小西南岔金铜矿北山矿段矿床地质特征及矿化富集规律

小西南岔金铜矿床是吉林省东部一个大型的浅成热液型金铜矿床，矿床主要受NW向的帚状断裂构造系统控制。在研究小西南岔矿区地质及北山矿段矿体地质特征的基础上，对其矿化富集规律进行了初步的分析和总结，指出矿体严格受断裂构造控制，主要赋存于五道沟群、花岗岩与闪长岩接触带、闪长岩体内密集裂隙带及闪长玢岩脉上下盘，矿体及围岩变形强烈的部位、金和铜矿化及其近矿围岩蚀变叠加部位品位相对较高，以期对该区外围及深部进一步找矿勘探工作提供参考。

The Geological Characteristics and Mineralization Enrichment Regularity of the Beishan Ore Block belong to Xiaoxinancha Gold-copper Deposit

Xiaoxinancha gold‐copper deposit is a large and shallow hydrothermal type epithermal gold copper deposits in eastern part of Jilin province ,which is mainly controlled by the NW brush fracture tectonic sys‐tem .Based on the study of the Xiaoxinancha mining area geological and Beishan ore block geological char‐acteristics of orebody ,this article analyzes and summarizes the regularity of mineralization and enrich‐ment ,and points out the ore bodies are strictly controlled by fracture structure .The ore bodies mainly oc‐curs in Pzwd ,granite and diorite contact zone ,diorite rock mass dense fracture belt and diorite Bin dike o‐ver & under wall .The gold‐copper mineralization is related to high grade in positions of the ore body or surrounding rock deformation intense parts All of these research work is in order to offer help for further prospecting exploration work of the periphery and deep area .