中文摘要：

纳米碳管因其特殊的结构和性能引起了人们极大的关注,它是当今材料学学界研究的热点之一.为了探讨自然界中纳米碳管的特征及其形成机制,对新疆苏吉泉石墨化花岗岩所含团块状石墨进行了扫描探针显微镜和Raman光谱分析,分析表明,其中存在三角形碳矿物,三边均为碳管,边长为1.5-2.0μm,宽度为0.15-0.5μm,长宽比为4∶1-10∶1,且呈60°夹角;一级拉曼光谱出现1355 cm^-1、1357 cm^-1和1578 cm^-1、1580 cm^-1特征峰,说明该矿物的石墨化程度很高;二级拉曼光谱2721 cm^-1为单峰,没有分裂峰和肩峰,说明了天然纳米碳管的低维晶格.

英文摘要：

Carbon nanotube is a hot research area in the current material field because of its special properties and unique structural features. In order to probe the formation mechanism of carbon nanotubes in nature, the carbon mineral occurred in Sujiquan graphite ore deposit, Xinjiang province, has been analyzed by scanning probe microscopy and micro Laser Raman spectroscopy. The results show that there exits a kind of special triangle carbon mineral whose triad is composed of carbon tube. The length ranges 1.5 - 2.0 μm, width 0.15 - 0.5 μm and the ratio of length to width from 4：1 to 10： 1, each angle is 60°. The special peaks of triangle carbon mineral locate at 1 355 cm^-1, 1 357 cm^-1 and 1 580 cm^-1 , which indicates that the graphitization degree is higher. The second Raman 2 721 cm^-1 is a single peak means the lower dimension of the natural carbon nanotube.