Both graphite and pyrite are classified as minerals.
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Graphite: It is a form of carbon and is known for its layered structure, which gives it unique properties such as lubricity and electrical conductivity. Graphite is commonly used in pencils, batteries, and as a lubricant.
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Pyrite: Also known as "fool's gold," pyrite is an iron sulfide mineral (FeSâ‚‚) that has a metallic luster and a golden color. It is often found in sedimentary rocks and is mined for its sulfur content.
Both materials meet the criteria for minerals, which include being naturally occurring, inorganic, solid, with a definite chemical composition, and having a crystalline structure.