mineral
Pyrite
Iron Sulfide (FeS2)
AI-generated identification · may be incorrectHardness: 6-6.5 on Mohs scale; Color: Pale brass-yellow; Luster: Metallic; Crystal Structure: Isometric; Cleavage: Indistinct; Specific Gravity: 5.0
- Hardness
- 6-6
- Color
- Pale brass-yellow
- Luster
- Metallic
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Physical properties
Hardness: 6-6.5 on Mohs scale; Color: Pale brass-yellow; Luster: Metallic; Crystal Structure: Isometric; Cleavage: Indistinct; Specific Gravity: 5.0
Formation & geological history
Forms in a wide variety of geological environments, from hydrothermal veins to sedimentary rocks and replacement deposits, often under reducing conditions.
Uses & applications
Historically used to strike fire, currently used in the manufacture of sulfur and sulfuric acid, and widely collected as a mineral specimen.
Geological facts
Commonly known as 'Fool's Gold' due to its superficial resemblance to gold, though pyrite is much harder and leaves a greenish-black streak.
Field identification & locations
Easily identified by its brassy yellow metallic luster, cubic crystal habit, and high specific gravity. Found worldwide, notably in Peru, Spain, and the United States.
