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- W146387835 abstract "Fire assay is the quantitative determination of metals of economic interest present in samples of ores, alloys or other metallurgical products. When assaying for gold and/or silver, the process normally comprises a sequence of specialised high-temperature reactions to first liberate the precious metals from their original host matrix and transfer them into a quantity of lead metal, which is acting as a collector, before separating them from the lead in an oxidising process, and finally parting gold from silver. The practice of fire assay was greatly developed during the late Middle Ages achieving high degrees of precision and accuracy. This analytical tool was relevant for extractive metallurgy as much as for chymistry, for quality control in coin production and metals trade, and even for small-scale recycling and refining in jewellery. By the 16th century, hundreds of fire assays were conducted across Europe daily, by different professionals who shared the very same tools and techniques, but pursuing diverse aims. It is in this context that the laboratory appears as a specific workplace for the first time in history. This is the most important root of modern analyical chemistry and, moreover, the observations carried out during these experiments would lead, in the long run, to the rejection of the traditional Aristotelian worldview. Thus, the study of developments in the practice and purpose of fire assay is crucial to understand the history of chemistry and the emergence of the modern understanding of nature (Sisco and Smith, 1949, 1951; Smith and Forbes, 1969; Halleux, 1986;" @default.
- W146387835 created "2016-06-24" @default.
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- W146387835 date "2005-01-01" @default.
- W146387835 modified "2023-09-27" @default.
- W146387835 title "Ceramic materials in fire assay practices: a case study of 16th century laboratory equipment" @default.
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