Perlite is a volcanic eruption of acidic lava, formed by rapid cooling of the vitrified rock, because of their pearl, named after the fracture. Perlite ore includes perlite, obsidian and turpentine rocks. Difference between the three because of condensation forming perlite with arc-shaped crack, said perlite structure, water content from 2 to 6%; pine resin rock has a unique luster, moisture content 10% 6; obsidian with glass luster and conchoidal fracture, the water content generally less than 2%.
China perlite deposits mainly in the frequency of the Mesozoic continental crust activities. The generation of volcanic formation of the north of Heilongjiang, South China Sea coast and Hainan Island, 3,000 km long, 300 to 800 km wide volcanic belt. This belt can be further divided into three sub-bands. The first sub-zone, also called Mountain, Yanshan subzone. The perlite
The main sub-zone of origin are Hebei Kuan perlite, Hiraizumi, and Zhangjiakou, paddock, Guyuan; Liaoning Lingyuan, law library, Jianping, and Jinzhou, Jinxi Yixian, Montenegro; Shanxi Lingqiu; Henan Xinyang; Inner Mongolia Toronto, Taipusiqi are blue flag, the flag after other. The second Northeast Asia with the name of the northern part of Shandong sub-band. This sub-zone of the perlite deposits of Jilin Jiutai, Muling and so on. The third sub-band with the name of the southeast coast of Asia. This sub-zone in Ninghai resin deposits are deposits and other rocks