昌化鸡血石冻地致色机理初探

A tentative discussion on coloration mechanism of Changhua Chicken-Blood Stone

运用X射线粉晶衍射、扫描电镜、电子探针等分析方法 ,对昌化鸡血石的冻地致色机理进行了初步探讨 ,认为田黄冻的黄色是由于Fe3 + 和Cr3 + 等杂质元素的类质同象混入引起 ,芙蓉冻的淡红色是由于Cr3 + 的类质同象混入引起 ,而薄荷冻的淡绿色和朱砂冻的紫红色则是由于其中分别存在独立矿物伊利石和针铁矿所致。

The coloration machanism of Changhua Chicken-Blood Stone has been discussed in this paper on the basis of X-ray diffraction analysis, SEM and electron microprobe analysis. The color of “Tianhuang Dong” is related to the isomorphism of such impurity elements as Fe^(3+) and Cr^(3+). The light red color of “Furong Dong' is caused by the isomorphism of Cr^(3+). The light green color of “Bohe Dong' and the purple color of “Zhusha Dong' are related respectively to the existence of illite and goethite.