mineral

Pyrite

Iron Sulfide (FeS2)

AI-generated identification · may be incorrect

Hardness: 6-6.5 on the Mohs scale. Color: Pale brass-yellow. Luster: Metallic. Crystal structure: Isometric (cubic, octahedral, pyritohedral). Cleavage: Indistinct. Specific gravity: 4.8-5.0.

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

Identified August 1, 2026More mineral →

Explore Pyrite in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Hardness: 6-6.5 on the Mohs scale. Color: Pale brass-yellow. Luster: Metallic. Crystal structure: Isometric (cubic, octahedral, pyritohedral). Cleavage: Indistinct. Specific gravity: 4.8-5.0.

Formation & geological history

Forms in a wide variety of geological environments, from igneous and metamorphic rocks to sedimentary deposits like shales and coal beds, often precipitated from hydrothermal solutions.

Uses & applications

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

Geological facts

Widely known as 'Fool's Gold' because of its metallic golden luster which often fools inexperienced prospectors into thinking it is real gold.

Field identification & locations

Easily identified by its brass-yellow color, high specific gravity, metallic luster, and the distinctive blackish-green streak. Common worldwide, with famous deposits in Peru, Spain, and the USA.