The sequence contains abundant tourmaline in leptynites, stratiform tourmalinites, quartz-tourmaline veins and pegmatites that have spatial and temporal relationships to the borates.

• 本区的电气石包括层状和脉状两大类，而电气石的富集与硼酸盐关系密切，电英岩往往分布在硼酸盐矿体的上盘。