胶东冲积土覆盖区细粒土探矿法隐伏金矿床勘查指示及其纳米级金属迁移证据

IF 3.4 2区 地球科学 Q1 GEOCHEMISTRY & GEOPHYSICS
Hanliang Liu , Bimin Zhang , Xueqiu Wang , Qiang Wang , Yude Du , Baoyun Zhang , Yubin Cui , Jian Zhou , Bin Liu , Jie Li
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引用次数: 0

摘要

胶东在全球三个黄金储量超过 5000 吨的省份中脱颖而出。随着该地区地质勘探工作的不断深入,胶东深部和覆盖区的找矿意义日益凸显。本研究在位于山东省烟台市、被冲积土掩盖的曲家隐伏金矿床及其周边地区采用了细粒土法找矿。金(Au)含量显示出较高的富集水平,Au 和银(Ag)地球化学异常的范围与已知隐伏矿体具有很强的相关性。此外,还利用透射电子显微镜和纳米 CT 鉴定了壁岩中的纳米级金属颗粒和微裂缝。观察到地表介质中的成矿元素纳米微米金属颗粒与深部矿体之间存在遗传关系。在胶东瞿家金矿建立了以纳米微米金属颗粒为形式的深部成矿物质迁移模型,该模型受以上升地气流为主的多代理接力控制。这些发现为冲积土覆盖区地球化学勘探中的细粒土壤找矿方法提供了理论支持。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Exploration indication of hidden gold deposits using the fine-grained soil prospecting method and its nano-micron metal migration evidence in the alluvial soil covered area, Jiaodong

Jiaodong stands out among three global provinces boasting gold reserves surpassing 5000 tons. As geological exploration in the region continues to rise, the significance of deep and covered areas in Jiaodong for ore prospecting becomes increasingly evident. In this study, a Fine-grained soil prospecting method was employed in the Qujia hidden gold deposit and its surrounding region, situated in Yantai City, Shandong Province, and concealed by alluvial soil. The gold (Au) content exhibited a high enrichment level, and the range of Au and silver (Ag) geochemical anomalies demonstrated a robust correlation with known hidden orebodies. Furthermore, transmission electron microscopy and nano-CT were utilized to identify nano-micron metal particles and micro-fractures in the wall rock. A hereditary relationship between the nano-micron metal particles of ore-forming elements present in surface media and the deep orebody was observed. A migration model detailing the movement of deep ore-forming materials in the form of nano-micron metal particles, governed by a multi-agent relay dominated by ascending geogas flow, was established in the Qujia gold deposit in Jiaodong. These findings contribute theoretical support for the fine-grained soil prospecting method in geochemical exploration within alluvial soil covered areas.

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来源期刊
Journal of Geochemical Exploration
Journal of Geochemical Exploration 地学-地球化学与地球物理
CiteScore
7.40
自引率
7.70%
发文量
148
审稿时长
8.1 months
期刊介绍: Journal of Geochemical Exploration is mostly dedicated to publication of original studies in exploration and environmental geochemistry and related topics. Contributions considered of prevalent interest for the journal include researches based on the application of innovative methods to: define the genesis and the evolution of mineral deposits including transfer of elements in large-scale mineralized areas. analyze complex systems at the boundaries between bio-geochemistry, metal transport and mineral accumulation. evaluate effects of historical mining activities on the surface environment. trace pollutant sources and define their fate and transport models in the near-surface and surface environments involving solid, fluid and aerial matrices. assess and quantify natural and technogenic radioactivity in the environment. determine geochemical anomalies and set baseline reference values using compositional data analysis, multivariate statistics and geo-spatial analysis. assess the impacts of anthropogenic contamination on ecosystems and human health at local and regional scale to prioritize and classify risks through deterministic and stochastic approaches. Papers dedicated to the presentation of newly developed methods in analytical geochemistry to be applied in the field or in laboratory are also within the topics of interest for the journal.
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