| 欧泊的变彩效应及成因模式探讨 |
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| 作者姓名： | 邵臻宇 朱静昌 |
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| 作者单位： | 同济大学宝石学教育中心，同济大学宝石学教育中心 上海 200092，上海 200092 |
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| 摘 要： | 通过对欧泊样品 的常规物化特性分析、物质成分测试以及显微结构观察，验证了“欧泊中大小相似的ＳｉＯ２球粒紧密排列形成光栅，使光发生衍射而产生变彩”这一成因机理，研究了ＳｉＯ２球粒的结晶度、球粒大小以及排列方式与变彩的关系，及色斑的成因，进一步探讨了古风化壳中欧泊的成因模式以及该模式与欧泊显 内在关联。并进而提出在鉴定欧泊过程中需要注意的若干问题，纠正了欧泊（尤其是高档品）保养方法上一些传统看法和谬误
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| 关 键 词： | 变彩效应 蒸发速率 欧泊 成因模式 蛋白石 |
Preliminarily Studies on Opal's Effect of Play of Color and Its Mechanism of Formation |
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| Authors: | Shao Zhenyu Zhu Jingchang |
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| Institution: | Gemology Education Center of Tongji University .Shanghai 200092 |
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| Abstract: | By analyzing the conventional physical and chemical characteristics, testing the ingredients and observing the micro-structure of the opal samples,we verify the mechanism of formation that the size-lick SiO2 balls and collocate closely which emerge a grating which the ray can go through. We research the relations between the crystal degree,the size,the arranging method of the balls the special optical effect. We also discuss the formation mode of deposit opal,which is related to the microstruc-ture of opal. Moreover,by using these theories and foundations,we put forward some issues and correct some mistakes when opal is maintained traditionally. |
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| Keywords: | effect of play of color SiO2 balls diffraction evaporate rate |
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