| 姜伟,令狐东,宫学智.贵州三都排正金矿床成矿元素赋存规律及成矿潜力评价[J].地质找矿论丛,2021,36(2):152-158 |
| 贵州三都排正金矿床成矿元素赋存规律及成矿潜力评价 |
| Occurrence of ore elements and the potential evaluation of Paizheng gold deposit in Sandu county, Guizhou province |
| 投稿时间：2020-11-02 |
| DOI：10.6053/j.issn.1001-1412.2021.02.003 |
| 中文关键词: 金矿床 赋存规律 成矿作用 成矿潜力 排正 贵州省 |
| 英文关键词:gold deposit law of occurrence mineralization mineralization potential Paizheng Guizhou Province |
| 基金项目:贵州省地质勘查基金项目"贵州省极贫乡（镇）地质资源调查"（编号：PYZB2017-C112）资助。 |
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| 中文摘要: |
| 贵州三都—丹寨Hg-Au-Sb成矿带大地构造位于扬子克拉通黔南台陷与华南褶皱带西缘交界处，成矿带内断裂构造极其复杂，矿体延伸、展布明显受构造控制。排正金矿床位于该成矿带中南段，对其成矿有利靶区进行成矿元素地球化学样品分析，探讨成矿元素相关性和赋存状态，反演成矿机制。分析结果显示：①矿石中Au元素与As、Pb+Zn、Hg元素均具有正相关性，与Mo元素相关性不强；As元素与Hg、Pb+Zn、Mo元素均具有正相关性，表明矿床内载金矿物主要为毒砂。②该金矿床成矿物质主要来源于深部高温含矿岩浆热液，在热液沿构造断裂上移过程中萃取古老地层中成矿元素，As离子作为活化剂，在还原环境下富集成矿。③排正金矿床为一处以Au、Pb、Zn金属元素为主的多金属矿床，应加大对伴生Hg、Mo等金属元素的含矿性评价。 |
| 英文摘要: |
| Geotectonicaly Sandu-Danzhai Hg-Au-Sb metallogenic belt in Guizhou province is located at the junction of the Southern Guizhou Platform Depression and the western margin of the South China fold belt in the Yangzi Craton. The fault structure in the metallogenic belt is extremely complex and controls the extension and distribution of ore bodies. The Paizheng gold deposit is located in the central-south part of the metallogenic belt. Ore elements of samples from prospecting targets are geochemically analyzed to discuss their correlation and occurrence and inverse the mineralization mechanism.The analysis shows that Au is positively correlated with As, Pb+Zn, and Hg and not strongly correlated with Mo; As positively correlated with Hg, Pb+Zn, and Mo indicating that arsenopyrite is the main Au-carrier. Based on the characteristics of regional tectonic evolution, it is believed that the ore-forming material comes from the extraction of ore-forming elements from ancient strata during moving of deep high-temperature ore-bearing magmatic hydrothermal fluid along fault. As ions are the activation agent and Au is enriched to form ore in a reducing environment. Correlation analysis of the metallogenic elements shows that the Paizheng gold deposit is a Au, Pb, and Zn-dominated polymetallic deposit and evaluation of the by-product of Hg, Mo and other metal elements should be strenthened. |
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