Everyone has seen stones, everywhere, all kinds. As a product for architectural decoration, natural stone is closely connected with the human world. Next, Longmeida Stone Group will collect and sort out stone knowledge related to natural stone for your reference.
Natural stone is a general term for materials mined from natural rock mass and processed into blocks or plates. The two most basic types of stone used in the architectural decoration industry are natural stone and artificial stone, such as marble, granite, limestone, etc. The natural stone used for architectural decoration mainly includes granite and marble. Natural stone is one of the oldest civil engineering materials. It has high compressive strength, good wear resistance and durability. After processing, its surface is beautiful and decorative, and its resources are widely distributed, rich in reserves, convenient to use local materials, and low production cost. Therefore, natural stone is the main material for building city walls, bridges, houses, roads and water conservancy projects in ancient and modern civil engineering, as well as one of the main decorative materials in modern civil engineering.
Natural stone can be roughly divided into three categories:
Igneous rock is formed by the cooling and consolidation of melted or partially melted materials such as magma from the mantle or crust. Granite is a kind of igneous rock;
Sedimentary rocks are rocks formed by the transportation, sedimentation and diagenesis of weathering products of other rocks and some volcanic eruptions through water flow or glaciers at places not too deep on the surface. Limestone and sandstone belong to this category;
Metamorphic rock is another kind of stone naturally metamorphosed from one stone under the mixed action of high temperature, high pressure and minerals. Marble, slate, quartzite and jade are all metamorphic rocks.
Granite is a very hard igneous rock with high density, scratch resistance and corrosion resistance. It is very suitable for use in floors and kitchen countertops. There are hundreds of varieties of granite.
Marble refers to sedimentary or metamorphic carbonate rocks, including marble, dolomite, limestone, sandstone, shale and slate. It is a derivative of limestone. Marble is a metamorphic rock that can be polished. Marble is soft and easy to scratch or be corroded by acid substances. There are countless kinds of marble all over the world. New wood grain jade blocks are recommended.
Limestone is a kind of sedimentary rock, which is composed of calcite and sediment, forming various colors.
Sandstone is also a kind of sedimentary stone, which is mainly composed of loose quartz sand particles with rough texture. There are also many varieties of sandstone to choose from.
Cave stone is partially metamorphosed limestone. Because of its structure, it can be filled, polished and has high density, so it becomes one of the marbles.
Slate is a metamorphic rock. The original rock is argillaceous, silty or neutral tuff, which can be stripped into thin slices along the direction of foliation. The color of slate varies with the impurities it contains: the iron bearing slate is red or yellow, the carbonaceous slate is black or gray, and the calcium containing slate will bubble when meeting hydrochloric acid, so it is generally named and classified according to its color, such as green slate, black slate, calcareous slate, etc.
Cultural stone is a kind of natural stone mineral, in which slate, sandstone and quartz stone are processed into a decorative building material. Cultural stone is hard, bright in color, rich in texture and different in style. It is characterized by compression resistance, wear resistance, fire resistance, cold resistance, corrosion resistance and low water absorption.