Characteristics and Deep Mineralization Prediction of the Langmuri Copper–Nickel Sulfide Deposit in the Eastern Kunlun Orogenic Belt, China

IF 2.2 4区 地球科学 Q2 GEOCHEMISTRY & GEOPHYSICS
Minerals Pub Date : 2024-07-31 DOI:10.3390/min14080786
Cai Ma, Baochun Li, Jie Li, Peng Wang, Ji’en Dong, Zhaoyu Cui, Shunlong Yang
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Abstract

The discovery of a Cu-Ni sulfide deposit in Langmuri of the Eastern Kunlun Orogenic Belt holds significant geological implications. This study, based on the examination of the metallogenic geological body, metallogenic structure, and metallogenic process characteristics, suggests that the deposit is a magmatic Cu-Ni sulfide deposit formed in the collision of orogenic and post-extension processes of the Late Ordovician. The early mineralization of the deposit was primarily derived from the differentiation of sulfides in the mafic–ultramafic rock (450–439 Ma) of the Late Ordovician, while the late-stage mineralization underwent significant superimposed modification by the magmatic–hydrothermal activity of crustal-contaminated biotite granite (415 Ma). In addition, this article analyzes the measurements of the geochemical studies of sediments, and the magnetic and gravity measurements carried out in the area, focusing on the geochemical and geophysical anomaly characteristics in the study area, and selects favorable exploration areas, which have been confirmed to have multiple mineral bodies. By integrating comprehensive gravity, magnetic, induced polarization, and audio-frequency magnetotelluric profile measurements, this study analyzes delineated mineralized zones and the deep extensions of surface mineral bodies to assess deep mineralization potential and identify deep ore-finding targets. It suggests that diverse and scattered mafic–ultramafic complexes in the Langmuri mining area have a large-scale distribution of ore-bearing rocks in the deep. Through the analysis and inverse of the geophysical data, a deep mineralization predictive model was established in the basic–ultrabasic rock mass. The study presents prospects for the delineation of the deep-seated mineralization in the Langmuri deposit.
中国东昆仑造山带郎木里硫化铜镍矿床特征及深部成矿预测
东昆仑造山带郎木里铜镍硫化物矿床的发现具有重要的地质意义。本研究基于对成矿地质体、成矿构造和成矿过程特征的考察,认为该矿床是晚奥陶世造山运动和后扩张过程碰撞形成的岩浆型硫化铜镍矿床。矿床的早期矿化主要来源于晚奥陶世黑云母-超黑云母岩(450-439 Ma)中硫化物的分化,而晚期矿化则经历了地壳污染生物花岗岩(415 Ma)的岩浆-热液活动的显著叠加改造。此外,本文还分析了沉积物地球化学研究的测量结果,以及在该地区开展的磁力和重力测量,重点研究了研究区的地球化学和地球物理异常特征,并选择了有利的勘探区,这些勘探区已被证实具有多个矿体。该研究综合了重力、磁力、感应极化和声频磁测曲线测量结果,分析了已划定的矿化带和地表矿体的深部延伸,以评估深部矿化潜力并确定深部找矿目标。研究表明,郎木里矿区多样而分散的黑云母-超黑云母复合体在深部有大规模的含矿岩石分布。通过对地球物理数据的分析和反演,在基性-超基性岩体中建立了深部成矿预测模型。该研究为郎木里矿床深部矿化的划分提出了展望。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Minerals
Minerals MINERALOGY-MINING & MINERAL PROCESSING
CiteScore
4.10
自引率
20.00%
发文量
1351
审稿时长
19.04 days
期刊介绍: Minerals (ISSN 2075-163X) is an international open access journal that covers the broad field of mineralogy, economic mineral resources, mineral exploration, innovative mining techniques and advances in mineral processing. It publishes reviews, regular research papers and short notes. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced.
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