Allen, J. R L. (2001). Cast Copper Slag Building Blocks on the Severn Estuary Levels, St. Thomas the Apostle, Redwick, Gwent. Archaeology in the Severn Estuary 12. Vol 12, pp. 15-25. https://doi.org/10.5284/1069484. Cite this via datacite

Title
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Title:		 Cast Copper Slag Building Blocks on the Severn Estuary Levels, St. Thomas the Apostle, Redwick, Gwent
Subtitle
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Subtitle:		 St Thomas the Apostle, Redwick, Gwent
Issue
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Issue:		 Archaeology in the Severn Estuary 12
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Series:		 Archaeology in the Severn Estuary
Volume
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Volume:		 12
Page Start/End
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Page Start/End:		 15 - 25
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Allen_2001_Cast_Copper_Slag.pdf (4 MB) : Download
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DOI
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DOI
https://doi.org/10.5284/1069484
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Publication Type:		 Journal
Abstract
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Abstract:		 A substantial part of the churchyard wall of St. Thomas the Apostle, Redwick, is capped by triangular coping blocks of cast slag, a byproduct of the 18th to mid-I 9th century coppersmelting industry located in south-west Britain The slags are silica-rich (unreacted flux), glassy to partly crystalline (Jayalite), and contain spheroidal inclusions (prills) of copper-ironsulphur compounds related to the smelting process (chiefly ?chalcocite, Cu2S). A petrographic, mineralogical and chemical comparison of the blocks with slag blocks and waste slag from three other sites (two archaeological) in the Severn Estuary Levels suggests that this widely used, artificial building material is likely to prove very variable in character. More work is needed before it can be said whether the variability is indicative of provenance, technical advances in the industry, or the production of blocks at more than one stage in the elaborate copper-smelting process. The blocks, a high-mass but low-value product, appear to be have been traded chiefly by water.
Author
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Author:		 John R L Allen
Year of Publication
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Year of Publication:		 2001
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Subjects / Periods:
Churchyard Wall (Auto Detected Subject)
Blocks (Auto Detected Subject)
Slag (Auto Detected Subject)
Slag Blocks (Auto Detected Subject)
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Created Date
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Created Date:		 09 Oct 2017