Sedimentary rocks are types of rocks that are forms by the deposition of materials on the Earth’s surface and within bodies of water. The set included: bituminous coal, breccia, chalk lumps, chert, diatomite, flint, laterite, lime stone black, lime stone siliceous, mud stone, rock phosphate, rock salt, sand stone red, sand stone siliceous, shale. Average sizes are 2 cm X 3 cm X 1.5 cm