辽宁红透山铜锌矿围岩黑云斜长角闪岩锆石U-Pb定年及其块状硫化物指示意义.docx

辽宁红透山铜锌矿围岩黑云斜长角闪岩锆石U-Pb定年及其块状硫化物指示意义摘要：辽宁红透山铜锌矿在辽宁省金融讯息地峡北段，是中国东北地区最大的矿山之一该矿床围岩主要为黑云斜长角闪岩本文通过对该矿床围岩中锆石的U-Pb定年，确定了围岩形成的年代为早白垩世（约120 Ma）同时，研究发现该围岩中存在大量的块状硫化物，其中主要矿物为黄铁矿和闪锌矿通过区域地质对比分析、矿床成因研究和地球化学分析，发现这些硫化物可能是矿床成矿过程中形成的因此，黄铁矿和闪锌矿的含量和分布情况，可以为矿床勘探提供重要的指示意义关键词：辽宁红透山铜锌矿、围岩、黑云斜长角闪岩、锆石U-Pb定年、块状硫化物、指示意义Introduction:The Hongtoushan copper-zinc mine is located in the northern part of the Liaoning province in China, and it is one of the largest mines in the Northeast China region. This deposit mainly consists of black cloud plagioclase hornblende schist. In this paper, the zircon U-Pb dating was carried out on the surrounding rocks of the deposit, and the age of the formation of the surrounding rocks was determined to be early Cretaceous (about 120 Ma). At the same time, it was found that there were a large number of sulfide minerals in the surrounding rocks, mainly including pyrite and sphalerite. Through the comparative analysis of regional geology, the study of the genesis of the deposit, and the geochemical analysis, it was found that these sulfide minerals were likely to have formed during the mineralization process of the deposit. Therefore, the content and distribution of pyrite and sphalerite can provide important indications for the exploration of the deposit.Methodology:The zircon U-Pb dating was carried out using the laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS), which provided a high level of precision for the age determination. The geochemical analysis of the surrounding rocks and the sulfide minerals was carried out using the X-ray fluorescence (XRF) and inductively coupled plasma mass spectrometry (ICP-MS) techniques.Results:The zircon U-Pb dating showed that the surrounding rocks of the Hongtoushan copper-zinc mine were formed in the early Cretaceous period, with an age of about 120 Ma. The sulfide minerals in the surrounding rocks mainly included pyrite and sphalerite. The content and distribution of pyrite and sphalerite were closely related to the formation and distribution of the deposit.Conclusion:The Hongtoushan copper-zinc mine in Liaoning province is surrounded by black cloud plagioclase hornblende schist, which was formed in the early Cretaceous period. The sulfide minerals in the surrounding rocks, especially pyrite and sphalerite, were likely to have formed during the mineralization process of the deposit. Therefore, the content and distribution of pyrite and sphalerite can provide important indications for the exploration of the deposit.Further studies have shown that the Hongtoushan deposit is a stratabound deposit that is closely related to the surrounding rocks. The orebodies are mainly composed of massive sulfide ores, with chalcopyrite being the dominant ore mineral and sphalerite, pyrite, and galena being the subordinate ore minerals. In addition, there are also small amounts of lead-zinc mineralization and some associated silver and gold.The geological characteristics and mineralization process of the Hongtoushan deposit are complex and not yet fully understood. However, the discovery of sulfide minerals in the surrounding rocks has shed new light on the formation and evolution of the deposit. It is believed that the sulfide minerals in the surrounding rocks were formed under hydrothermal conditions, and they were subsequently transported and deposited in the vicinity of the deposit during the mineralization process.These findings have significant implications for the exploration and development of the Hongtoushan deposit. By studying the content and distribution of sulfide minerals in the surrounding rocks, explorers can more accurately locate the potential orebodies and design more efficient exploration programs. In addition, the understanding of the formation and evolution of the deposit can also help researchers develop more effective and sustainable mining strategies.Overall, the study of the surrounding rocks of the Hongtoushan copper-zinc mine has provided valuable insights into the geology and mineralization process of the deposit. Further research is still needed to better understand the deposit and optimize mining strategies, but the findings have opened up new avenues for exploration and development in this important mining district.The Hongtoushan deposit is an important copper-zinc mine in China and has been actively explored and mined for many years. However, the deposit still has considerable potential for further development and needs to be studied in more detail. To fully understand the geological and mineralogical characteristics of the deposit, it is crucial to investigate the surrounding rocks and their relationship with the mineralization process.Various methods can be used to study the surrounding rocks, including field observations, geochemical analysis, and mineralogical analysis. Field observations can help to identify the lithology, structures, and alteration patterns of the r。