| 马忠元,马强,张岩,奎明娟,莫生娟.东昆仑哈日扎矿床地质特征与综合勘查标志[J].矿产勘查,2025,16(8):1952-1962 |
| 东昆仑哈日扎矿床地质特征与综合勘查标志 |
| Geological characteristics and comprehensive exploration marks of Harizha deposit in east Kunlun |
| 投稿时间：2023-09-14 |
| DOI：10.20008/j.kckc.202508011 |
| 中文关键词: 银多金属矿床 矿床成因 综合勘查标志 斑岩成矿系统 哈日扎中图分类号:P618.4文献标志码:A文章编号:1674-7801(2025)08-1952-11 |
| 英文关键词: silver polymetallic deposit genesis of deposit comprehensive survey indicationt porphyry metallo-genic system Harizha |
| 基金项目:本文受青海省第三地质勘查院自筹科研项目“东昆仑斑岩成矿系统研究”(SKYZC-2022-007)与青海省昆仑英才“高端创新创业人才计划”项目“青藏高原北缘三叠纪斑岩铜多金属矿成矿作用研究”(青地矿[2024]118号)联合资助。 |
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| 中文摘要: |
| 哈日扎矿床是东昆仑成矿带东段地区近年来发现的一处大型银铜铅锌复合矿床。本文在总结区域地质、矿区地质和矿床地质特征的基础上，分析了控矿因素，探讨了矿床形成机制及成矿模式，并结合已有物化探找矿成果建立起矿床综合勘查标志。研究表明，哈日扎地区具有斑岩型-浅成低温热液脉型-矽卡岩型矿床成矿系列的特征，花岗斑岩为区内成矿母岩，北西向断裂构造及其派生的北东向构造为热液脉型铜铅锌银矿的主要容矿空间，岩体与金水口岩群大理岩地层接触带为矽卡岩型铁铜矿的主要赋存部位。区内矿石类型以铅锌银矿石和铜铅锌银矿石为主，热液脉型银多金属矿体的蚀变矿化期次可分为热液早期、热液晚期和表生氧化期。综合勘查标志表现为:在地表呈“火烧皮”现象和孔雀石化、硅化的矿化蚀变地段，NW向断裂构造及其派生的 NE构造带，Pb、Zn、Ag、Cu元素套合性好、强度高且分带明显的地球化学异常地段，视极化率值大于 4%、视电阻率值小于 400 Ω·m的带状激电异常区多富集成矿。该研究结果可为开展区域成矿规律研究和找矿勘查工作提供依据。 |
| 英文摘要: |
| The hariza deposit is a large copper-lead-zinc-silver complex deposit discovered in the eastern sec-tion of east Kunlun metallogenic belt in recent years. On the basis of summarizing the characteristics of regional ge-ology, mining area geology and ore deposit geology, this paper analyzes the ore-controlling factors and the genesis ofore deposits, discusses the formation mechanism and metallogenic model of ore deposits, and establishes a compre-hensive exploration index of ore deposits in combination with the existing physical and chemical prospecting re-sults. The research shows that the Hariza area has the characteristics of porphyritic-epigenous low-temperature hy-drothermal dike-skarn type deposit metallogenic series, granite porphyry is the ore-forming parent rock in the area,and the NW-trending fault structure and the derived NE structure is the main ore-hosting space of the hydrother-mal vein-type Cu-Pb-Zn-Ag deposit, and the contact zone between the rock mass and the marble strata of the Jins-huikou Group is the main occurrence location of the skarn-type iron-copper deposit. The ore types in the area aremainly Pb-Zn-Ag and Cu-Pb-Zn-Ag. The alteration and mineralization stages of hydrothermal vein type silverpolymetallic ore bodies can be divided into early hydrothermal period, late hydrothermal period and supergene oxi-dation period. The signs of comprehensive exploration are as follows: on the surface, the phenomenon of "burningskin" and malachite and silicified mineralized alteration sections, NW-trending fault structures and their derivedNE structural belts, and good compatibility of Pb, Zn, Ag, and Cu elements In geochemical anomaly areas with highintensity and obvious zoning, the banded IP anomaly areas with apparent polarizability greater than 4 % and appar-ent resistivity less than 400 Ω·m are rich in mineralization. The research results provide a basis for the study of re-gional metallogenic regularity and ore prospecting and exploration. |
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