摘要
安绿玉产于吉林省集安地区,为胶状隐晶质蛇纹石矿物集合体,属岫玉一个新品种。安绿玉的化学成分与蛇纹石的理论化学组成接近。x射线、红外吸收光谱、电子显微镜、穆斯堡尔谱和吸收谱研究表明:安绿玉主要由利蛇纹石组成,含有一定量正纤蛇纹石。利蛇纹石为片状、正纤蛇纹石为管状、纤维状集合体。安绿玉具多种颜色,它取决于铁的含量、价态和位置,含Fe^3+呈黄色系列,而Fe^(2+)→Fe^(3+)电荷转移吸收呈蓝色系列。利蛇纹石的Fe^(2+)、Fe^(3+)在八面体M_1和M_2位置上分布是无序的。文中还论述了玉石特征及其与成分和结构的关系。
Anlu jade occurs in Jian, Jilin Province, as a new species of Yu Yen stone, It's aggregate of serpentine in colloid-cryptocrystalline. Chemical composition of Anlu jade approaches to theoretical components of serpentine. XRD, IR, TEM, NGR and AS study shows: it is mainly comprise of lizardite, with certain amount of orthochrysotile. Lizar-dite appears in many kind of sheets, orthochrysotile is in tubular and fibrous aggregate. There are different colours with Anlu jade and the colour is controlled by its content, valence state and position of Fe in jade. Fe3+ shows a series of yellow, Fe2+→Fe3+ electron transport shows blue.Fe2+ and Fe3+ are inorderly distributed in the sites of M1 and M2 of lizardite octahedral. The relationship between composition feature and structure is also discussed in the paper.
关键词
安绿玉
矿物学
蛇纹石
Anlu jade, lizardite, mineralogy, Jilin Ji'an
