选取了罗甸玉中一些典型样品, 在进行FT-IR测试的基础上, 对罗甸玉中透闪石晶体内部结构基团的振动归属进行了探讨。 罗甸玉的IR研究结果证实, 罗甸玉矿物组成主要为透闪石, 这与其他测试结果吻合。 但罗甸玉中透辉石840～860 cm-1频率的吸收带的出现, 这是在其他天然软玉的IR研究中未见报道的, 也是罗甸玉矿物组成与其他软玉矿物组成的最大区别, 为罗甸玉在成玉（即由透闪石岩向软玉转变）过程中残留透辉石所致, 是揭示罗甸玉变质成因过程的重要矿物学证据, 同时也表明罗甸玉的成玉过程与已发现的其他天然软玉相比存在一定差异, 这一差异进一步揭示罗甸玉是一种新成因类型的软玉矿。

In the present paper we selected some typical samples from Luodian jade to perform FTIR test in order to study the vibration attribution of crystals structure. The results confirm that the main mineral composition of Luodian jade is tremolite. Not only has it been not reported in other IR study on natural nephrite that the absorption bands at wave numbers between 840 and 860 cm-1 caused by residual diopside exist in Luodian jade with the process of tremolite rock transformed to nephrite, but is also the biggest difference between the Luodian jade and other nephrite. The results reveal important mineralogy evidence of metamorphism of Luodian jade, and on the other hand, it also shows that there is a certain difference in the process of nephrite change between Luodian jade and other natural nephrite. Moreover, it further suggests that Luodian jade is a kind of new genetic nephrite ore.