Granite

Granite

　　Product Name: Granite

Place of Origin: Wenzhou

Product Features: Excellent texture, acid-resistant, corrosion-resistant, and wear-resistant

Product Overview: Granite is a widely used building material. Ouhai has abundant, widely distributed, and diverse types of granite resources, including white, green, black, blue, purplish-red, blue-and-white, and sesame-flower patterns. Traditionally, granite has been used in constructing houses, roads, and bridges. According to surveys, the southeastern part of Ouhai, particularly the Dalaoshan area covering approximately 109 square kilometers, holds over 10 billion cubic meters of granite reserves. Technical evaluations indicate that these granites have high quartz content, very low iron content, and extremely tight crystalline structures, resulting in excellent texture and strong resistance to acid, corrosion, and wear. It is a high-quality corrosion-resistant material suitable for use in chemical engineering, metallurgy, brewing, dyeing, national defense facilities, and more.　　　

Product History: Granite is an igneous rock formed through the cooling and crystallization of underground magma that erupts or intrudes, as well as from metamorphic rocks of granitic composition. It features visible crystal structures and textures. It is composed mainly of feldspar (typically potassium feldspar and plagioclase) and quartz, with small amounts of mica (biotite or muscovite) and trace minerals such as zircon, apatite, magnetite, ilmenite, and sphene. The primary component of granite is silicon dioxide, accounting for about 65%–85%. Chemically, granite is weakly acidic. Typically, granite is slightly white or gray in color, but the presence of dark crystals gives it a speckled appearance. The inclusion of potassium feldspar can lend it a reddish or flesh-colored hue. Granite forms from the slow cooling and crystallization of magma deep beneath the Earth’s surface. When the cooling process is exceptionally slow, it results in a very coarse-grained texture, known as crystalline granite. Granite and other crystalline rocks form the foundation of continental plates and are among the most commonly exposed intrusive rocks on the Earth's surface.

Although granite is generally considered an igneous rock formed from molten material or magma, substantial evidence suggests that some granites are the result of localized deformation or the reworking and recrystallization of pre-existing rocks, without having undergone any liquid or molten phase.