Granite stone, the main component of the continental crust, is a magma formed in the surface below the formation of magmatic rock, belonging to the deep intrusive rock. Mainly composed of quartz or feldspar and other minerals. The origin of the granite stone is the Latin granum, meaning grain or grain. Because granite stone is deep diagenetic, often can form a well-developed, visually discernible mineral particles, hence the name. Granite stone is not easy weathering, beautiful color, the appearance of color can be maintained for more than a century, because of its high hardness, wear resistance, in addition to the use of high-level architectural decoration works, hall floor, or open-air carving of the preferred material.
The main ingredient
Granite stone is the depth of the magma deepened by the formation of deep into the acidic igneous rock, part of the granite rock and sedimentary rocks by the formation of the gneiss or mixed rock of rock. Granite stone mainly composed of feldspar, quartz, black and white mica, etc., quartz content is 10% to 50%. Feldspar content of about 2/3 of the total, divided into feldspar, plagioclase (soda lime) and micro-plagioclase (potash). Different varieties of mineral composition is not the same, there may be pyroxene and amphibole.
Granite stone is hard, difficult to be acid or weathering erosion, often used in building materials. Granite stone (Granite) is the origin of the Latin granum, and the Chinese name of the granite stone is translated from the Japanese. In the early days of the Meiji Dictionary and Geological Books, Granite was translated into granite or flower rock. Flower to describe the rock has a beautiful markings, just or post that this rock is very hard, that is, with a flower-like rigid hard rock meaning
Granite stone for the granular crystalline rock, the main component of the ore for the plagioclase, alkaline feldspar and quartz. Different varieties of mineral composition is not the same, there may be pyroxene and amphibole. Usually feldspar more than quartz, both into the intercultural organization of the following three categories:
(1) different components of alkaline feldspar alone,
(2) different alkaline feldspar with the same type of solid into the melt or double crystal cross birth,
(3) and calcium feldspar into a solid melt caused by polymer double crystal cross, but 80-85% of albite. Alkaline feldspar in petrology refers to the feldspar, micro slant feldspar, albite and amphibole or synthetic frit from the feldspar, the amphibole contained in the percentage of albite molecules is not low 80%. Potash feldspar (feldspar or micro-plagioclase molecules), albite molecules were K (Al Si3O8) and Na (Al Si3O8) said. Calcium feldspar molecular formula CaAl2 Si3O8. Calcium feldspar and albite components can form solid fines in various proportions, ie mineralogical so-called plagioclase minerals or calcium ~ albite.
Granite stone unique physical characteristics with its beautiful pattern so that he became a good material for the building, known as "the king of the rock," said, there are people with a concept, two, three, four to evaluate good or bad. In the building granite stone from the roof to the floor can be used, sidewalk is also the curb, if it crushed to make cement or rock fill dam. Many of the places or items that require wind and rain or need to be kept are made of granite. Like the Taipei "Chiang Kai-shek Memorial Hall" brand and Beijing Tiananmen Square People's Heroes Monument are made of granite stone. Granite stone over the millennium is still enduring the characteristics of the famous Egyptian pyramid to prove this point.
Granite stone structure is uniform, hard texture, beautiful color, is a high-quality building stone. Compressive strength varies according to the variety and origin of stone, about 1000-3000 kg / cm. Granite stone is not easy weathering, beautiful color, the appearance of color can be maintained for more than a century, because of its high hardness, wear resistance, in addition to the use of high-level architectural decoration works, hall floor, or open-air carving of the preferred material.
Commercial granite rocks include granite rock, gneiss, gneiss granite, granite schist and scholar called the syenite, granite diorite components between the rocks. Gypsum rocks include mineral compositions, granite-like granite and granite-like organizers. Commercial granite stone also includes other similar organizations, with a small amount of sub-components of mineral feldspar crystalline rock, mainly for decorators, such as rock scholars called calcium plagioclase. Gneiss is a coarse crystalline rock, mainly composed of silicate minerals, inlaid and granular crystal structure, different types of minerals in a regular or irregular, interactive arrangement caused. According to the United States of America Materials Testing Association classification granite stone is divided into ordinary granite and black granite stone two. Ordinary granite stone from quartz, feldspar, marble and other components, but also because of colored minerals and with black or dark green, the whole is often feldspar around its color. Black granite stone dark green or black rock, from plagioclase, pyroxene, olivine, hornblende and other rock made, so the black granite stone is divided into spot rock, diabase, basalt and other three.