黔东南变质碎屑岩型金矿找矿前景分析

ANALYSIS OF ORE PROSPECTS FOR METAMORPHIC CLASOLITE-TYPE GOLD DEPOSITS IN SOUTHEASTERN GUIZHOU PROVINCE,CHINA

黔东南天柱—锦屏—黎平金成矿区,位于中国江南古陆变质碎屑岩型金矿成矿带的西端,采金历史悠久,但勘查研究程度不高,小型矿床点星罗棋布却未发现大型矿床。研究认为,黔东南金矿工业类型与韧性剪切带有关,主要为石英脉型和构造蚀变岩型,可能存在产状平缓的蚀变糜棱岩型;从成矿条件、成矿规律、成矿特征等方面分析,黔东南金矿勘查很有前景。

The Tianzhu-Jinping-Liping gold mineralization area in southeastern Guizhou Province, located in the we.stem part of the metamorphic clasolite-type gold mineralization zone of the Jiangnan old land, has a long history of gold mining, but the degree of gold exploration is low. In this gold mineralization area, lots of minor-scale gold deposits have been found, no large-scale gold deposits have yet been found. This paper suggests that gold mineralization in southeastern Guizhou Province is related to ductile shearing, major ore types are quartz vein-type and tectonically altered rock-type, there probably exists the altered mylonite-type gold mineralization of gentle attitude. On the basis of the analysis of oreforming conditions, ore-forming regularities and mineralization characteristics, it is suggested that there is a good prospect for gold exploration in southeastern Guizhou Province.