mineral
Pyrite
Iron Sulfide (FeS2)
AI-generated identification · may be incorrectHardness of 6-6.5 on the Mohs scale, brassy yellow color, metallic luster, isometric crystal system, and a greenish-black streak.
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Physical properties
Hardness of 6-6.5 on the Mohs scale, brassy yellow color, metallic luster, isometric crystal system, and a greenish-black streak.
Formation & geological history
Forms in hydrothermal veins, sedimentary rocks, and metamorphic deposits through low to high-temperature geological processes.
Uses & applications
Used historically for ignition, currently utilized in sulfur and sulfuric acid production, and popular as a mineral specimen in collections.
Geological facts
Commonly known as 'Fool's Gold' due to its superficial resemblance to gold, pyrite frequently forms striking cubic crystals.
Field identification & locations
Easily identified by its brittle nature, high density, brassy color, and distinct cubic crystal habit. Found worldwide, notably in Peru, Spain, and the USA.
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Other mineral specimens
Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Limonite
FeO(OH)•nH2O
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Limonite
FeO(OH)•nH2O
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Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Tumbled granite
Granite, a coarse-grained felsic intrusive igneous rock
igneous
Feldspar
Feldspar Group (Tectosilicate, e.g., KAlSi3O8)
mineral