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A new interpretative approach to the chemistry of copper-alloy objects: source, recycling and technology

  • P.J. Bray (a1) and A.M. Pollard (a1)


The metal composition of bronze alloys has been routinely examined as a means of inferring the source of the ore. But bronze is recycled, and the quantity of some components, such as arsenic, is depleted every time the alloy is melted down. Since the Early Bronze Age of the British Isles was largely supplied from a single mine on Ross Island, Co. Kerry, tracking arsenic content shows the number of re-melts and this gives the object a biography and a social context. Applying this ingenious new procedure to their large database, the authors also winkle out other sources of supply and new insights about the technology involved.



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Ambert, P. 1991. L’émergence de la métallurgie chalcolithique dans midi de la France. Archéologie en Languedoc 10/11: 5158.
Ambert, P. & Barge-Mahieu, H.. 1991. Les mines préhistoriques de Cabriéres (Herault), in Mohen, J.-P. & Éluére, C. (ed.) Découverte du métal: 259–77. Paris: Picard.
Anderson, C.T. 1930. The heat capacities of arsenic, arsenic trioxide, and arsenic pentoxide at low temperatures. Journal of the American Chemical Society 52: 2296–300.
Beeley, P. 2001. Foundry technology. Oxford: Butterworth-Heinemann.
Bray, P.J. 2009. Exploring the social basis of technology: re-analysing regional archaeometric studies of the first copper and tin-bronze use in Britain and Ireland. Unpublished PhD dissertation, University of Oxford.
Bray, P.J. In press. Before 29Cu became copper: tracing the recognition and invention of metalleity in Britain and Ireland during the third millennium BC, in Allen, M. (ed.) Is there a British Chalcolithic? People, place and polity in the later 3rd millennium (Prehistoric Society research paper 4). Oakville (CT): The Prehistoric Society.
Britton, D. 1963. Traditions of metalworking in the later Neolithic and Early Bronze Age of Britain: Part 1. Proceedings of the Prehistoric Society 29: 258325.
Budd, P. & Taylor, T.. 1995. The fairie smith meets the bronze industry: magic versus science in the interpretation of prehistoric metal-making. World Archaeology 27: 133–43.
Budd, P., Haggerty, R., Ixer, R.A., Scaife, B. & Thomas, R.G.. 2000. Copper deposits in south-west England identified as a source of Copper Age metalwork. Available at: (accessed 17 April 2012).
Burgess, C. 1980. The age of Stonehenge. London: Phoenix Press
Case, H.J. 1954. Studies of Irish and British early copper artefacts: second series. Man 54: 1827.
Charles, J.A. 1980. Recycling effects on the composition of non-ferrous metals. Philosophical Transactions of the Royal Society of London Series A 295: 5768.
Coghlan, H.H. 1970. British and Irish Bronze Age implements in the Borough of Newbury Museum. Newbury: Newbury Museum.
Coghlan, H.H. 1979. Analyses of Bronze Age artefacts from Irish museums. Historical Metallurgy 13: 98105.
Coghlan, H.H. & Case, H.J.. 1957. Early metallurgy of copper in Ireland and Britain. Proceedings of the Prehistoric Society 23: 91123.
Coghlan, H.H. & Cook, M.. 1953. Studies of British and Irish Celts: first series. Man 53: 97101.
Copper Development Association. 2011. Annual data 2011. Copper: brass: bronze. Copper supply and consumption 1990-2010. Available at: data/pdfs/annual data.pdf (accessed 17 April 2012).
Earl, B. & Adriaens, A.. 2000. Initial experiments on arsenical bronze production. Journal of the Minerals, Metals and Materials Society 52: 1416
Friedman, A.M., Conway, M., Kastner, M., Milsted, J., Metta, D., Fields, P.R. & Olsen, E.. 1966. Copper artifacts: correlation with some types of copper ores. Science 152: 1504–506.
Gowland, W. 1906. Presidential address: copper and its alloys in prehistoric times. Journal of the Anthropological Institute of Great Britain and Ireland 36: 1138.
Hampton, D.F.G., Bennett, P., Brown, D., Lancaster, R., Rice, J.L., Sharp, A.L., Stephens, H.A. & Bidwell, H.T.. 1965. Metal losses in copper-base alloys. The British Foundryman 58: 225–40.
Hodges, H.W.M. 1959. The Bronze Age moulds of the British Isles, Part 1: Scotland and northern England—moulds of stone and clay. Sibrium 4: 129–37.
Hodges, H.W.M. 1960. The Bronze Age moulds of the British Isles, Part 2: England and Wales—moulds of stone and bronze. Sibrium 5: 153–62.
Ixer, R.A. 1999. The role of ore geology and ores in the archaeological provenancing of metals, in Young, S.M.M., Pollard, A.M., Budd, P. & Ixer, R.A. (ed.) Metals in antiquity (British Archaeological Reports international series 792): 4352. Oxford: Archaeopress.
Ixer, R.A. & Budd, P.. 1998. The mineralogy of Bronze Age copper ores from the British Isles: implications for the composition of early metalwork. Oxford Journal of Archaeology 17: 1541.
Ixer, R.A. & Pattrick, R.A.D.. 2003. Copper-arsenic ores and Bronze Age mining and metallurgy with special reference to the British Isles, in Craddock, P.T. & Lang, J. (ed.) Mining and metal production through the ages: 920. London: British Museum Press.
Junghans, S., Sangmeister, E. & Schröder, M.. 1960. Metallanalysen kupferzeitlicher und fürhbronzezeitlicher Bodenfunde aus Europa (Studien zu den Anfängen der Metallurgie 1). Berlin: Gebr. Mann.
Junghans, S., Sangmeister, E. & Schröder, M. 1968. Kupfer und Bronze in der frühen Metallzeit (Studien zu den Anfängen der Metallurgie 2). Berlin: Gebr. Mann.
Junghans, S., Sangmeister, E. & Schröder, M. 1974. Kupfer und Bronze in der frühen Metallzeit Europas (Studien zu den Anfängen der Metallurgie 4). Berlin: Gebr. Mann.
Killick, D. 2001. Science, speculation and the origins of extractive metallurgy, in Brothwell, D.R. & Pollard, A.M. (ed.) Handbook of archaeological sciences: 483–92. Chichester: Wiley.
Krause, R. 2003. Studien zur kupfer- und frühbronzezeitlichen Metallurgie zwischen Karpatenbecken und Ostsee (Vorgeschichtliche Forschungen 24). Rahden: Leidorf.
Krause, R. & Pernicka, E.. 1996. Das neue Stuttgarter Metallanalysenprojekt ‘SMAP’. Archäologisches Nachrichtenblatt 1: 274–91.
Lee, Y.Y., Tseng, H.W., Hsiao, Y.H. & Liu, C.Y.. 2009. Surface oxidation of molten Sn (Ag, Ni, In, Cu) alloys. Journal of the Minerals, Metals and Materials Society 61: 5258.
Merkel, J.F. 1982. Reconstruction of Bronze Age copper smelting, experiments based on archaeological evidence from Timna, Israel. Unpublished PhD dissertation, Institute of Archaeology, University of London.
Mckerrell, H. & Tylecote, R.F.. 1972. Working of copper-arsenic alloys in the Early Bronze Age and the effect on the determination of provenance. Proceedings of the Prehistoric Society 38: 209–18.
Müller, R. & Pernicka, E.. 2009. Chemical analyses in archaeometallurgy: a view on the Iberian peninsula, in Kienlin, T.L. & Roberts, B. (ed.) Metals and societies. Studies in honour of Barbara S. Ottaway: 296306. Bonn: Rudolf Habelt.
Needham, S.P. 1983. The Early Bronze Age axeheads of central and southern England. Unpublished PhD dissertation, University College, Cardiff.
Needham, S.P. 1996. Chronology and periodisation in the British Bronze Age, in Randsborg, K. (ed.) Absolute chronology: archaeological Europe 2500-500 BC (Acta archaeologica 67): 121–40.
Needham, S.P. 1998. Modelling the flow of metal in the Bronze Age, in Mordant, C., Pernot, M. & Rychner, V. (ed.) L’atelier du bronzier en Europe du XXe au VIIIe siécle avant notre ére, III: production, circulation et consommation du bronze: 285307. Paris: CTHS.
Needham, S.P. 2002. Analytical implications for Beaker metallurgy in northwest Europe, in Bartelheim, M., Pernicka, E. & Krause, R. (ed.) Die Anfänge der Metallurgie in der alten Welt: 99133. Rahden: Marie Leidorf.
Needham, S.P., Bronk Ramsey, C., Coombs, D., Cartwright, C. & Pettitt, P.. 1997. An independent chronology for British Bronze Age metalwork: the results of the Oxford radiocarbon accelerator programme. Archaeological Journal 154: 55107.
Needham, S., Parker Pearson, M., Tyler, A., Richards, M. & Jay, M.. 2010. A first ‘Wessex 1’ date from Wessex. Antiquity 84: 363–73.
Niedershchlag, E., Pernicka, E., Seifert, T. & Bartelheim, M.. 2003. The determination of lead isotope ratios by multiple collector ICP-MS: a case study of Early Bronze Age artefacts and their possible relation with ore deposits of the Erzgebirge. Archaeometry 45: 61100.
Northover, P. 1980. The analysis of Welsh Bronze Age metalwork, in Savory, H. (ed.) Guide catalogue of the Bronze Age collections: 229–43. Cardiff: National Museum of Wales.
Northover, P. 1999. The earliest metalworking in southern Britain, in Hauptmann, A., Pernicka, E., Rehren, T. & Yalcin, U. (ed.) The beginnings of metallurgy (Anschnitt Beiheft 9): 211–26. Bochum: Deutsches Bergbau-Museum.
O’brien, W. 2004. Ross Island. Mining, metal and society in early Ireland. Galway: National University of Ireland.
Ottaway, B.S. 2002. Towards interpretive archaeometallurgy, in Bartelheim, M., Pernicka, E. & Krause, R. (ed.) Die Anfänge der Metallurgie in der alten Welt: 713. Rahden: Marie Leidorf.
Pernicka, E. 1999. Trace element fingerprinting of ancient copper: a guide to technology or provenance, in Young, S.M.M., Pollard, A.M., Budd, P. & Ixer, R.A. (ed.) Metals in antiquity (British Archaeological Reports international series 792): 163–71. Oxford: Archaeopress.
Pickles, C.A. 1998. Selective oxidation of copper from liquid copper-silver alloys. Metallurgical and Materials Transactions B 29: 3951.
Rohl, B. & Needham, S.P.. 1998. The circulation of metal in the British Bronze Age: the application of lead isotope analysis. London: British Museum.
Rutland, R.A. & Coghlan, H.H.. 1972. Bronze Age flat axes from Berkshire. Berkshire Archaeological Journal 66: 4559.
Schmidt, P.K. & Burgess, C.B.. 1981. The axes of Scotland and northern England. Munich: C. H. Beck'sche Verlagsbuchhandlung.
Tanahashi, M, Fujinaga, T., Zhijian, S., Takeda, K., Hong Yong, S. & Yamauchi, C.. 2005. Effects of coexisting oxygen and antimony in molten copper on rate of arsenic elimination from the copper phase by the use of Na2CO3 slag. Materials Transactions 46: 2180–89.
Timberlake, S. 2002. Ancient prospection for metals and modern prospection for ancient mines—the evidence for Bronze Age mining within the Biritish Isles, in Bartleheim, M., Pernicka, E. & Krause, R. (ed.) Die Anfänge der Metallurgie in der alten Welt: 328–57. Rahden: Marie Leidorf.
Timberlake, S. 2003. Excavations on Copa Hill, Cwmystwyth (1986-1999); an Early Bronze Age copper mine within the uplands of central Wales (British Archaeological Reports British series 348). Oxford: Archaeopress.


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A new interpretative approach to the chemistry of copper-alloy objects: source, recycling and technology

  • P.J. Bray (a1) and A.M. Pollard (a1)


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