1.Thus, the boron-bearing rock system and the magnesian rocks are the foundation of the borate deposits, whereas regional metamorphism and migmatitization and tectonism are the necessary conditions.
岩系、镁质容矿岩石是
矿形成的物质基础,区域变质及混合岩化作用、
造活
是
矿形成的必要条件。