【作者】 王子正；

【导师】 唐菊兴；

【作者基本信息】 成都理工大学 ， 矿产普查与勘探， 2007， 硕士

【摘要】 本文通过对西藏谢通门县雄村铜金矿集区典型矿床(雄村、洞嘎普、则莫多拉等)的地质特征、构造特征以及成矿元素地球化学分布特征的深入研究，以及通过分析矿集区不同地质单元内矿化元素的成矿元素地球化学背景、分布特征、组合特征和富集规律，从而预测下一步重点工作区域和找矿方向。谢通门县雄村铜金矿集区位于我国重要的斑岩型铜矿找矿远景区之一—冈底斯成矿带。整个矿集区受构造影响强烈，矿体为走向近东西或北东东的谢通门—努玛韧性—脆性断裂带控制，或被其次一级的北西向、北东向构造所控制。含矿岩性为晚侏罗世侵位的具眼球状石英斑晶的石英闪长斑岩及致密块状硅化凝灰岩，区内岩浆热液活动频繁，蚀变强烈，主要表现为硅化、绢云母化、钾化、绿帘石化、电气石化、角岩化、高岭土化等，部分矿区的蚀变分带比较明显。矿石组构主要为以充填交代作用为主，矿石矿物主要为黄铁矿、黄铜矿、孔雀石、闪锌矿、方铅矿和银金矿等，矿物的标型特征显示了低温成矿的特点。通过对矿集区进行的1：5万水系沉积物测量，对矿集区内部分矿化异常良好的区域已经开展了1：1万的土壤地球化学测量，并发现与之吻合良好，异常总体呈东西向离散孤岛状分布。结果显示金、铜、铅、锌等元素具有强度大，套叠好的特点。同时新发现5个铜(金)成矿远景区：吉拉铜(金)成矿远景区、巴弄拉铜成矿远景区、汤白铜成矿远景区、塘河铜金成矿远景区、烈朗铜金成矿远景区，经过以上工作，作者对其今后的工作和进一步的找矿方向提出了一些建议。同时，鉴于雄村大型斑岩型铜(金)矿床的发现，以及相邻的洞嘎普铜(金)矿出现的隐爆角砾岩筒型金矿，则莫多拉、吉拉等矿点均出现矽卡岩型铜矿化，所以在矿集区各矿(矿化)点找斑岩型矿床有很大的前景。更多还原

【Abstract】 The paper bases on the Xiongcun copper-gold ore deposit clusters and carries studies on Xiongcun, Donggapu, Zemoduola ore deposit and so on. Through analyzing the geological, geochemical feature and ore-forming elementary geochemistry backgound of them, and integrate with the enrichment and distributing rules, combination characters of different geological sections in Xiongcun copper-gold ore deposit, the auther probe into the metallogenic rules and prognosis of the the Xiongcun copper-gold ore deposit clusters.Xiongcun copper-gold ore deposit clusters is located in Gangdese metallogenetic belt which is consider as one of the most prospective belts of porphyry copper ore deposit. The whole clusters is strongly controlled by the structures, which is the Xietongmen-Numa ductile-brittle fracture zone, or its secondary fracture zone of north-west or north-east direction. The pay rock is quartz-diorite-porphyry and compacted massive silicified tuff which invased by later Jura. There are intensive structural and magmatic hydrothermal movement with obvious zonal alterations, which are demonstrated by silicification, sericitization, potassium, epidotization, hornstone, etc. Take the Xiongcun ore district for example, the alterations zonation is silicification zone, sericitization zone, chloritation zone from the inner to the outer. The ore structure and the fabric mainly behaves in fillism and metasomatism, the main minerals of ore are pyrite, chalcopyrite, malachite, blende, salenite and electrum, which typomorphic feature shows a hypothermal pattern of metallogeny.The technology and method of geochemical exploration has played an important part in the exploration of the the Xiongcun copper-gold ore deposit clusters, through the 1:50000 stream sediment survey, and the1:10000 soil survey in some of them, and we find that the fact is anastomotic with the abnormality. The abnormality of the metallogenic elements such as Au, Ag, Cu, Pb, Zn appear to be the large intensity and good intussusception. There are 5 metallogenic prospectives discovered, they are Jila, Banongla, Tangbai, Tanghe, Lielang, all of them appears to be the island shape and distributes in east-west direction wholly. Through all the work, the auther probe into the metallogenic rules and prognosis of the the Xiongcun copper-gold ore deposit clusters simply.Secondly, because of the discovery of the large-scale porphyry copper ore deposit in Xiongcun, the neighboured Donggapu Cu-Au ore deposit has found the cryptoexplosion breccia type gold deposit, and also skamize mineralization appears almost all the clusters including Zemoduola, Jila and Tangbai ore districts, there are great prospective of finding porphyry copper ore deposits in all pat of the clusters.更多还原