Rock Identifier
Pyrite (Iron Sulfide (FeS2)) — mineral
mineral

Pyrite

Iron Sulfide (FeS2)

AI-generated identification · may be incorrect

Mohs hardness of 6-6.5, brass-yellow color, metallic luster, cubic crystal system, conchoidal fracture, specific gravity of 5.0.

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Physical properties

Mohs hardness of 6-6.5, brass-yellow color, metallic luster, cubic crystal system, conchoidal fracture, specific gravity of 5.0.

Formation & geological history

Forms in hydrothermal veins, sedimentary rocks, and replacement deposits across various geological eras from low to high temperatures.

Uses & applications

Used historically for sparking fire, in the production of sulfur and sulfuric acid, and popularly as a mineral specimen for collectors.

Geological facts

Commonly known as 'Fool's Gold' due to its superficial resemblance to actual gold, though it is much harder and lighter.

Field identification & locations

Identified by its brassy metallic color, high hardness that scratches glass, and dark streak; found worldwide in sedimentary and metamorphic deposits.