投稿时间：2024-08-28
修订日期：2024-12-31
网络发布日期：2025-03-10
中文摘要:江西崇义新安子钨锡矿床位于赣南“崇-余-犹”矿集区西华山-漂塘钨锡矿田，是赣南地区典型的石英脉型黑钨矿床。文章首先对矿区的4个中段进行坑道编录，对含矿石英脉组、脉体的空间展布形态、几何形态、结构面构造等方面进行仔细观测，并对矿脉及成矿后断裂产状统计分析；其次对5条勘探线剖面上5个中段的矿脉密度以及脉幅进行统计分析。结果显示：新安子矿床存在低温、高温2类石英脉。其中低温石英脉无矿化；高温石英脉具有白云母边，富含锡石、黑钨矿，且存在多期次特点。新安子矿区含矿石英脉主要呈NWW走向，倾向SSW，倾角为50°~85°；个别脉体呈NE走向，倾向NW，倾角为65°~78°；单条矿脉局部具波状弯曲、分枝复合、膨大缩小、尖灭侧现等特征，部分位置被后期断裂错动，并未影响矿脉的整体展布。结合区域构造背景综合分析认为：新安子矿区受到NW-SE向主应力挤压作用，产生一系列裂隙，被岩浆期后含矿热液充填成矿；成矿花岗岩体是从南东往北西方向侵入，推测新安子区段北部成矿潜力大，目前钻探已在龙潭面区段揭露出良好的工业矿体。
Abstract:The Xinanzi tungsten-tin deposit in Chongyi, Jiangxi, is located within the Xihuashan-Piaotang tungsten-tin ore field of the "Chongyi-Dayu-Shangyou" mineralized district in southern Jiangxi, representing a typical quartz-vein type wolframite deposit in the region. This study initially conducts tunnel mapping on four levels, meticulously observing the spatial distribution, geometric forms, and structural planes of the ore-bearing quartz vein groups and individual vein bodies. It also performs statistical analysis on the occurrences of the ore veins and post-mineralization faults. Additionally, statistical analysis is performed on the density and amplitude of the ore veins across five levels along sections at five exploration lines. Results indicate the presence of two types of quartz veins in the Xinanzi deposit: low-temperature and high-temperature. Low-temperature quartz veins are barren, while high-temperature quartz veins develop muscovite edges, are rich in cassiterite and wolframite, and display characteristics of multiple stages. The ore-bearing quartz veins in the Xinanzi deposit are primarily NWW trend and SSW dip, with inclinations ranging from 50° to 85°. A few vein bodies are NE trend and NW dip, with inclinations of 65° to 78°. Individual ore veins exhibit features such as wavy bending, branching and recombination, dilation and contraction, and lateral pinching. Some locations were later fractured and displaced, yet this did not affect the overall distribution pattern of the ore veins. A comprehensive analysis of the regional tectonic context suggests that the Xinanzi deposit area is subjected to NW-SE principal stress compression, leading to the formation of a series of fractures that were subsequently filled with post-magmatic ore-bearing hydrothermal fluids, thereby creating the ore bodies. The ore-related granite body at Xinanzi intruded from the southeast to the northwest, leading to speculation that the northern part of the Xinanzi section holds significant mineralization potential. Recent drilling has uncovered promising industrial ore bodies in the Longtanmian section.
keywords:tungsten and tin deposits fracture characteristics stress analysis stereographic projection Xinanzi Gannan
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基金项目:本文得到国家重点研发项目：南岭钨锡多金属矿集区三维综合探测与深部成矿预测项目（编号：2022YFC2905101）和国家自然科学基金项目(编号：42262026)共同资助
引用文本：
张海信,刘战庆,赵正,钟先源,郭淑庆,丁政,李赛赛.2025.江西崇义新安子石英脉型钨锡矿床控矿构造解析[J].矿床地质,44(1):203~214ZHANG HaiXin,LIU ZhanQing,ZHAO Zheng,ZHONG XianYuan,GUO ShuQing,DING Zheng,LI SaiSai.2025.Analysis of ore controlling structure of quartz vein tungsten-tin deposit in Chongyi, Jiangxi[J].Mineral Deposits44(1):203~214
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