mineral
Pyrite
Iron Sulfide (FeS2)
Hardness: 6-6.5 Mohs; Color: Pale brass-yellow; Luster: Metallic; Crystal Structure: Isometric; Cleavage: Indistinct; Specific Gravity: 4.8-5.0
- Hardness
- 6-6
- Color
- Pale brass-yellow
- Luster
- Metallic
Identified More mineral →
Explore Pyrite in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 6-6.5 Mohs; Color: Pale brass-yellow; Luster: Metallic; Crystal Structure: Isometric; Cleavage: Indistinct; Specific Gravity: 4.8-5.0
Formation & geological history
Forms in diverse environments including hydrothermal veins, sedimentary rocks, and contact metamorphic deposits. It is often found in association with other sulfides and oxides.
Uses & applications
Primarily used as a source of sulfur and iron. Historically used in firearms. Now popular in inexpensive jewelry and as a collector's mineral specimen.
Geological facts
Often called 'Fool's Gold' because its color and metallic luster frequently lead novice prospectors to mistake it for gold. However, pyrite is harder and more brittle.
Field identification & locations
Identify by its cubic or dodecahedral crystal habit, brassy color, and greenish-black streak when rubbed on a tile. Found worldwide, notably in Spain, Italy, and the USA.
More like this
Other mineral specimens
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Schist
Schist
Metamorphic
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Gypsum (variety Selenite or Alabaster)
Calcium sulfate dihydrate (CaSO4·2H2O)
Mineral
Nephrite Jade
Nephrite
Mineral/Rock
Granite
Granite (Phaneritic intrusive igneous rock)
igneous