mineral

Pyrite

Iron Sulfide (FeS2)

AI-generated identification · may be incorrect

Hardness: 6-6.5 on Mohs scale. Color: Pale brass-yellow. Luster: Metallic. Crystal structure: Isometric. Cleavage: Indistinct. Specific Gravity: 4.8-5.0

Hardness: 6-6
Color: Pale brass-yellow
Luster: Metallic

Identified August 6, 2026More mineral →

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Physical properties

Hardness: 6-6.5 on Mohs scale. Color: Pale brass-yellow. Luster: Metallic. Crystal structure: Isometric. Cleavage: Indistinct. Specific Gravity: 4.8-5.0

Formation & geological history

Forms in a wide variety of geological environments, from hydrothermal veins to sedimentary rocks and metamorphic deposits, typically during low to high temperature conditions.

Uses & applications

Historically used to strike fire, currently used in the manufacture of sulfur and sulfuric acid, and popular among mineral collectors and for jewelry.

Geological facts

Commonly known as 'Fool's Gold' due to its metallic luster and pale brass-yellow hue, which has often deceived inexperienced prospectors.

Field identification & locations

Easily identified by its brassy yellow color, high density, brittle nature, and conchoidal to uneven fracture. Found worldwide, particularly in association with other sulfide minerals in coal beds and hydrothermal veins.