mineral
Pyrite
Iron Disulfide (FeS2)
AI-generated identification · may be incorrectHardness: 6-6.5 on Mohs scale; Color: Pale brass-yellow to golden; Luster: Metallic; Crystal Structure: Isometric/Cubic; Cleavage: Indistinct; Specific Gravity: 4.9-5.2
- Hardness
- 6-6
- Color
- Pale brass-yellow to golden
- 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 on Mohs scale; Color: Pale brass-yellow to golden; Luster: Metallic; Crystal Structure: Isometric/Cubic; Cleavage: Indistinct; Specific Gravity: 4.9-5.2
Formation & geological history
Forms in a wide variety of geological settings including hydrothermal veins, as an accessory mineral in igneous rocks, in contact metamorphic rocks, and in sedimentary rocks such as shale and coal.
Uses & applications
Historically used as a source of sulfur and sulfuric acid. Today it is used in the production of lithium batteries, as a gemstone in 'marcasite' jewelry, and as a popular collector specimen.
Geological facts
Commonly known as 'Fool's Gold' because its color and metallic luster often led prospectors to mistake it for real gold. Unlike gold, pyrite is brittle and yields a greenish-black streak when rubbed on a porcelain plate.
Field identification & locations
Identified in the field by its cubic crystal habit, brassy color, and high hardness (it can scratch glass, whereas gold cannot). It is found globally, with famous deposits in Spain, Italy, and the USA.
