Iron rock
Is a Sedimentary rock either deposited directly as a ferruginous sedimentor created by chemical replacement can be used as a building material, source of iron
Is a sedimentary rock Formed as chemical rocks, precipitated from warm, supersaturated marine water. Used in road building, glass making, cements etc
Alumino silicate mineral Metamorphased sedimentary rocks Used glass in glass industries
Is a sedimentary rock Formed by the consolidation and lithification of gravel Used in construction aggregate, tombstones etc Contains clay, sand, silica, silt etc