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山东昌乐蓝宝石的颜色成因与优化
引用本文:郭涛,颜慰萱.山东昌乐蓝宝石的颜色成因与优化[J].矿物学报,1993,13(3):286-292,T003.
作者姓名:郭涛  颜慰萱
作者单位:中国地质大学珠宝学院,中国地质大学,中国地质大学珠宝学院 武汉 430074,武汉 430074,武汉 430074
摘    要:本文对昌乐蓝宝石进行了大量的颜色指数测量。各样品的主波长虽多落在蓝紫—蓝—蓝绿区,但其纯度均很低,以致肉眼观察十分暗淡,近乎黑色。蓝宝石的颜色主要由全铁含量和Fe~(2+)/Fe~(3+)值决定。随Fe~(2+)含量的增多,蓝宝石的颜色由黄逐渐变为蓝紫色。热处理难以改变蓝宝石中全铁的含量,但可使不同价态铁的含量发生改变。昌乐蓝宝石中全铁含量太高,通常热处理效果不很理想。

关 键 词:蓝宝石  颜色  热处理  山东  测量

THE MECHANISM OF COLORATION OF SAPPHIRE FROM CHANGLE,SHANDONG PROVINCE
Guo Tao,Yan Weixuan,Shao Jielian Gemmological Institute of China University of Geoscience,Wuhan, Mineralogy.THE MECHANISM OF COLORATION OF SAPPHIRE FROM CHANGLE,SHANDONG PROVINCE[J].Acta Mineralogica Sinica,1993,13(3):286-292,T003.
Authors:Guo Tao  Yan Weixuan  Shao Jielian Gemmological Institute of China University of Geoscience  Wuhan  Mineralogy
Institution:Guo Tao,Yan Weixuan,Shao Jielian Gemmological Institute of China University of Geoscience,Wuhan,430074 Mineralogy Department of China University of Geoscience,Wuhan,730074
Abstract:Presented in this paper are the chromaticity indices of sapphire fromChangle. Most dominant wavelengths fall within the bluish violet-blue-bluishgreen ranges, but the saturation is very low, so the color is dull and dark. Thecolor of sapphire depends on total iron and Fe~(2+)/Fe~(2+) ratio. With increasingFe~(2+) content, the color will change gradually ftom yellow to bluish-violet. Theratio of Fe~(2+)/Fe~(2+) can be altered by heat treatment. However, the concentrationof isovalent iron remains unchanged. The thermal effect would not be strongin the case of high Fe content.
Keywords:sapphire  mechanism of coloration  heat treatment  Shandong  
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