投稿时间：2025-01-08
修订日期：2025-06-16
网络发布日期：2025-08-26
中文摘要:重晶石是中国重要的战略性非金属矿产资源，广泛应用于化工、冶金、医药等行业。扬子板块周缘重晶石矿床类型多样，主要为沉积型和热液脉型。沉积型重晶石矿床的形成受特定地层、岩性组合和岩相古地理的共同控制。时间分布上，重晶石矿成矿地质时代跨度较大，从古元古代开始，到新近纪的地层中均有产出，但主要集中于古生代。空间分布上，重晶石矿可大致划分为两个成矿区域，扬子板块北缘秦岭-大巴地区和东南缘江南地区。重晶石矿床受古地理环境和古海洋化学结构以及强烈的生物作用影响，在寒武纪黑色页岩中广泛分布。目前，扬子周缘重晶石矿床的研究存在一定的局限性：一方面，古地理环境与沉积条件之间的耦合关系尚未明晰，精细的系统性地球化学示踪与微生物作用研究薄弱，导致对成矿过程的分析缺乏多维度的约束；另一方面，不同构造背景下的成矿流体运聚机制存在差异，未进行细致刻画，严重阻碍了区域成矿模型的统一构建。在前人的研究基础上，文章提出对重晶石矿床的研究展望：其一，在开展精细矿物学研究的基础上，进行微纳米到原子尺度矿物学工作，对矿床中不同矿物进行高空间分辨率的原位分析，以揭示重晶石与毒重石的沉淀条件及共生机制，进而深入探讨成矿机制。其二，开展多学科相结合的综合研究，特别是将矿床成因的研究与早期生命、古环境的研究相结合，从而深化对黑色页岩中重晶石矿床成因的多角度认识。
Abstract:Barite is an important strategic non-metallic mineral resource in China, which is widely used in chemical industry, metallurgy, medicine, and other fields. There are various types of barite deposits around the Yangtze Platform, of which the sedimentary and hydrothermal vein types are the most common. The formation of sedimentary barite deposits was generally associated with particular stratigraphic position, lithological assemblages, and lithofacies paleogeography. Temporally, the metallogenic age of barite deposits spans from Paleoproterozoic to Neogene, and the most significant stage of metallogenesis occurred during Paleozoic. Spatially, two major metallogenic regions have been identified around the Yangtze Platform, the Qinling-Daba metallogenic region on the northern margin of the Platform and the Jiangnan area on the southeastern margin. The barite deposits are widely distributed in Cambrian black shale around the Yangtze Platform due to the paleogeographic environment, paleo-oceanic chemical compositions, and strong biological effects. Currently, research on barite deposits in the northern and southeastern margins of the Yangtze Platform faces several limitations: First, the coupling between paleogeographic environments and sedimentary conditions remains unclear, and the lack of systematic geochemical tracing and microbial process studies has resulted in insufficient multi-dimensional constraints on analysis of metallogenic process. Second, the divergent migration and accumulation mechanisms of ore-forming fluids under distinct tectonic settings have not been thoroughly characterized, significantly hindering the construction of a unified regional metallogenic model. Based on previous studies, this paper proposes research prospects for barite deposits. Firstly, it suggests to conduct micro-nano to atomic-scale mineralogical research, in-situ analyses of various mine-rals within the deposit should be performed, utilizing high spatial resolution techniques. This study seeks to elucidate the precipitation conditions and paragenetic mechanisms of barite and witherite, while also advances our understanding of the underlying metallogenic processes. Secondly, this study uses a comprehensive, multidisciplinary approach that integrates the study of deposit genesis with paleontological and paleoenvironmental research. This combined research aims to enhance our understanding on the genesis of barite deposits hosted in black shale from multiple perspectives.
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基金项目:本文得到国家自然科学基金项目（编号：U24A20601）和陕西省青年科技新星项目（编号：2023KJXX-037）联合资助
引用文本：
王雨,刘鹏,常超,曹林杰,江丞曜,赵凤上,韩广睿,张兴亮.2025.扬子板块周缘重晶石矿床研究进展、问题与展望[J].矿床地质,44(4):733~755WANG Yu,LIU Peng,CHANG Chao,CAO LinJie,JIANG ChengYao,ZHAO FengShang,HAN GuangRui,ZHANG XingLiang.2025.Research progress, problems and prospects of barite deposits around Yangtze Platform[J].Mineral Deposits44(4):733~755
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