mineral
Pyrite
Iron Sulfide (FeS2)
Hardness: 6-6.5 on Mohs scale. Color: Pale brass-yellow. Luster: Metallic. Crystal structure: Isometric, often forming cubic or pyritohedral crystals. Cleavage: Indistinct. Specific gravity: 4.8-5.0.
- 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, often forming cubic or pyritohedral crystals. Cleavage: Indistinct. Specific gravity: 4.8-5.0.
Formation & geological history
Forms in a wide variety of geological environments, including hydrothermal veins, sedimentary rocks, and metamorphic rocks, often precipitated from aqueous solutions.
Uses & applications
Historically used to strike fire, currently used in the manufacture of sulfur and sulfuric acid, and popular among mineral collectors and for jewelry.
Geological facts
Commonly known as 'Fool's Gold' due to its brassy metallic sheen resembling gold, although it is harder, lighter, and leaves a greenish-black streak.
Field identification & locations
Easily identified by its brass-yellow color, cubic crystal habit, metallic luster, and high hardness (scratches glass). Found worldwide.
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