Author： Brems Dieter Degryse Patrick Ganio Monica Boyen Sara
Publisher： Society of Glass Technology
ISSN： 0017-1050
Source： Glass Technology - European Journal of Glass Science and Technology Part A, Vol.53, Iss.4, 2012-08, pp. : 129-138
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Abstract
Pliny the Elder's 'Natural History' is often cited in studies of ancient natron glass production. Pliny describes the production of glass using sand from the Belus River in Israel and the Volturno River in Italy. He also mentions that glass was similarly made in France and Spain. However, no direct archaeological evidence has ever been found to support glass production in these regions. In this study we investigate the possible existence of a Roman primary glass industry in the western Mediterranean, based on the occurrence of suitable sand raw materials. 178 beach sands from Spain, France and Italy are evaluated for their suitability for glass production by calculating the composition of hypothetical glasses made from these sands and comparing them to Roman natron glass. The results show that good glassmaking sands are far from common. Only six limited areas could be defined where suitable sand raw materials would have been available to the Roman glassmaker. The rest of the sands are unsuitable for glass production in their present form. The suitability of the suggested sands was checked by performing a series of melting experiments, which provide further insights in the way Roman glass makers would have had to prepare their raw materials and the used batch recipes.
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