mineral
Chalcopyrite
CuFeS2
AI-generated identification · may be incorrectHardness of 3.5 to 4 on the Mohs scale, brass-yellow color often with an iridescent tarnish, metallic luster, and tetragonal crystal system.
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Physical properties
Hardness of 3.5 to 4 on the Mohs scale, brass-yellow color often with an iridescent tarnish, metallic luster, and tetragonal crystal system.
Formation & geological history
Forms primarily in hydrothermal sulfide ore deposits, often associated with igneous and metamorphic rock environments.
Uses & applications
Primary ore of copper, extensively used in electrical wiring, plumbing, and occasionally as a mineral specimen for collectors.
Geological facts
Often nicknamed fool's gold due to its metallic yellow appearance, though it is softer and darker green-black in streak than pyrite.
Field identification & locations
Identify by its distinctive brassy yellow color, metallic luster, and greenish-black streak; commonly found globally in copper-mining regions.
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Other mineral specimens
Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Tumbled granite
Granite, a coarse-grained felsic intrusive igneous rock
igneous
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Granite
Granite (Phaneritic intrusive igneous rock)
igneous