Granite Stone, the main component of continental crust, is a magmatic rock formed by the formation of magma below the surface. It belongs to deep intrusive rock. It is mainly composed of minerals such as quartz or feldspar. The source of the granite is granum in Latin, meaning grain or granules. Because granite is a deep diagenetic rock, it can often form a fine, unaided mineral particle, hence its name. Not easily weathered granite, color beautiful, colour and lustre appearance can keep more than one hundred years, because of its high hardness, wear resistance, in addition to used as advanced architectural decoration engineering, the hall ground, still the first choice for outdoor sculpture.
Reasons for the formation
Granite and basalt belong to magmatic rocks, the difference is in the magma eruption, granite is the underground part, formed under high pressure, quality of a material surface than after formation of basalt more closely, so it's hard. Huangshan is the underground granite formed after the crust changes. When the granite shows the surface and is in a strong rise, the water is cut along the vertical joint fissure, forming the stone column or the lonely peak, the stone column and the gufeng cluster become fenglin, such as the brilliant pen of huangshan. The granite peak forest looks magnificent and magnificent. For example, the yellow mountain has a depth of 500 to 1000 meters and has more than 70 peaks with a height of more than 1000 meters.
When water along the granite rock mass in the nearly vertical shear crack scour incised, form a nearly vertical gap, gap is more and more deep, two wall form master, look up the sky like a line, this is the sight. Granite is an insoluble rock , so it cannot form a common karst cave in limestone areas. But the water breaks down along the granite, breaking up the rock masses and forming irregular piles. In addition, the area of geomorphic development, the space between the stone eggs can also constitute the cave. Such as huangshan water curtain cave, lotus cave, ao fish hole. The spring is a great tourist attraction in granite mountains. The hot springs of huangshan and the hot springs of lishan. Granite generally contains very small amounts of radioactive elements. Therefore, granite from the springs are usually contains a small amount of harmful radioactive radon gas, the springs can drink can bath, is not only an important tourism resource, is also valuable water resources. Most of China's granite landforms appear in the rain-rich eastern regions, and the mountains are high in water, so there are usually waterfalls in the granite peak forest, or in the more developed mountainous areas. Such as the people of huangshan waterfall, the hundred zhangquan,
Granite is a deep acid igneous igneous rock formed by condensation in the deep underground, which is formed by metamorphism of magma and sedimentary rocks. The main minerals of granite are feldspar, quartz and black and white mica, and the content of quartz is 10% ~ 50%. The content of feldspar is about 2/3, which is divided into orthofeldspar, plagioclase (alkali lime) and microcline. Different species of mineral composition are different, and may contain pyroxite and amphibolite.
Granite is hard and hard to be eroded by acid or alkaline or weathering, often used in building materials. The source of the granite is granum in Latin, and the Chinese noun granite is translated by the Japanese. In the early Meiji dictionaries and geological books, the Granite was translated into Granite or Granite. The flower describes the rock as having a beautiful pattern, and just or post indicates that the rock is hard, which means a hard rock with a floral pattern. Chinese scholars use this translation.
Granite is granular crystalline rock, the main composition ore is plagioclase, alkaline feldspar and quartz. Different species of mineral composition are different, and may contain pyroxite and amphibolite. Usually more than quartz, feldspar content the two groups into mutually embedded occurrence has the following three categories: (1) the different alkali feldspar separate output, (2) different alkali feldspar classes with isomorphic quality into solid solution or double crystal intergrowth, (3) and calcium feldspar into solid solution polysynthetic twin intergrowth, but 80-85% of which are in albite. Alkaline feldspar in petrology refers to orthofeldspar, microplagioclase, sodium feldspar or osmanite, which is composed of these feldspars, and the percentage of sodium feldspar in orfeldspar is not as low as 80%. Potassium feldspar (orthoclase or microcline) and sodium feldspar are respectively expressed in K (Al Si3O8) and Na (Al Si3O8). Calcium feldspar is CaAl2 Si3O8. Calcium feldspar and sodium feldspar composition can form solid melt in various proportions, namely mineralogy called plagioclase mineral or calcium - sodium feldspar.
Granite advantageous physical properties and its beautiful decorative pattern makes him a superior material of the building, known as "the king of rock", and people listening with one, two, three, four tries to evaluate good or bad. Granite can be used in buildings from roofs to floors, and sidewalks are paved with concrete or rock fill DAMS. Many of the places or objects that need to be weathered or need to survive are made of granite. Like Taipei's "chung zheng memorial hall" and Beijing's tiananmen square, the monument to the people's heroes is made of granite. The famous pyramid of Egypt proves it, as the granite has endured for millennia.
The granite structure is homogeneous, the texture is hard, the color is beautiful, is the quality building stone material. The compressive strength varies from stone variety to origin and is about 1000-3000 kg/cm. Not easily weathered granite, color beautiful, colour and lustre appearance can keep more than one hundred years, because of its high hardness, wear resistance, in addition to used as advanced architectural decoration engineering, the hall ground, still the first choice for outdoor sculpture.