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(Redirected from Siliceous rocks)
Sedimentary rocks that have silica (SiO2) as the principal constituent
Siliceous rocks are sedimentary rocks that have silica (SiO2) as the principal constituent. The most common siliceous rock is chert; other types include diatomite. They commonly form from silica-secreting organisms such as radiolarians, diatoms, or some types of sponges.
