Study on Clarity of Shoushan Stone
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摘要: 寿山石是我国著名的图章石之一,其价值评价中的重要指标之一是透明度。不同品种、不同产矿区域的寿山石其透明度差别较大。即使是同一块寿山石,其不同部分的透明度也有不同,这是鉴别寿山石品种及其商业定价的重要依据之一。结合X射线粉末衍射、红外吸收光谱以及扫描电镜技术的研究结果发现,透明度高的寿山石样品其组成矿物的有序度高,结晶完好,呈假六方片状产出;而透明度低的则有序度低,自形程度差,晶体颗粒小。对善伯石中的“花生糕”、大山石中的透明条带、白丝以及花坑石中的透明条带等透明度与基体明显不同的部分进行了研究,其结果显示,该部分的主要矿物成分与基体的相同,但其有序度、微量元素的质量分数以及结晶形貌与基体的有所差异。Abstract: The Shoushan stone is one of the famous craft carving stones in China and the clarity is one of the decisive factors in the value appraise.The clarity of Shoushan stone of the different varieties and from the differfent areas is not the same,which is one of the important basis for identifying the varieties and value of Shoushan stone.By using XRD,IR and SEM,the results indicate that the samples with high transparency are of high degree of order,well-crystallized minerals and as pseudo-hexagonal slaty crystals.On the contrary,opaque samples are with low degree of order and with much thinner and smaller crystal particles.Each variety of Shoushan stone samples has its distinguished texture feature,just as the "peanut pastry" of Shanbo stone,transparent band or "silk" part of Dashan stone and transparent band of Huakeng stone,which have the same mineral constituent with that of the substrate,but the different degree of order,the content of trace elements and crystal morphology.
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Keywords:
- Shoushan stone /
- clarity /
- degree of order /
- scanning electron microscope
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