【摘要】 利用宝石学常规鉴定仪器和红外光谱、差热分析、粉晶衍射、原子吸收和原子荧光光度计等测试技术研究了产自海南三亚的黑珊瑚。黑珊瑚颜色为深褐色、灰黑色至黑色,粉末或薄边缘呈褐色,半透明至不透明,油脂光泽,折射率1.56;表面呈斑点或丘疹状,横断面呈同心层状结构;硬度2.5~3,密度1.34~1.37g/cm3,韧性好,热针测试有烧焦毛发的气味;成分主要由有机质组成,氨基酸总量为64.11%,不含晶质矿物成分。更多还原

【Abstract】 Normal gemological instruments and modern techniques such as Fourier transform infrared,X-ray diffraction,atomic absorption spectroscopy and atomic fluorescence spectroscopy are used to test some black coral samples from Hainan.The results indicates that their color is dark brown,gray black to black and the margin of slice or powder of black coral appears brown color,translucence to opaque,greasy luster,refractive index 1.56;with a papilla surface and a circle ring structure on the cross section just like trees;hardness 2.5-3,density 1.34-1.37 g/cm3.They show good toughness and an odor of seared hair when tested with hot needle.Black coral is mainly composed of organic material protein,their total amino acid gross is 64.11%,without crystalline mineral.更多还原