Pyrites

Part of speech: noun

Definitions

1. A sulfide mineral mainly composed of iron and sulfur, commonly known for its metallic luster and pale brass-yellow hue, often found in sedimentary rocks
2. A naturally occurring mineral frequently mistaken for gold due to its shiny appearance, primarily consisting of iron disulfide and occurring in various geological formations
3. An iron sulfide mineral notable for its resemblance to precious metals, often formed through geological processes and used in some industrial applications

Etymology: Pyrites comes from the Greek "pyrites" (lithos), meaning "of fire" or "fiery," derived from "pyr," the Greek word for fire. The name refers to the mineral's habit of producing sparks when struck against steel, which made it useful for starting fires long before matches existed. Ancient peoples apparently exploited this property, and the Latin "pyrites" carried the same sense into European scholarship. The mineral's association with fire goes beyond sparks. When heated in air, iron pyrites gives off sulfur dioxide, the choking smell that made it a suspect in early chemistry and alchemy. Its deceptive golden shine also earned it the nickname "fool's gold," a phrase that has tricked prospectors for centuries. In English, "pyrites" was used broadly for various sulfide minerals, and the word is still applied in names like chalcopyrite and marcasite, though chemists now give more precise designations to each.

Synonyms: fool's gold, iron sulfide