胶东是我国重要的金矿聚集区，且绝大多数金矿产于NE向断层构造带中。为在该区找到更多有价值金矿，对山东龙口赵家金矿区内含矿与无矿2种NE向断层构造特征进行了勘查和研究，发现二者的主要区别是：含矿NE向构造形成于燕山旋回早中期，虽呈NE30°左右走向，但有波状弯曲（南部有转成EW向趋势），倾角较缓（10°~20°），断层带较厚，具较强的硅化、绢云母化和黄铁矿化，且有厚度不等的石英脉发育，并伴生有金、银、铅锌等矿化，达到品位即构成矿体；而不含矿的NE向构造则形成于燕山旋回晚期（白垩纪末期），产状上成平直的NE20°走向，倾角较陡（70°左右），断层带主要由压碎的碎裂岩、压碎岩和断层泥组成，无金矿体赋存，没有明显与金矿有关的蚀变。根据这2种NE向构造特征，可以对胶东各地的NE向断层的含矿性快速做出评判，这是在该区寻找和勘查NE向构造蚀变岩型金矿的一个启示。

In the field of Zhaojia gold mine， there are two types of developing northeast trending fault structure and they are ore-bearing or barren respectively.There are obvious differences between them: The ore-bearing northeast trending structure was formed in the early and medium stage of Yanshan cycle. Although the trend of this fault strike is 30 degrees northeast， it has the wave-like curves (The southern part is turning to the trend of east-west direction). Besides， its dip angle is a bit general (10-20°) and the fault zone is thick. And it has strong silicification， sericitization and pyritization. The quartz vein with different thickness can penetrate the fault zone and associate with gold， silver， lead and zinc mineralization. When they reach the regular grade， they can become ore body.The barren northeast trending structure was formed in the later period of Yanshan cycle (Late Cretaceous).The trend of occurrence is straight and 20 degrees northeast. Its dip angle is a bit steep (Approximately 70°).The fault zone is mainly composed of the crushed cataclasite， crushed rock and fault gouge and does not have obvious alteration and mineralization. Based on the features of the two types of northeast trending fault structure， the ore-bearing potential of northeast trending fault structure across Jiaodong can be evaluated and estimated.This can also offer some implications and suggestions for  gold prospecting in this region.