Mineral phase
- IMA name
- Graphite
- Class
- native element
- Compound type
- carbon allotrope
- Formula
- $C$
- Chemical formula
- C
- Elemental formula
- C
- Isotope mixture type
- terrestrial abundance
Strunz
- Class
- elements (01)
- Division
- metalloids and nonmetals (01.C)
- Family
- Carbon-silicon family (01.CB)
- Code
- 01.CB.05a
Dana
- Major class
- native elements (I)
- Class
- native elements (01)
- Type
- with semi-metallic and non-metallic elements (01.03)
- Group
- Carbon Polymorph group (01.03.06)
- Code
- 01.03.06.02
- Phase type
- crystalline
- Crystal system
- hexagonal
- Crystal class
- dihexagonal-dipyramidal
- Crystal class symbol
- 6/mmm (D6h)
- Crystal spacegroup
- P6(3)/mmc
- Molar mass
- 12.01 $g/mol$
- Density
- 2.09 - 2.23 $g/cm^3$
- State NTP
- solid
- Refringence type
- uniaxial
- Refringence sign
- negative
- Refraction index $n_o$ (w)
- 1.93 - 2.07
- Pure color
- black
- Color
- black, dark gray, steel gray, iron black
- Diaphaneity
- opaque
- Luster
- submetallic