| 陈宏强.新疆东准乌伦布拉克斑岩型铜矿床元素迁移规律研究及成矿预测[J].地质与勘探,2015,51(6):1138-1149 |
| 新疆东准乌伦布拉克斑岩型铜矿床元素迁移规律研究及成矿预测 |
| Regularities of element migration and metallogenic prediction in the Wulunbulake porphyry copper deposit, Eastern Junggar, Xinjiang |
| 投稿时间：2015-04-30 修订日期：2015-09-20 |
| DOI： |
| 中文关键词: 成矿指示元素 质量迁移 多维异常体系 成矿预测 乌伦布拉克 新疆 |
| 英文关键词: indicator elements, mass transfer, multidimensional anomaly system, metallogenic prognosis, Wulunbulake, Xinjiang |
| 基金项目:中国地质调查局地质矿产调查评价项目（1212011120525）资助 |
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| 中文摘要: |
| 乌伦布拉克铜矿床位于新疆东准北塔山地区，是中亚—兴蒙斑岩铜矿带的一部分，近年来在该带上境外发现了多处大型铜矿床。我国新疆北部斑岩型铜矿床也取得突破，相继发现了希勒库都克、哈腊苏、琼河坝等斑岩型铜矿床，拥有良好的找矿前景，因此乌伦布拉克铜矿床很值得进一步深入研究。本文通过对新疆乌伦布拉克铜矿床中15种微量元素和9种常量元素含量的系统研究，总结出元素富集贫化特征，并对这些元素含量随着主成矿元素Cu含量变化的规律性进行了探讨，筛选出指标元素，对这些元素进行迁移量计算。以试验区04勘探线剖面为例，以多维异常体系为指导，对元素空间分布特征和成矿与未成矿地段地球化学特征差异进行初步的讨论。结果表明：赋矿闪长岩体中元素带入带出特征明显。成矿阶段发生明显带入的元素包括S、Cu、Ag、As、Sb、Mo、W和Se，以及H2O+等，发生明显带出的元素包括Ba、Sr、Rb、Fe2O3等，带出元素形成的负异常范围更大，涵盖了带入元素形成的正异常。综合利用不同属性的异常，不仅直接有效地指示矿（化）体产出位置，也为试验区进一步找矿提供了方向。 |
| 英文摘要: |
| The Wulunbulake copper deposit is located in the Beita Mountain region of eastern Xinjiang, part of the Central Asia-Xingmeng porphyry copper belt. In recent years, several large copper deposits have been found in this belt beyond the border. Prospecting the porphyry copper deposit in northern Xinjiang has also made a breakthrough, with some deposits found such as those at Xilekubuke, Halasu, and Qiongheba. Therefore the Wulunbulake deposit is worthy further studying. In this paper, through the systematic study of 15 kinds of trace elements and the 9 major elements in the deposit, we sum up the characteristics of element enrichment and depletion, and the regularity of the contents of these elements changing with main ore-forming elements of Cu to select index elements. Then we calculate migration amounts of these elements. Taking No. 04 prospecting line section as an example, using the multidimensional anomaly system as the guidance, we further analyze the spatial distribution characteristics of metallogenic elements and geochemical characteristics and the difference of the area without mineralization. The results show that the ore diroite input and output elements have obvious characteristics. In the metallogenic stage, the significantly brought in elements included S, Cu, Ag, As, Sb, Mo, W, Se, and H2O+, while the elements brought out included Ba, Sr, Rb, and Fe2O3, with a larger range of negative anomalies caused by the elements, covering the positive elements brought in. The comprehensive utilization of the different attributes of the anomalies can effectively indicate not only the ore body (mineralization) location, but also the direction of further prospecting in the test area. |
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