Tourmaline mineral content ranges from 90 to 98%, The reaching 7.2 and density of 3.1 Tourmaline mines and productsIn the southeastern Inner Mongolia ,The company has explored two tourmaline deposits and obtained legal mining rights. The deposits are located on the metal-logenic belts in Great Khingan with 9 high-grade tourmaline ore bodies built. The largest is 340m long and 2-4 m wide. As ...