mineral
Pyrite
Iron Sulfide, FeS2
AI-generated identification · may be incorrectHardness 6-6.5 on Mohs scale, brassy yellow color, metallic luster, isometric crystal system with cubic or octahedral habits, and a greenish-black streak.
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Physical properties
Hardness 6-6.5 on Mohs scale, brassy yellow color, metallic luster, isometric crystal system with cubic or octahedral habits, and a greenish-black streak.
Formation & geological history
Forms in hydrothermal veins, sedimentary rocks, and replacement deposits across a wide temperature range.
Uses & applications
Historically used to strike fire, currently used in the production of sulfur dioxide and sulfuric acid, and popular among mineral collectors.
Geological facts
Commonly known as 'Fool's Gold' due to its superficial resemblance to gold, though it is harder, lighter, and leaves a dark streak.
Field identification & locations
Identified by its brassy metallic luster, high hardness that cannot be scratched with a knife, and brittle cubic crystal aggregates.
