Mineral phase
- IMA name
- Cassiterite
- CAS number
- 18282-10-5
- Class
- non-silicate mineral
- Compound type
- oxide
- Formula
- $SnO_2$
- Chemical formula
- SnO2
- Elemental formula
- Sn O2
- Isotope mixture type
- terrestrial abundance
- Oxides
-
Formula $SnO_{2}$ Mass fraction (%) 100.0
Strunz
- Class
- oxides - hydroxides - arsenites (04)
- Division
- metal:oxygen = 1:2 and similar (04.D)
- Family
- with medium-sized cations; chains of edge-sharing octahedra (04.DB)
- Code
- 04.DB.05
Dana
- Major class
- oxides and hydroxides (III)
- Class
- simple oxides (04)
- Type
- with a cation charge of 4+ (A++++O2) (04.04)
- Group
- Rutile group (Tetragonal: P4/mnm) (04.04.01)
- Code
- 04.04.01.05
- Phase type
- crystalline
- Crystal system
- tetragonal
- Crystal class
- ditetragonal-dipyramidal
- Crystal class symbol
- 4/m (C4h)
- Crystal spacegroup
- P4(2)/mnm
- Molar mass
- 150.71 $g/mol$
- Density
- 6.8 - 7 $g/cm^3$
- State NTP
- solid
- Refringence type
- uniaxial
- Refringence sign
- positive
- Birefringence
- 0.0900 - 0.1030
- Refraction index $n_o$ (w)
- 1.99 - 2.01
- Refraction index $n_e$ (e)
- 2.093 - 2.1
- Pure color
- gray
- Color
- gray, brown, brownish black, colorless, green
- Diaphaneity
- transparent to opaque
- Luster
- adamantine