期刊
JOURNAL OF ARCHAEOLOGICAL SCIENCE
卷 39, 期 5, 页码 1238-1248出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jas.2012.01.006
关键词
Millefiori glass; facon-de-Venise glass; Venetian glass; Provenance analysis; Electron probe microanalysis; Raman microscopy; UV-Visible absorption spectroscopy
资金
- Nucleo Museologico do Mosteiro de Sta. Clara-a-Velha
- Fundacao para a Ciencia e a Tecnologia
A set of ten Millefiori glass fragments dating from the 17th century, originated from archaeological excavations carried out at the Monastery of Sta. Clara-a-Velha (Coimbra, Portugal), were characterized by X-ray electron probe microanalysis (EPMA), Raman microscopy and UV-Visible absorption spectroscopy. All glasses are of soda-lime-silica type. The use of coastal plant ash is suggested by the relatively high content of MgO, K2O and P2O5, as well as by the presence of chlorine. Tin oxide or calcium antimonate were the pacifiers used in the opaque glasses, cobalt in the blue glasses, copper in the turquoise glasses, iron in the yellow and greenish glasses, and iron and copper were found in the opaque red and aventurine glasses. Based on the concentrations of alumina and silica four different sources of silica were identified, allowing the classification of the glasses into the following compositional groups: low alumina (<2 wt%), which includes a sub-group of cristallo samples with SiO2 > 70 wt%, medium alumina (2-3 wt %), high alumina (3-6 wt%) and very high alumina (>6 wt%). Comparison with genuine Venetian and facon-de-Venise compositions showed that two fragments are of Venetian production, one of Venetian or Spanish production and the remaining are of unknown provenance. In two fragments the glass of the decoration is probably Venetian or Spanish but the glass used in the body is also of unknown provenance. (C) 2012 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据