缅甸是商业性翡翠主要产地，危地马拉、俄罗斯也有翡翠产出。选取市场上常见不同产地翡翠样品，激光拉曼光谱测试显示，缅甸翡翠矿物成分为硬玉、绿辉石、透闪石。危地马拉矿物成分为硬玉、绿辉石、绿泥石、榍石。俄罗斯翡翠矿物成分为硬玉、钠长石、绿辉石。危地马拉翡翠矿物成分相对复杂。对比不同产地硬玉矿物拉曼特征发现，缅甸翡翠硬玉矿物分别在 1037 cm^-1、988cm^-1、697cm^-1 和 372 cm^-1、201cm^-1等处显示硬玉的典型光谱特征。危地马拉翡翠硬玉拉曼峰值多叠加680 cm^-1, 218cm^-1附近，为绿辉石特征特征峰值，还含有603 cm^-1、537 cm^-1、306 cm^-1附近绿泥石特征拉曼光谱峰值，表明危地马拉翡翠硬玉矿物多被Fe､Mg､Ca元素的类质同像替换，形成硬玉-绿辉石固溶体矿物，且硬玉矿物表面发生绿泥石蚀变。俄罗斯翡翠硬玉拉曼峰值，多含有1100 cm^-1, 507cm^-1, 473cm^-1,164cm^-1附近钠长石特征拉曼峰值，与岩相学研究一致，俄罗斯翡翠硬玉颗粒普遍被钠长石交代。
  Myanmar is the main commercial jadeite origins, Guatemala, Russia also have jadeite output. The samples of jadeite from different origins in the market were selected, and the laser Raman spectrum test showed that the mineral composition of Jadeite from Myanmar was jadeite, omphacite and tremolite.The mineral constituents of Guatemala are jadeite, omphacite, chlorite, sphene. The mineral composition of Russian jadeite is jadeite, albite and omphacite.The mineral composition of Guatemalan jadeite is relatively complex. By comparing the Raman characteristics of jadeite minerals from different origins, it is found that the typical spectral characteristics of jadeite minerals from Myanmar are 1037 cm^-1, 988cm^-1, 697cm^-1, 372 cm^-1, 201cm^-1, respectively. The Raman peak values of Guatemalan jadeite mostly superposed the characteristic peaks of omphacite near 680 cm^-1 and 218cm^-1, and also contained the characteristic Raman peak values of chlorite near 603 cm^-1, 537 cm^-1 and 306 cm^-1, indicating that the Guatemalan jadeite minerals were mostly replaced by the similar images of Fe, Mg and Ca elements.Jadeite - chlorite solid solution minerals are formed, and chlorite alteration occurs on the surface of jadeite minerals. The Russian jadeite Raman peak contains the characteristic Raman peak of albitite near 1100 cm^-1, 507cm^-1, 473cm^-1,164cm^-1, which is consistent with petrographic studies. The Russian jadeite particles are generally metasomated by albitite.

 

激光拉曼光谱,翡翠,光谱特征