北铜带矿床的经济评估-波兰西南部未来的铜和银矿资源基地

IF 0.9 4区 地球科学 Q3 GEOLOGY
Tomasz BIEŃKO, Jan WIERCHOWIEC, Stanisław SPECZIK
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引用次数: 0

摘要

在波兰西南部的前苏台海单斜中,7个未开发的沉积层状铜银矿床构成了未来铜和银矿的资源基地。其中四个直到最近才被发现和记录:Nowa Sól, Sulmierzyce North, Mozów(形成北部铜带的一部分)和Żary。剩下的三个矿床——Bytom Odrzański、Głogów和Retków——围绕着目前已开采的新铜区(New Copper District)的西北部、北部和东北部。波兰铜银矿床是多金属矿床,目前已开采铜、银、铅、镍以及次要的铼和金。然而,它们显示出其他副产物金属,如钴、钼、钒、锌和稀土元素的高报告。计算了北铜带矿床的单位矿石价值,以每公吨矿石的美元表示,以便与其他未开发和开采的波兰沉积层状铜银矿床进行比较。所研究矿床的计算单位矿石价值主要受铜的影响,银的贡献很大(高达29%)。就铜以外的贱金属而言,它们对单位矿石价值的贡献相对较低,仅占总价值的1-11%。单位矿值中银、铅的比例呈现出一个趋势:在氧化区附近,银、铅的比例趋于较低,随着距离氧化区越来越远,银、铅的比例逐渐增加。另一方面,镍在单位矿石价值中的份额不受与氧化场的距离的影响。相反,它取决于页岩矿石的厚度和有机含量等因素,这些因素会影响有色金属、氧化还原敏感副产物金属(包括镍)的积累。此外,我们提供了波兰沉积层状铜银矿床的总单位矿值的比较分析。特别强调的是构成未来波兰西南部铜和银矿资源基础的矿床。从市场的角度强调金属价格波动对各种矿床的单位矿石价值的影响。通过考察金属价格的动态性质,该研究为了解市场条件的变化如何影响前苏台海单斜不同地区矿床的经济可行性提供了见解。构成波兰未来铜和银资源基础的矿床显示出非常高的铜和银品位,与其他不同类型的世界级矿床(如斑岩、浅成热液矿床和IOCG(氧化铁铜金矿)矿床相比,其单位矿石价值明显更高。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Economic assessment of the Northern Copper Belt deposits – a future resource base of copper and silver ores in SW Poland
Seven undeveloped sediment-hosted stratiform Cu-Ag deposits constitute a future resource base of copper and silver ores in the Fore-Sudetic Monocline in SW Poland. Among these, four have only recently been discovered and documented: Nowa Sól, Sulmierzyce North, Mozów (forming a part of the Northern Copper Belt) and Żary. The three remaining deposits – Bytom Odrzański, Głogów and Retków – surround the currently mined New Copper District to the north-west, north and north-east. Polish Cu-Ag deposits are polymetallic: copper, silver, lead, nickel as well as subordinate rhenium and gold are currently extracted. However, they show high reporting of other by-product metals, such as cobalt, molybdenum, vanadium, zinc and rare earth elements. Unit ore values expressed in US dollars per metric ton of ore have been calculated for deposits in the Northern Copper Belt to compare them with other undeveloped and mined Polish sediment-hosted stratiform Cu-Ag deposits. The calculated unit ore values for the deposits studied are primarily influenced by copper, with a significant contribution (up to 29%) from silver. In terms of base metals other than copper, their contribution to the unit ore values is here relatively low, accounting for only 1–11% of the total value. The proportions of silver and lead in the unit ore value show a trend: they tend to be lower in the vicinity of oxidized fields and gradually increase with distance from these oxidized areas. The share of nickel in the unit ore value, on the other hand, is not influenced by distance from the oxidized fields. Instead, it is dependent on factors such as the thickness and organic content of the shale ore, which affect the accumulation of non-ferrous, redox-sensitive by-product metals, including nickel. Furthermore, we provide a comparative analysis of the total unit ore value among Polish sediment-hosted stratiform Cu-Ag deposits. Particular emphasis is placed on the deposits that constitute the future resource base of copper and silver ores in southwest Poland. A market perspective is drawn to highlight the influence of metal price fluctuations on the unit ore values of the various deposits. By examining the dynamic nature of metal prices, the study offers insights into how changes in market conditions can impact the economic viability of deposits located in different parts of the Fore-Sudetic Monocline. The deposits that constitute the future resource base of copper and silver in Poland show remarkably high copper and silver grades, resulting in significantly higher unit ore values compared to other world-class deposits of different types such as porphyry, epithermal, and IOCG (iron oxide copper gold) deposits.
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来源期刊
Geological Quarterly
Geological Quarterly 地学-地质学
CiteScore
2.20
自引率
0.00%
发文量
19
审稿时长
>12 weeks
期刊介绍: The policy of the Geological Quarterly is to publish significant contributions of information and geological insight relevant to an international readership. The journal has been issued since 1957 at the Polish Geological Institute - National Research Institute and, at present, is the leading Earth sciences journal in Poland. All aspects of Earth and related sciences, and universal and broad regional rather than locally oriented topics are covered. The journal is intended to be an international forum for the exchange of information and ideas, particularly on important geological topics of Central Europe.
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