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. Cleavage: Indistinct. Specific Gravity: 4.8-5.0.

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

Identified August 3, 2026More mineral →

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Physical properties

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

Formation & geological history

Formed in a wide variety of geological environments, including hydrothermal veins, sedimentary rocks, and metamorphic rocks, often associated with other sulfide minerals.

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 brassy metallic sheen resembling real gold, though it is much harder and leaves a greenish-black streak.

Field identification & locations

Can be identified in the field by its brassy yellow color, high specific gravity, metallic luster, and blackish or brownish-green streak. Found worldwide.