Roman blue-green bottle glass: chemical–optical analysis and high temperature viscosity modelling

BINGHAM, Paul and JACKSON, C.M. (2008). Roman blue-green bottle glass: chemical–optical analysis and high temperature viscosity modelling. Journal of Archaeological Science, 35 (2), 302-309.

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Abstract

Chemical analysis, optical absorption spectroscopy and mathematical modelling of high temperature viscosity have been carried out on five 1st–2nd century AD Roman blue-green bottle glass fragments from Coppergate, York. Modelled viscosities indicate remarkable consistency within the sample set studied and support the suggestion that temperatures of ∼1000–1150 °C were required to remelt these glasses and to provide suitable viscosities for forming articles. Iron redox ratios (Fe2+/ΣFe), analysed SO3 contents and the absence of characteristic Fe3+–S2− amber absorption bands suggest that melting conditions for all studied glasses were mildly, rather than strongly, reducing (estimated pO2 ≈ 10−1–10−6 bar). These furnace conditions are consistent with the effects of combustion gases and carbonaceous matter contained in the raw materials.

Item Type:	Article
Research Institute, Centre or Group:	Materials and Engineering Research Institute > Structural Materials and Integrity Research Centre > Centre for Corrosion Technology
Identification Number:	10.1016/j.jas.2007.03.011
Depositing User:	Hilary Ridgway
Date Deposited:	29 Aug 2012 14:58
Last Modified:	29 Aug 2012 14:58
URI:	http://shura.shu.ac.uk/id/eprint/5709

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