一、控制钨矿体分布的岩浆-构造特性 在矿区内广泛发育着太古代的各种片麻岩、混合岩、结晶片岩以及穿过这些岩石的花岗岩类岩群。 (一)岩浆作用特性 阳德侵入体由作为侵入岩体基底的斑状黑云母花岗岩,中粗粒黑云母花岗岩和沿着侵入岩体北西边缘发育的细粒白云母花岗岩及伟晶岩组成。此外还有花岗斑岩、石英斑岩等酸性岩脉和闪长玢岩、煌斑岩及 I. MAGMATIC-Tectonic Characteristics Controlling Tungsten Ore Distribution Extensive Archean gneiss, mixed rocks, crystalline schist, and granitoids that pass through these rocks are widely developed within the mine. (I) Magmatic Characteristics The Yangde intrusion consists of porphyritic biotite granite, medium-coarse biotite granite, and fine-grained muscovite and pegmatite developed along the north western margin of the intrusive rock. In addition there are granite porphyry, quartz porphyry and other acidic dikes and diorite porphyrite, lamprophyre and