adj. pegmatitic
它们产于富含暗色岩和伟晶岩的古老地盾区内。
The deposits occur in the old shield which is rich in dark rocks and pegmatites.
出露地层为震旦系、泥盆系、二叠系、三叠系以及侵入的花岗岩脉和花岗伟晶岩脉。
Emergence stratums are of Sinian, Devonian, Permian, Trias and intrusive granite dike and coarse - grained granite dike.
其中辉绿岩和煌斑岩是典型的幔源岩，花岗伟晶岩则是典型的壳源岩。
The diabase and lamprophyre are typical mantle source rock while the granite pegmatite is typical crustal source rock.
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