摘要
金矿体赋存在闪长岩岩筒内部相和边缘相接触过渡地段环边状蚀变裂隙带中。矿体受岩筒产状控制。与金矿化有关的围岩蚀变有硅化、碳酸盐化、粘土化和赤（褐）铁矿化。矿石主要由含金蚀变闪长（斑）岩和含金风化赤（褐）铁矿化闪长（斑）岩组成。金矿物以自然金为主，成色高达９６６．７４。自然金粒度以粗一巨粒金为主，重选回收率达８５％以上。根据同位素、稀土配分模式等确定闪长岩岩筒由混合岩浆上侵演化结晶而成，成矿物质与其同源，为中－低温热液形成的金矿，其类型属于蚀变闪长岩岩筒型金矿床。
Gold ore bodies are enriched in altered fracture Zones between inner and border facies of diorite pipe,controlled by the occurrence of the pipe. The alteration of country rock related to gold mineralization includes silicated, carbonation,argillic and hematitization(or limonite)alteration. The ores are mainly composed of auriferous altered diorite, auriferousweathered hematitization(or limonite)diorite. An mineral is dominated by natural An,reaching to 966. 74 cororing.Natural An is coarse and giant─grained,the recovery rate of gravity separation is above 85 %. According to isotope,RE partition model etc., diorite pipe was formed through mixed magma intrusion upward from which ore-forming material originated. It is a low-to-moderate temperature solution gold deposit.
出处
《地质与勘探》
CAS
CSCD
北大核心
1996年第3期1-6,共6页
Geology and Exploration
