The lead and copper isotopic composition of copper ores from the Sierra Morena (Spain)
The lead and copper isotopic composition of copper ores from the Sierra Morena (Spain)
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莫雷纳山脉（西班牙）铜矿石的铅和铜同位素组成
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
H. V. Kaenel
中科院分区：
文献类型：
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作者：
S. Klein;C. Domergue;Y. Lahaye;G. Brey;H. V. Kaenel
本文介绍了来自西班牙南部莫雷纳山脉的 51 个铜矿石样品的铅和铜同位素分析。它们来自伊比利亚半岛的古代矿山，由克劳德·多梅尔格 (Claude Domergue) 在 1965 年至 1975 年期间在莫雷纳山脉中部的各种实地考察中收集。大多数样品由孔雀石、蓝铜矿和硅孔雀石等氧化铜矿物组成，来自矿床的地表部分。该研究的目的是补充伊比利亚半岛古代铜矿铅同位素组成的现有参考数据库。这对于莫雷纳山脉尤其重要，该地区的数据主要是铅锌矿，而不是铜矿石。铅同位素比范围为 18.165 至 19.712 (206Pb/204Pb)、0.797 至 0.859 (207Pb/206Pb) 和 1.955 至 2.108 (208Pb/206Pb)。可以区分两个独立的矿场，一个主要矿场介于西班牙西南部和东南部的矿床之间，第二个矿场的 208Pb/206Pb 值较高。另外还分析了铜同位素，为来源研究提供进一步的限制。氧化铜样品的铜同位素比δ65Cu大多为正值，平均高于硫化物矿物。它们是区分硫化矿或氧化矿床衍生文物的潜在工具。
The paper presents lead and copper isotope analyses of 51 copper ore samples from the Sierra Morena, South of Spain. They are from ancient mines of the Iberian Peninsula collected by Claude Domergue during various field campaigns in the central Sierra Morena from 1965 to 1975. Most samples consist of copper oxide minerals such as malachite, azurite and chrysocolla and stem from the surficial sections of the ore deposits. The aim of the study was to supplement the existing reference data bank on lead isotopic compositions of ancient copper mines from the Iberian Peninsula. This is particularly important for the Sierra Morena for which data exist mostly for lead-zinc but not for copper ores. The lead isotope ratios range from 18.165 to 19.712 (206Pb/204Pb), 0.797 to 0.859 (207Pb/206Pb) and 1.955 to 2.108 (208Pb/206Pb). Two separate fields can be distinguished with a major field intermediate between the ore deposits from SW and SE Spain and a second at higher 208Pb/206Pb values. Copper isotopes were analysed additionally to provide further constraints for provenance studies. The copper isotope ratios δ65Cu of the copper oxide samples are mostly positive and higher on average than those of sulphide minerals. They are a potential tool to distinguish between either sulphide ore or oxide ore deposit derived artefacts.