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SlideshowReport

Chemical, Biochemical, and Organic Sedimentary Rocks

Description
Chemical sedimentary rocks
Derived from material that was once in solution and precipitates to form sediment
Directly precipitated as the result of physical processes, or
Through life processes (biochemical origin)

Common chemical sedimentary rocks
Limestone – the most abundant chemical rock
Microcrystalline quartz (precipitated quartz) known as chert, flint, jasper, or agate
Evaporites such as rock salt or gypsum
Coal – compressed plant material
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