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湖南沅江流域是我国金刚石的重要产地 ,产出的金刚石有多成因、多来源之说。对 1 2 0多粒金刚石的红外光谱和 1 0粒金刚石的显微红外测试结果表明 ,湖南金刚石以 a A和 a AB型为主 ,典型的 a B型较少 ,但 b和 IIa型的比例偏高 ;金刚石含 N量低于 1 0 0× 1 0 -6的占 70 % ;自样品中心到边缘 ,N的聚集类型变化方向明显 ,由 C中心→ A中心 ,A中心→ B中心 ,N与 H的含量变化无一定的规律性 ,反映出湖南金刚石的生长环境变化多样
Yuanjiang River in Hunan Province is an important source of diamond production in China, diamonds have many causes, more sources say. The infrared spectrum of 120 diamonds and the microscopic IR results of 10 diamonds show that the diamonds in Hunan are mainly a A and a AB, and the typical a B are less, but the ratio of b and IIa And the content of N is less than 100%. The concentration of N in the diamond is 70% lower than that of 100x10-6. From the center of the sample to the edge, the aggregation type of N changes obviously. The center of C → A, A → B, N There is no certain regularity with the change of H content, which shows that the growth environment of Hunan diamond is varied