mineral
Pyrite-bearing rock
Likely pyrite (FeS₂), possibly with quartz or other sulfide minerals
AI-generated identification · may be incorrectBrassy yellow-gold, metallic luster, irregular granular surface; pyrite hardness 6–6.5 Mohs and cubic crystal structure, though distinct cubes are not visible here. The specimen’s exact mineral mix cannot be confirmed from the image alone.
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Physical properties
Brassy yellow-gold, metallic luster, irregular granular surface; pyrite hardness 6–6.5 Mohs and cubic crystal structure, though distinct cubes are not visible here. The specimen’s exact mineral mix cannot be confirmed from the image alone.
Formation & geological history
Pyrite forms in hydrothermal veins and sedimentary or metamorphic environments, often through sulfide-rich fluids or chemical reactions. Its age depends on the host deposit and cannot be determined visually.
Uses & applications
Pyrite is collected as a mineral specimen and historically used to produce sulfur compounds; it is not precious gold and has limited jewelry use.
Geological facts
Its metallic gold color earned it the nickname “fool’s gold,” but pyrite is harder and more brittle than gold.
Field identification & locations
Look for brassy color and metallic sparkle; pyrite usually leaves a dark streak and does not flatten when struck. Common in sulfide ore deposits worldwide.
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