shale Synonyms

clay-stone mudstone stones macadam briquette chalkboard sedimentary rock crushed rock stone steatite slate shiver shell shaly oil shale rocks clay-containing clay-bearing calcilith black mineral nonclastic rock mechanical sedimentary rock stratified rock chemical sedimentary rock bedded rock Chippings blackboards clastic rock tailings sediment screenings coal clay chessboard chert chalk board bluestone blackboard basalt asbestos argillite argillaceous argil conglomerate diorite schorl schistose schist sandstone