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扎西康铅锌银锑多金属矿床是北喜马拉雅金-锑成矿带的典型代表,更是该成矿带内为数不多的已达到大型规模的矿床。扎西康矿床具有丰富的金属矿物和脉石矿物组合以及极为复杂的成矿期次,因而其成矿世代的系统划分不仅对该矿床成矿过程的认识和理解具有重要意义,而且对区带成矿作用的认识也具有十分重要的指示意义。文章在总结前人的认识基础之上,根据矿物共生组合和相互穿插关系,提出了新的成矿期次划分方案,将扎西康矿床的成矿世代分为3期、7阶段和13亚阶段,这种多期多阶段成矿特点显示出扎西康矿床的形成可能是多期流体叠加的结果,并提出晚期锑元素对先存铅锌矿体的叠加改造成因。研究表明这种叠加改造成矿作用在整个区带上具有普遍意义,指示了在特提斯喜马拉雅锑金成矿带可能具有寻找铅锌矿体的潜力。
Zhaxi Kang Pb-Zn-Ag-Ag polymetallic deposit is a typical representative of the Northern Himalayan gold-antimony metallogenic belt, and it is one of the few deposits in the metallogenic belt that has reached a large scale. The Tashiikang deposit is rich in metallic minerals and gangue minerals and has extremely complicated metallogenic stages. Therefore, the systematic division of its mineralization age is of great significance not only for the understanding and understanding of the ore-forming process of the deposit, The understanding of the role of ore also has very important significance. On the basis of summarizing previous understandings, this paper proposes a new plan of metallogenic stages according to the symbiosis of minerals and interpenetrating relationship, and divides the mineralization age of the Tashihikang deposit into three stages, seven stages and 13 sub-stages The multi-stage multi-stage mineralization shows that the formation of Zhaxikang deposit may be the result of multi-stage fluid superposition and the superpositional remodeling of advanced lead-zinc ore bodies by advanced antimony elements is proposed. Research shows that this superimposed remineralization has universal significance over the entire zone, indicating that the Tethyan Himalayan antimony gold metallogenic belt may have potential for finding lead-zinc ore bodies.