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.
含硼
系、镁质容矿石
硼矿形成的物质基础，区域变质及
化作
、构造
硼矿形成的必要条件。
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.
含硼系、镁质容矿石硼矿形成的物质基础，区域变质及化作、构造硼矿形成的必要条件。
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