Is crystallization required for the formation of sedimentary rock?

No, crystallization is not required for the formation of sedimentary rock. Sedimentary rocks primarily form through the accumulation and compaction of sediments, which can include fragments of other rocks, minerals, and organic material. These sediments may undergo lithification, which involves compaction and cementation, rather than crystallization. Crystallization is more associated with the formation of igneous and metamorphic rocks.