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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蕴藏着一些世界上最壮观且具有历史意义的贵金属（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浅成热液银-金矿化的选定代表性地点进行详细研究。从历史上看，这是欧洲最重要的中世纪贵金属供应商之一；目前，开采仅限于最后一个活跃矿井。尽管进行了两千年的密集开采，但有关贵金属矿石的矿物学和成矿作用的信息却基本上缺失。拟议的研究旨在通过矿物学和地球化学方法的适当组合来评估所选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。在本研究中，我们选择了“经典”Ag-Au (Ag:Au 20:1 - 100:1) 矿化和一种新颖的、先前未知的 (Ag:Au - 1:1) 矿化。在拟议的工作中，我们将使用从地表收集的样本，但更重要的是，我们的合作者从勘探公司 EMED 收集的钻芯样本。钻芯样本为研究区域的矿化提供了独特的见解；可用于我们研究的 10 多个钻芯为评估交叉矿石结构提供了绝佳的机会，并有助于我们了解这一大型火山结构及其矿石矿化。这项研究有两个最终目标，即：i）为所研究的矿化体建立成因模型，并将该模型纳入整个火山结构的演化方案；ii）根据其经济潜力对所研究的矿化体进行分类和区分。