秦岭东段花岗伟晶岩区位于秦岭东西向构造体系,加里东褶皱带。南北各以深大断裂为界。区内地层主要为太古界太华群斜长角闪片岩,黑云母斜长角闪片岩和透辉石大理岩。火成岩有大面积出露的花岗岩,以及东南部以变辉长岩,变辉石岩为主的超基性岩——基性岩。在数千平方公里的范围内,有伟晶岩脉数千条,划分为若干个伟晶岩密集区(图1)。 The eastern part of Qinling Mountains granite pegmatite is located in the Qinling east-west structural system, the Caledonian fold belt. North and South each with deep faults as a boundary. The strata in the area are mainly Archean Taihua group plagioclase, biotite plagioclase and diopside marble. Igneous rocks have exposed a large area of ​​granite, and the southeastern gabbro and amphibole-based ultrabasic rocks - basic rock. Within thousands of square kilometers, there are thousands of pegmatites divided into several pegmatite-rich areas (Figure 1).