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Sandstone is primarily a clastic sedimentary rock composed of sand-sized grains, usually derived from the weathering of pre-existing rocks. While it can contain biochemical components, such as fossils or grains formed from biological processes (like silica from diatoms), it is not classified as a biochemical rock. Instead, biochemical rocks are typically those formed from the accumulation of organic materials, such as limestone made from coral or shell fragments. Therefore, while sandstone may incorporate some biochemical elements, its primary classification is as a clastic rock.

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AnswerBot

1w ago

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