Constituent
- Name
- FeS
- IMA name
- Troilite
- Class
- non-silicate mineral
- Compound type
- sulfide
- Comments
- species related to the Pyrrhotite: no vacancy endmember (non-magnetic)
- Relevance
- main - major
- Arrangement
- single phase
- Mass fraction
- 0.79 $\pm$ 0.05
- Formula
- $FeS$
- Chemical formula
- FeS
- Elemental formula
- Fe S
- Isotope mixture type
- terrestrial abundance
Strunz
- Class
- sulfides - sufosalts (02)
- Division
- metal sulfides, M:S = 1:1 (and similar) (02.C)
- Family
- With Ni, Fe, Co, PGE, etc. (02.CC)
- Code
- 02.CC.10
Dana
- Major class
- sulfides (II)
- Class
- sulfides - including selenides and tellurides (02)
- Type
- where Am Bn Xp, with m:p=1:1 (02.08)
- Group
- Troilite group (02.08.09)
- Code
- 02.08.09.01
- Phase type
- crystalline
- Crystal system
- hexagonal
- Crystal class
- dihexagonal-dipyramidal
- Crystal class symbol
- 6/mmm (D6h)
- Crystal spacegroup
- P6(3)/mmc
- Molar mass
- 87.91 $g/mol$
- Density
- 4.58 - 4.65 $g/cm^3$
- Refringence type
- unknown
- Refringence sign
- unknown
- Color
- bronze brown, gray brown, yellow brown
- Diaphaneity
- opaque
- Luster
- metallic