西涝口金矿区地质特征及成矿前景浅析

The Analysis of Geological Characteristics and Metallogenic Potential of Xilaokou Gold Deposit

西涝口金矿区位于胶莱盆地北缘,牟平—乳山金成矿带西侧。区内出露地层主要有古元古界荆山群、中生界莱阳群,岩浆岩以燕山期活动为主,与金成矿关系密切的构造复杂多样。目前,西涝口矿区(333)+(334)金资源量已达到中型规模,矿化类型为蚀变岩型。通过对矿区地球物理、地球化学、矿脉特征以及矿体特征的分析,总结了成矿规律和找矿标志,通过与典型金矿床的对比,推测该区具备成大矿的前景。

Xilaokou gold deposit is located in the northern edge of Jiao-Lai basin, the western of Muping-Rushan gold ore belt. The main strata are Paleoproterozoic Jingshan group and Mesozoic Laiyang group. The main magma activity is Yanshan Period, the structure which has a close relationship with gold mineralization is complex. At present, gold resource reserve （333） ＋ （334） has reached to medium size in Xilaokou gold mining, the type of mineralization is altered rock type. This paper analyzes the characteristics of geophysical, geochemical, ore vein and orebody of ore deposit, it summarized up the regularity of metallogenic and criteria for ore prospecting. According to contrast with typical gold deposit, we speculate that this area has the condition of forming large mine.