mineral
Pyrite Nodule
Iron Sulfide (FeS2)
Hardness: 6-6.5 on Mohs scale. Color: Pale brass-yellow. Luster: Metallic. Crystal system: Isometric. Streak: Greenish-black to brownish-black. 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 system: Isometric. Streak: Greenish-black to brownish-black. Specific gravity: 4.8-5.0.
Formation & geological history
Formed in sedimentary rocks, hydrothermal veins, and metamorphic rocks through the precipitation of iron and sulfur under reducing conditions.
Uses & applications
Used in the extraction of sulfur and sulfuric acid, historically used for fire-starting, and popular among mineral collectors.
Geological facts
Known commonly as 'Fool's Gold' due to its metallic luster and pale yellow hue which has often deceived inexperienced prospectors.
Field identification & locations
Easily identified by its brassy yellow color, high specific gravity, metallic luster, and hardness that scratches glass. Found worldwide in sedimentary deposits and ore veins.
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