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A glass workshop in ‘Aqir, Israel and a new type of compositional contamination

Chen, C; Freestone, IC; Gorin-Rosen, Y; Quinn, PS; (2021) A glass workshop in ‘Aqir, Israel and a new type of compositional contamination. Journal of Archaeological Science: Reports , 35 , Article 102786. 10.1016/j.jasrep.2020.102786. Green open access

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Abstract

Materials associated with a secondary workshop of early Byzantine date (4th-5th centuries) were unearthed in excavations by the Israel Antiquities Authority in ‘Aqir, central Israel. Fragments of furnace structure, production debris and glass vessels have been analysed by scanning electron microscopy with energy dispersive X-ray analysis (SEM-EDS) and thin-section petrography. The results suggest that the workshop melted raw glass chunks of similar composition to the primary glass made at Apollonia, Israel, to produce secondary glass products. Some glass vessels associated with the furnace are of different composition, and some of these may represent material brought in as cullet for recycling. The furnace was built with ceramic bricks comprising alluvial-type clay with inclusions of quartz sand, probably added as temper. It was fired by potash-rich fuel to approximately 1100°C. Lime mortar was used either to cement the gaps between mudbricks or to line the furnace as a parting layer, and it has introduced a previously unrecognised type of contamination in glass of the period, mainly of Fe2O3 and CaO. The contamination may be identified in glass vessel assemblages elsewhere but is not ubiquitous. As its origin relates to the furnace structure, its occurrence may depend upon chronology or geography and further work is needed to resolve this issue.

Type: Article
Title: A glass workshop in ‘Aqir, Israel and a new type of compositional contamination
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.jasrep.2020.102786
Publisher version: https://doi.org/10.1016/j.jasrep.2020.102786
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: The Levant; Byzantine; Glass-working; Glass furnace; Technology; SEM-EDS; Thin-section petrography; Provenance
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL SLASH
UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of S&HS
UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of S&HS > Institute of Archaeology
UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of S&HS > Institute of Archaeology > Institute of Archaeology Gordon Square
URI: https://discovery.ucl.ac.uk/id/eprint/10120645
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