction index $n_{\beta}$
- 2.620
- Pure color
- black
- Diaphaneity
- opaque
- Luster
- submetallic