Abstract In this study obsidian samples from “Nychia” area of Milos Island (Greece) have been analyzed and characterized with various analytical techniques including polarizing microscopy, XRPD, SEM/EDS, ICP-MS and Raman Spectroscopy. The studied samples have a rhyolitic composition. Microliths (feldspars, silica oxide phases, hornblende, biotite and opaque minerals), constituting the well-defined crystalline phases, are surrounded by a glassy matrix, which constitutes an equally defined “amorphous phase”. In terms of texture, samples were divided into two groups, a healthy one and a partially devitrified one exhibiting perlitic texture, indicating the effect of locally different volcanic processes in the same narrow area. Furthermore, focused investigation relative to the microchemistry of the “amorphous phase” of the studied samples revealed that these data have satisfactorily discriminated the natural glasses of Nychia Milos source in Mediterranean area. Such results could also be used as the basis of a flexible method useful for trans-disciplinary problems dealing with the origin of obsidian artefacts. The Raman spectroscopy results of the Nychia samples offered insights into the use of the technique as a reliable nondestructive sourcing analytical tool. Moreover, the potential for a multifarious characterization of the glasses enhances further the geological research as well as the archaeological provenance issues of obsidians.

中文翻译：

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使用组合方法对源自 Nychia 地区（希腊米洛斯岛）的黑曜石进行表征的石油地球化学方法

摘要 本研究采用偏光显微镜、XRPD、SEM/EDS、ICP-MS 和拉曼光谱等多种分析技术对来自希腊米洛斯岛“Nychia”地区的黑曜石样品进行了分析和表征。研究的样品具有流纹岩组成。构成明确结晶相的微石（长石、氧化硅相、角闪石、黑云母和不透明矿物）被玻璃状基质包围，构成同样定义的“非晶相”。在质地方面，样品分为两组，健康一组和部分失透的一组呈现珍珠岩质地，表明在同一狭窄区域内局部不同的火山过程的影响。此外，针对所研究样品的“非晶相”的微化学重点调查表明，这些数据已经令人满意地区分了地中海地区 Nychia Milos 源的天然玻璃。这些结果也可以用作灵活方法的基础，该方法适用于处理黑曜石人工制品起源的跨学科问题。Nychia 样品的拉曼光谱结果提供了将该技术用作可靠的无损采购分析工具的见解。此外，对玻璃进行多种表征的潜力进一步增强了地质研究以及黑曜石的考古来源问题。这些结果也可以用作灵活方法的基础，该方法适用于处理黑曜石人工制品起源的跨学科问题。Nychia 样品的拉曼光谱结果提供了将该技术用作可靠的无损采购分析工具的见解。此外，对玻璃进行多种表征的潜力进一步增强了地质研究以及黑曜石的考古来源问题。这些结果也可以用作灵活方法的基础，该方法适用于处理黑曜石人工制品起源的跨学科问题。Nychia 样品的拉曼光谱结果提供了将该技术用作可靠的无损采购分析工具的见解。此外，对玻璃进行多种表征的潜力进一步增强了地质研究以及黑曜石的考古来源问题。