台湾软玉的矿物成分、显微结构特征及形成世代  

Mineral Composition,Microstructure Characteristics and Generation of Taiwan Nephrite

作　　者：任戍明[1] 张良钜[1] 张杰[1] 

机构地区：[1]桂林理工大学地球科学学院,广西桂林541004

出　　处：《桂林理工大学学报》2012年第1期36-42,共7页Journal of Guilin University of Technology

基　　金：国家自然科学基金项目(40572026);广西研究生教育创新计划项目(2010105960709M28)

摘　　要：对采自台湾花莲县丰田矿区的软玉样品利用傅里叶变换红外光谱(FTIR)和X射线粉晶衍射(XRD)进行矿物成分分析,红外吸收频率主要出现在940～1 105 cm-1、650～760 cm-1、460～510 cm-1和3 670 cm-1处,X射线粉晶衍射主要特征谱线为0.844 3～0.845 8 nm(110)、0.271 1～0.271 5 nm(151)、0.313 1～0.313 5 nm(310)和0.328 3～0.328 6 nm(240),结果表明其主要矿物为透闪石。软玉具有毛毡状变晶结构、柱状变晶结构、梱状变晶结构和平行纤维变晶结构。透闪石的形成可分为4个世代:第1世代为粗粒柱状;第2世代为细粒柱状,并切穿第1世代透闪石;第3世代为毛毡状集合体;第4世代为平行纤维状,为后期贯入形成。The nephrite samples from Hualien Fengtien nephrite belt of Taiwan are studied by Fourier transform infrared absorption spectra and XRD, indicating that the nephrite samples are mainly composed The major absorption frequencies of the samples appear around 940 -1 105 cm-1, 650 -760 cm cm-1 and 3 670 em-1 , and the main X-ray spectrogram are 0. 844 3 -0. 845 8 nm（ll0） , 0. 271 of tremolite. 1,460 -510 1 -0.271 5 nm（151） , 0. 313 1 -0. 313 5 nm（310） and0. 328 3 -0. 328 6 nm （240）. The microstructures of nephrite are felt-like blastic texture, columnar blastic texture, bundle-like blastic texture and parallel fibroblastic texture. The tremolite went through four different generations. The first is coarse columnar. The second is fine colum- nar, interspersed among the first generation. The third is felt-like aggregate. The fourth is parallel fiber- shaped, formed in last stage.

关 键 词：软玉 透闪石 显微结构 世代 台湾地区 

分 类 号：P619.281[天文地球—矿床学] P578.955[天文地球—地质学]