What are 2 sediments rocks that are not in the earth science reference tables?

Two sedimentary rocks not typically listed in Earth Science reference tables are chert and conglomerate. Chert is a hard, fine-grained sedimentary rock composed mainly of silica, often found in marine environments. Conglomerate, on the other hand, is a coarse-grained rock formed from cemented gravel and larger clasts, typically indicating a high-energy environment like riverbeds. Both rocks are significant for understanding sedimentary processes and environments.