mineral
Pyrite Nodule
Iron Sulfide (FeS2)
AI-generated identification · may be incorrectHardness of 6-6.5 on the Mohs scale, brass-yellow to pale bronze color with a metallic luster, and an isometric crystal system.
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Physical properties
Hardness of 6-6.5 on the Mohs scale, brass-yellow to pale bronze color with a metallic luster, and an isometric crystal system.
Formation & geological history
Formed through low-temperature precipitation in reducing sedimentary environments, often replacing organic matter in shale or clay.
Uses & applications
Used extensively as a mineral specimen for collectors, historically used to strike fire, and occasionally as an ore of sulfur.
Geological facts
Commonly known as 'Fool's Gold' due to its superficial resemblance to gold, and forms striking spherical nodules in chalk deposits.
Field identification & locations
Easily identified by its brassy metallic luster, high hardness that scratches glass, and dark green-black streak.
