The difference between sandstone and limestone

Sandstone, also known as sandstone, is composed of mineral silica particles condensed and crystallized.Sandstone silica by calcium carbonate and iron oxide mixture condensation form durable and rich strength, some areas of the sandstone its hardness is even more than granite, so the construction is more time-consuming.Sandstone because of its coarse grain expansion, especially strong rate hard, suitable for large outdoor stone carving works.Limestone is composed of magnesium limestone and calcium carbonate, in contrast to sandstone, because of its fine and pure white texture, processing adaptability is high, and is one of the first choice for sculptors to make statues.A variety of limestone contains fossilized shells and the bones of Marine life;This kind of stone material is processed slightly or its itself has appreciate aesthetic function.Limestone producing area is extensive, color and texture is quite abundant, its soft, easy to make small carving on the shelf, more suitable for beginners to choose carving.And not suitable for outdoor stone carving works, in durability, can not be compared with sandstone.