Technological Analyses of the Violet Pigments in the Site of Eastern Gate Tower of Han Yang Mausoleum
SUN Feng1，3, SUN Man-li1, ZHAO Xi-chen2
1. School of Cultural Heritage (Northwest University), Key Laboratory of Cultural Heritage Research and Conservation (Northwest University), Xi’an 710069, China
2. Shaanxi Provincial Institute Archaeology, Xi’an 710043, China
3. Shaanxi Provincial Institute of Cultural Relics Protection, Xi’an 710075, China
Abstract：In consideration of the advantage of micro X-ray diffraction (micro-XRD) technology, such as micro area, trace, in situ, undamaged and so on, the author attempts to use this technology combined with the super depth of field microscopy, scanning electron microscopy, energy spectrum analysis (SEM-EDX) and micro laser raman spectroscopy(MLRM) for the first time in this paper, to observe microscopic, nondestructive analyse and identify the violet pigment sample unearthed in the site of eastern gate tower of Han Yang mausoleum. The results confirm that the composition of this violet pigment is Chinese Purple (BaCuSi2O6), accompanied by lanarkite (Pb2[SO4]O) and barite (BaSO4). Chinese Purple like type of copper barium silicate pigment was found in the ruins of western han dynasty mausoleum, which reflects that the purple colour has a high social status level at that time. And it appeared in the eastern gate tower shows that the design and decoration of western han dynasty emperor’s mausoleum in terms of the influence of theory of Five Elements. Furthermore, the discovery of lanarkite and barite makes the author to speculate that barite is Barium raw material, and lanarkite plays the part of fluxing agent and catalyst as lead additives in the process of synthesis Chinese Purple. And then it further reflects that the synthetic technology is mature enough from the perspective of the history of chemistry at that time.
Key words：Han Yang mausoleum; The site of eastern gate tower; The violet pigments; Chinese purple; Micro-XRD
孙 凤，孙满利，赵西晨. 汉阳陵东阙门出土蓝紫色颜料的科学分析[J]. 光谱学与光谱分析, 2018, 38(05): 1588-1591.
SUN Feng, SUN Man-li, ZHAO Xi-chen. Technological Analyses of the Violet Pigments in the Site of Eastern Gate Tower of Han Yang Mausoleum. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2018, 38(05): 1588-1591.
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