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

Pyrite

Iron Sulfide (FeS2)

AI-generated identification · may be incorrect

Hardness of 6-6.5 on the Mohs scale, brass-yellow to pale silver-gold color, metallic luster, isometric crystal system with distinct cubic or pyritohedral forms.

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Physical properties

Hardness of 6-6.5 on the Mohs scale, brass-yellow to pale silver-gold color, metallic luster, isometric crystal system with distinct cubic or pyritohedral forms.

Formation & geological history

Forms in hydrothermal veins, sedimentary rocks, and metamorphic deposits across a wide range of temperatures.

Uses & applications

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

Geological facts

Commonly known as 'Fool's Gold' due to its superficial resemblance to real gold, though it is harder and more brittle.

Field identification & locations

Identified by its brassy metallic luster, cubic crystal habit, greenish-black streak, and inability to be scratched by a knife.