缅甸还原性次生化翡翠的傅立叶变换红外光谱分析  

Fourier Transform Infrared Spectrum analyses on reducing hypergenic jadeite of Burma

作　　者：胡楚雁[1] 狄敬茹[2] 张丛森 

机构地区：[1]深圳职业技术学院设计与艺术学部,广东深圳518055 [2]中国地质大学,湖北武汉430074 [3]南京矿产地质研究所,江苏南京210016

出　　处：《深圳职业技术学院学报》2003年第3期30-33,共4页Journal of Shenzhen Polytechnic

摘　　要：傅立叶变换红外光谱分析表明,原生翡翠与还原性次生化翡翠在3800-3000 cm-1范围内,具有不同的红外吸收图谱标型特征,原生翡翠出现右倾斜的“V”字形吸收曲线,峰谷尖锐,吸收率低;还原性次生化翡翠出现“U”字形吸收曲线,峰谷宽阔,吸收率较高。其原因可能与还原性次生化翡翠的微裂隙中穿插充填有绿泥石等含水的粘土类矿物,使其红外光谱在3800-3400 cm-1区段叠加有粘土矿物中水和羟基的吸收峰有关。Fourier Transform Infrared Spectrum (FTIR) Analysis shows the natural and reducing hypergenic jadeite have different characteristics of infrared spectrum in the range from 3800cm-1 to 3000cm-1 between the natural jadeite has right-inclining Vshape infrared spectra curve, lower absorptivity; but reducing hypergenic jadeite shows Ushape infrared spectra curve, higher absorptivity. The difference maybe due to the clay minerals which filling in the micro-fracture of reducing hypergenic jadeite, Lend to the infrared spectrum of filling clays adding to that of jadeite and change the infrared spectra curve from Vshape to Ushape.

关 键 词：红外光谱 还原性次生化 翡翠 缅甸 

分 类 号：P575.4[天文地球—矿物学]