| 刘洋,高天,毛生录,曹生仓,李崇英,王统荣,文强,赵志新.基于三维建模的深部成矿预测——以青海锡铁山铅锌矿床为例[J].矿产勘查,2025,16(10):2262-2274 |
| 基于三维建模的深部成矿预测——以青海锡铁山铅锌矿床为例 |
| Prediction of deep mineralization based on 3D modeling: A case study of Xitieshan Pb-Zn deposit in Qinghai Province |
| 投稿时间：2024-11-12 |
| DOI：10.20008/j.kckc.202510004 |
| 中文关键词: 锡铁山铅锌矿床 隐式建模 矿化富集规律 找矿方向 三维成矿预测 |
| 英文关键词: Xitieshan Pb-Zn deposit implicit modeling mineralization and enrichment rule prospecting di.rection 3D metallogenic prediction |
| 基金项目:本文受国家自然科学基金青年科学基金项目(41902090)资助。 |
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| 中文摘要: |
| 锡铁山铅锌矿矿区位于柴北缘中段，是西北地区的大型矿床，因变质变形作用导致矿体形态复杂多变，使找矿工作难度加大。为查明矿体空间形态和矿物组分的空间分布情况，探究深部矿体存在的可能性，本文收集锡铁山矿区共 2960个钻孔及刻槽取样工程，应用三维建模软件建立了三维可视化钻孔模型、矿体模型、地质体模型以及品位块体模型等。结果表明，锡铁山矿体在北西侧品位较高，向南东侧逐渐降低；矿体整体呈左阶雁行排列方式分布；Ag元素与 Pb元素伴生明显，变化规律基本一致。综合矿床地质特征和矿体分布规律，推测深部仍有存在矿化富集带的可能，并圈定了 4个找矿有利地段，为下一步找矿工作提供参考和建议。 |
| 英文摘要: |
| The Xitieshan Pb-Zn deposit, located in the middle of the northern margin of Qaidam, the large de. posits in Northwest China. The morphology of the ore body is complex and changeable due to metamorphism and de.formation, makes prospecting more difficult. In order to find out the spatial form of ore body and the spatial distribu.tion of mineral components, the possibility of deep ore body is explored. A total of 2960 drilling and groove sam.pling projects in Xitieshan mining area are collected in this paper. 3D visual drilling model, orebody model, geologi.cal body model and grade block model are established by using 3D modeling software. The results indicate that theore grades are higher in the northwest and gradually decrease towards the southeast, with the orebody showing a left-stepping en echelon arrangement. The Ag and Pb elements are notably co-associated, displaying similar distribu.tion patterns. Based on the geological characteristics of the deposit and the distribution pattern of the orebody, it isinferred that there may still be zones of enriched mineralization at depth. Four favorable areas for further explorationhave been identified, provides reference and suggestion for the follow-up prospecting work. |
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