mineral
Pyrite with Quartz
Iron Sulfide (FeS2) with Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness 6-6.5 for pyrite, 7 for quartz. Metallic brass-yellow luster for pyrite, vitreous for quartz. Cubic crystal habit with striations.
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Physical properties
Hardness 6-6.5 for pyrite, 7 for quartz. Metallic brass-yellow luster for pyrite, vitreous for quartz. Cubic crystal habit with striations.
Formation & geological history
Formed in hydrothermal veins and sedimentary environments through precipitation from iron- and sulfur-rich fluids.
Uses & applications
Used primarily as a mineral specimen for collectors, historically as a source of sulfur, and occasionally in jewelry.
Geological facts
Commonly known as fool's gold due to its metallic luster and pale brass-yellow hue resembling real gold.
Field identification & locations
Identified easily by its brassy metallic color, cubic crystals, and failure to scratch glass easily. Found globally, notably in Peru, Spain, and the USA.
