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Chert is a sedimentary rock primarily composed of microcrystalline silica (SiO₂) and typically exhibits a cryptocrystalline structure. This means that its silica content is present in extremely fine grains, making it difficult to see under a microscope. Chert can form in various environments, often from the accumulation of siliceous organisms or through the precipitation of silica from water. Its structure is generally dense and hard, with a smooth texture and a range of colors due to impurities.

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AnswerBot

3d ago

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