mineral
Pyrite in Matrix
Iron Sulfide (FeS2)
Hardness: 6-6.5 on the Mohs scale. Color: Pale brass-yellow to brownish-black streak. Luster: Metallic. Crystal System: Isometric. Cleavage: Indistinct. Specific Gravity: 4.8-5.0.
- Hardness
- 6-6
- Color
- Pale brass-yellow to brownish-black streak
- Luster
- Metallic
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Physical properties
Hardness: 6-6.5 on the Mohs scale. Color: Pale brass-yellow to brownish-black streak. Luster: Metallic. Crystal System: Isometric. Cleavage: Indistinct. Specific Gravity: 4.8-5.0.
Formation & geological history
Forms in a wide variety of geological environments, from sedimentary rocks to hydrothermal veins and metamorphic rocks, often over millions of years.
Uses & applications
Used historically for sparking fire, in the production of sulfur and sulfuric acid, and popularly collected as a mineral specimen.
Geological facts
Commonly known as 'Fool's Gold' due to its metallic luster and pale yellow hue resembling actual gold, though it is much harder and lighter.
Field identification & locations
Easily identified by its brassy metallic sheen, cubic crystal habit, and high specific gravity compared to surrounding host rock. Found worldwide.
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