华南锑矿带单锑型锑矿床"两层楼"二元成矿模型OA北大核心CSTPCD

The South China antimony ore belt,which is composed of lots of large-super large pure stibnite deposits,is the most important antimony metallogenic belt in China and even in the world.In this study,the Muli antimony deposit in southeastern Yunnan province,was taken as a main research object,through the detailed comparative study of basic geological characteristics with the typical Xikuangshan and Dushan antimony ore fields(deposits)in the South China antimony ore belt.We can find that no matter in ore field or deposit scale for the pure stibnite ore field(deposit),two types of ore may occur,"quartz-stibnite"and"calcite-stibnite".In the same ore field,some deposits(sections)show"quartz-stibnite"mineral assemblage,while some show"calcite-stibnite"mineral assemblage.On the other hand,the"quartz-stibnite"mineral assemblage usually located in the upper part,and"calcite-stibnite"mineral assemblage located in the lower part when they contemporaneously exist in one deposit.Such model is first named as"two-story binary metallogenic model"in this paper,which is of great significance for the study of genesis and prospecting of pure stibnite deposits in South China antimony ore belt.