mineral
Pyrite Ore
Iron Sulfide (FeS2)
AI-generated identification · may be incorrectHardness of 6-6.5 on the Mohs scale, brass-yellow color, metallic luster, cubic 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, cubic crystal system, and a greenish-black streak.
Formation & geological history
Forms in hydrothermal veins, sedimentary rocks, and metamorphic deposits through low-temperature aqueous processes.
Uses & applications
Used primarily in the manufacture of sulfur and sulfuric acid, and popular among mineral collectors.
Geological facts
Commonly known as 'Fool's Gold' due to its superficial resemblance to real gold.
Field identification & locations
Identified by its brassy metallic sheen, high density, and refusal to scratch easily with a knife.
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Limonite
FeO(OH)•nH2O
mineral
Sandstone (with potential mineral staining/concretions)
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sedimentary
Tumbled granite
Granite, a coarse-grained felsic intrusive igneous rock
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Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
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Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic