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Precious-metal ore mineralizations in central Slovak volcanic field

斯洛伐克中部火山田的贵金属矿化

基本信息

批准号：
186273609
负责人：
Professor Dr. Juraj Majzlan, Ph.D.
金额：
--
依托单位：
Lehrstuhl Allgemeine und Angewandte Mineralogie
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2010
资助国家：
德国
起止时间：
2009-12-31 至 2013-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/186273609?language=en
关键词：
Precious metal ore mineralizations central

项目摘要

Epithermal hydrothermal deposits, related to volcanic activity, host some of the world's most spectacular and historically significant deposits of precious (Ag, Au) and base (Pb, Zn, Cu) metals. Here I propose to carry out a detailed study of selected representative localities of epithermal Ag- Au mineralization in the Tertiary volcanic complex of central Slovakia. Historically, this was one of the most Important Medieval supplier of precious metals in Europe; currently, the exploitation is limited to one last active mine. Despite two millennia of intensive mining, information about mineralogy and metallogenesis of the precious-metal ores is largely missing. The proposed research seeks to evaluate mineralogy and geochemistry of the selected mineralizations, geochemistry and style of the hydrothermal alteration, and physico-chemical conditions of the ore-forming fluids by an appropriate combination of mineralogical and geochemical methods. For this study, we have chosen a "classical" Ag-Au (Ag:Au 20:1 - 100:1) occurrence and a novel, previously unknown (Ag:Au - 1:1) mineralization. In the proposed work, we will use samples collected from the surface but, more importantly, drill cores samples amassed by our collaborators from an exploration company EMED. The drill core samples offer unique insights in the mineralizations in the studied region; more than 10 drill cores available for our research provide an exceptional opportunity to assess the intersected ore structures and to contribute to our knowledge of this large volcanic structure and its ore mineralization. There are two ultimate goals of this research, that is, i) to formulate a genetic model for the studied mineralization and incorporate the model into the evolution scheme of the entire volcanic structure, and ii) to classify and distinguish the studied mineralizations in terms of their economic potential.

与火山活动有关的浅成热液矿床拥有一些世界上最壮观和历史上最重要的贵重金属（银、金）和贱金属（铅、锌、铜）矿床。在这里，我建议对斯洛伐克中部第三纪火山杂岩中选定的具有代表性的浅成热液银金成矿地点进行详细研究。从历史上看，它是中世纪欧洲最重要的贵金属供应商之一；目前，开采仅限于最后一个活跃的矿山。尽管经过两千年的密集开采，有关贵金属矿石的矿物学和成矿作用的信息在很大程度上是缺失的。建议的研究旨在通过矿物学和地球化学方法的适当结合，对选定矿化的矿物学和地球化学、热液蚀变的地球化学和类型以及成矿流体的物理化学条件进行评价。在这项研究中，我们选择了一个“经典的”Ag-Au （Ag:Au 20:1 - 100:1）矿床和一个新的，以前未知的（Ag:Au - 1:1）矿化。在提议的工作中，我们将使用从地表收集的样本，但更重要的是，我们的合作者从一家勘探公司EMED收集了岩心样本。岩心样品对研究区域的成矿作用提供了独特的见解；超过10个钻孔岩心可用于我们的研究，为评估相交的矿石结构提供了一个绝佳的机会，并有助于我们了解这个大型火山结构及其矿石成矿作用。本研究的最终目的有两个，一是建立所研究矿化的成因模型，并将其纳入整个火山构造的演化方案；二是对所研究的矿化进行经济潜力分类和区分。