clusters pyrite crystals also known fool gold with metallic

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Clusters of pyrite crystals, also known as fool's gold, with a metallic luster and brassy-yellow color. The cubes have well-defined edges and polished surfaces. These natural formations are surrounded by smaller, granular particles. Pyrite, or iron sulfide (FeS?), is a common sulfide mineral in sedimentary deposits, typically used for sulfur production. Its geometric shapes and reflective surfaces make it visually striking.