First evidence for alloying practices in the Chalcolithic Southern Levant (4500–3800 BCE) as revealed by metallography

Autor:	Thomas Rose, Stefano Natali, Andrea Brotzu, Shay Bar, Yuval Goren
Jazyk:	angličtina
Rok vydání:	2023
Předmět:	Polymetallic copper alloys Lost wax casting Unalloyed copper inclusions SEM–EDS Metallography Fazael Fine Arts Analytical chemistry QD71-142
Zdroj:	Heritage Science, Vol 11, Iss 1, Pp 1-15 (2023)
Druh dokumentu:	article
ISSN:	2050-7445
DOI:	10.1186/s40494-023-01030-2
Popis:	Abstract Excavations at the Chalcolithic site Fazael in the central Jordan Valley uncovered a large number of metal items, many of them polymetallic copper alloys cast in the lost wax technique. Metallography and SEM–EDS analysis on a subset of the assemblage confirm previous notions of the lost wax metallurgy in the Chalcolithic Southern Levant but extend them significantly in three aspects: The Fazael metal assemblage is slightly depleted in its arsenic content compared to metal assemblages from other sites, silt-sized quartz inclusions in unalloyed and polymetallic copper items, and the presence of unalloyed copper inclusions. These latter provide the earliest direct evidence for mixing of different metal types in West Asia, potentially alloying or recycling.
Databáze:	Directory of Open Access Journals
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