Mineral phase
IMA name
Pyrite
Class
non-silicate mineral
Compound type
sulfide
Formula
$FeS_2$
Chemical formula
FeS2
Elemental formula
Fe S2
Isotope mixture type
terrestrial abundance
  Formula Name Family Number min-max Isotope mole fraction State Relevance
$Fe$ Iron element 1 constituent element main
$S$ Sulfur element 2 constituent element main

Strunz

Class
sulfides - sufosalts (02)
Division
metal sulfides, M:S = 1:2 (02.E)
Family
M:S = 1:2, with Fe, Co, Ni, PGE, etc. (02.EB)
Code
02.EB.05a

Dana

Major class
sulfides (II)
Class
sulfides - including selenides and tellurides (02)
Type
where AmBnXp, with (m+n):p=1:2 (02.12)
Group
Pyrite group (Isometric: Pa3) (02.12.01)
Code
02.12.01.01
Phase type
crystalline
Crystal system
isometric (cubic)
Crystal class
diploidal
Crystal class symbol
m-3 (Th)
Crystal spacegroup
Pa-3
Molar mass
119.98 $g/mol$
Density
5.00 - 5.02 $g/cm^3$
State NTP
solid
Refringence type
unknown
Refringence sign
unknown
Pure color
other
Color
pale brass yellow
Diaphaneity
opaque
Luster
metallic