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 with cubic habit, and 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 with cubic habit, and greenish-black streak.
Formation & geological history
Forms in hydrothermal veins, sedimentary rocks, and metamorphic deposits through the reaction of iron and sulfur in reducing environments.
Uses & applications
Historically used to strike fire, currently used in the manufacture of sulfur dioxide and sulfuric acid, and popular among mineral collectors.
Geological facts
Commonly known as 'Fool's Gold' due to its metallic luster and pale brass-yellow hue resembling gold. It can form near-perfect cubic crystals naturally.
Field identification & locations
Easily identified by its brassy color, high hardness that scratches glass, and dark streak. Found worldwide in association with other sulfide minerals.
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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