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Forty-seven window and vessel glasses from the 'Great Temple' at Petra (Jordan), dating to the first/second and fourth centuries ce, were analysed by EPMA for major and minor elements. A subset of 29 samples from Petra and 15 samples from Khirbet et-Tannur were additionally analysed for trace elements, using LA-ICP-MS. Six compositional groups were identified on the basis of the presence of decolouring agents. The majority of the glasses derive ultimately from the Levantine coast, but most of the groups show evidence for highly selective recycling. The observed differences between the two sites could be related to different chronological ranges, functions, relative wealth and trade connections. [ABSTRACT FROM AUTHOR]