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本文在总结该区中酸性岩浆岩特征及其成矿条件的基础上,着重分析了喜山期斑岩的岩石化学特征,对照我国一些含铜(钼)矿的斑岩岩石化学特征,发现影响斑岩铜矿球形成的因素除岩石的酸度外,碱度起着更重要的作用。本区绝大多数中酸性斑岩之所以未能赋存斑岩铜矿床,其碱质含量过高应是重要因素之一。当然,并不排除本区局部地带存在生成斑岩铜矿的有利岩体,如朵谷、玉召块、大莲花山等。另指出,本区中酸性岩体有利于铅、锌、金、银的矿化,应当予以重视。
Based on the summary of the characteristics of acid magmatic rocks and the metallogenic conditions in this area, the paper focuses on the petrochemical characteristics of the Himalayan porphyry. According to the petrochemical characteristics of some porphyry rocks containing copper (molybdenum) in our country, Porphyry Copper ball formation factors in addition to rock acidity, alkalinity plays a more important role. The reason why the vast majority of medium-acidic porphyries in this area have not been able to host the porphyry copper deposit is that one of the important factors is the high content of alkali. Of course, it is not ruled out that there are favorable rock masses that generate porphyry copper deposits in some areas of the area, such as Duogu, Yuzhu Block and Da Lianhua Mountain. Also pointed out that the acid rock in this area is conducive to the mineralization of lead, zinc, gold and silver, deserves our attention.