山东昌乐锆石的谱学特征及变生程度  

Spectroscopic Characteristics and Metamict Degree of Zircon from Changle of Shandong

作　　者：白峰[1] 刘晋华[1] 

机构地区：[1]中国地质大学珠宝学院,北京100083

出　　处：《桂林理工大学学报》2012年第2期169-172,共4页Journal of Guilin University of Technology

摘　　要：利用激光拉曼光谱、红外吸收光谱并结合宝石学特征对山东昌乐某蓝宝石砂矿中的锆石谱学特征和变生程度进行了研究。拉曼图谱显示,锆石的变生系数H/W值(1 007 cm-1)大都大于600(在625～5 412,仅1个为441),主要为全晶质锆石和弱变生锆石,变生程度很小。红外光谱的结果表明,锆石的结晶程度高度一致,H/M值(610 cm-1):原样为20～23,氧化条件热处理(600℃)后为20～22,还原条件热处理(600℃)后为28～30,判断为晶质锆石;样品的物理性质与晶质锆石比较接近。因此,所测样品为变生程度很弱的高型锆石,还原条件下热处理后锆石的变生系数有明显增大,其结晶度有所改善。The spectroscopic characteristics and metamict degree of zircons from Changle in Shandong are discussed by using LA - Raman spectra, IR absorption spectra and gemmological characteristics. LA - Raman spectra show that the zircons are crystalloid zircons and weak-metamict zircons, because H/W ratios （ 1 007 cm-1） are higher than 600 （625 -5 412 ） with one exception（441 ）. IR absorption spectra show that crystallinity of zircons are similar, because all the H/M ratios（610 cm-1 ） are 20 -23, 20 -22 after heat treatment in oxidizing condition（600℃ ） and 28 -30 in reducing condition（600℃ ）. It can be concluded that the zircons are crystalloid zircons; the gemmological characteristics are also similar to the crystalloid zircon. All the experiments above hold that the samples are typically the high-type zircon and metamict coefficient of zircons becomes bigger notably and crystallinity is improved after heat-treatment in reducing atmosphere.

关 键 词：锆石 变生程度 激光拉曼光谱 红外吸收光谱 

分 类 号：TS93[轻工技术与工程] P619.28[天文地球—矿床学]