sedimentary microscope are formed in plays
slate is not sedimentary_rock. sedimentary_rock is not rock. arenaceous_rock is not sedimentary_rock. sedimentary is not rock. arenaceous_rock is sedimentary_rock. clastic_sedimentary_rock is not sedimentary_rock. sedimentary_rock is rock. sedimentary is rock. slate is sedimentary_rock. sedimentary_rock is not stone.