mineral
Pyrite
Iron Sulfide (FeS2)
Hardness: 6-6.5 on Mohs scale. 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
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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: 4.8-5.0
Formation & geological history
Forms in a wide variety of geological environments, from hydrothermal veins to sedimentary rocks and metamorphic deposits, typically during low to high temperature conditions.
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 metallic luster and pale brass-yellow hue, which has often deceived inexperienced prospectors.
Field identification & locations
Easily identified by its brassy yellow color, high density, brittle nature, and conchoidal to uneven fracture. Found worldwide, particularly in association with other sulfide minerals in coal beds and hydrothermal veins.
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