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滇东南一些著名的大型—超大型锡多金属矿床,如个旧锡矿和都龙锡矿、白牛厂大型银、锡多金属矿床下部均有燕山期花岗岩发育,因此,个旧和都龙锡多金属矿床大多数人认为是岩浆热液矿床。笔者对上述三个矿床的矿石矿物组构、成分以及它们的共生组合关系进行了系统研究,发现了大量海底喷流沉积结构构造。值得一提的是在岩体接触带附近的块状硫化物矿体中发现了鲕状结构和丝状管形虫等证据,而这些矿体曾被认为是典型的岩浆热液成因。对这些矿区硫化物矿物学的研究为这些硫化物的喷流沉积成因提供了有力的证据。本文依据新的发现对滇东南三大锡、银多金属矿床的异同和成因进行了详尽的阐述。
Some well-known large-scale ultra-large tin-polymetallic deposits in southeastern Yunnan, such as Gejiu Tin Mine and Dulong Tin Mine, and the Yanshanian granite in the lower part of the large-scale silver and tin polymetallic deposits in the White Cattle Plant. Therefore, both Gejiu and Du Long Tin Most metal deposits are considered magmatic hydrothermal deposits. The authors systematically studied the mineralogy and ore composition, composition and their symbiotic assemblages in these three deposits and found a large number of submarine jet depositional structures. It is worth mentioning that evidence of oolitic structures and filamentous fungi were found in the massive sulfide ore bodies near the contact zone of rock mass, and these ore bodies were considered to be typical causes of magmatic hydrothermal fluids. The study of sulphide mineralogy in these mines provides strong evidence for the jet deposition of these sulphides. Based on the new findings, this article elaborates on the similarities and differences and causes of the three major tin and silver polymetallic deposits in southeastern Yunnan.