mineral
Pyrite
Iron Sulfide (FeS2)
AI-generated identification · may be incorrectHardness of 6-6.5 on the Mohs scale, brass-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, brass-yellow color, metallic luster, isometric crystal system, and a greenish-black streak.
Formation & geological history
Forms in igneous, metamorphic, and sedimentary rocks through hydrothermal activity, low-temperature precipitation, or replacement of fossils.
Uses & applications
Historically used to strike fire, currently used in the manufacture of sulfur and sulfuric acid, and popular among mineral collectors.
Geological facts
Known commonly as 'Fool's Gold' due to its superficial resemblance to real gold, pyrite often forms striking cubic or pyritohedral crystals.
Field identification & locations
Easily identified by its brass-yellow color, high specific gravity, brittle tenacity, and blackish streak. Found worldwide, notably in Peru, Spain, and the United States.
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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