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出 处:《文物保护与考古科学》1990年第2期22-26,共5页Sciences of Conservation and Archaeology
基 金:国家自然科学基金
摘 要:本文共对12件玻璃样品进行化学组成分析.其中,部分样品还进行了密度测定,X 射线衍射分析和显微镜观察.此外,还对一颗黄色玻璃珠的表面层进行 SEM-EDX 分析.结果表明,该玻璃珠表面有金箔涂层.根据分析结果,青海大通县出土玻璃的基础成分可归为三类,即铅钡玻璃(Na_2O-PbO-BaO-SiO_2系统玻璃),钠钙玻璃和钾硅玻璃(K_2O-SiO_2系统)。此外,还对玻璃的来源进行了探讨.Chemical analyses have been carried out for twelve glass samples,some of them are also examined by densitometry,X-ray diffraction analysis and microscopic examination.In addition,the surface layer of a yellow glass bead has been analysed by means of SEM-EDX.The result shows that glass bead was coated with gold. According to the analytical results,the basic compositions of glasses unearthed from Datong,Qinghai province,can be classfied into three sorts,namely,lead barium glass (Na_2O-PbO-BaO-SiO_2 system),sodalime glass and potash glass(K_2O-SiO_2 system). The origins of these three sorts of glasses are as follows:1)The lead barium glass (samples No.1,2,4,5,6,and No.7)is one kind of ancient glass which is large in quantity,and wide in distribution.As the glass with high leadbarium content was only produced in China in ancient time,therefore,this kind of glass was unquestionably made in China.2)The chemical composition of sodalime glasses (samples No.8,9,10,11)listed in table 2 are similar to the ancient glass of the West, this kind of glass was probably introduced from abroad.3)Only a samall number of potash glass beads(Sample No.3)was found in Datong.As we know,this kind of glass was found mainly in southern China and part was discovered in India.The exact origin of potash glass in the Han dynasty is not clear yet.But the authors consider that it might be made in China.
分 类 号:K87[历史地理—考古学及博物馆学] G264[历史地理—历史学]
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