一种新兴宝玉石材料——苏纪石的宝石矿物学研究

Study on Gemological and Mineralogical Characteristics of Sugilite——A New Gem-quality Material

苏纪石,作为珠宝市场上一种新兴宝玉石材料,其宝石矿物学在研究领域上还属于空白。本文对市场上具有代表性的苏纪石样品进行了宝石矿物学研究。通过宝石常规测试可知苏纪石样品为集合体玉石,大多为蓝色、紫色及褐色,结构细腻。密度为2.74～3.47g/cm3,折射率为1.55～1.65。在紫外光下不发荧光,摩氏硬度为6.097～6.497。通过电子探针、X-射线粉晶衍射分析得出,苏纪石样品的主要矿物成分为苏纪石,并含有针钠钙石、霓石、石英等杂质矿物。

Sugilite, a new gem-quality material used in gem market, has not been studied in gemological and mineralogical characteristics in the past time. Gemological and mineralogical character of sugilite＇s samples were studied by means of gem identification machines, micro-sclerometer, EPMA, X-ray powder diffraction in this paper. Sugilite＇s colors are blue, purple and brown. Sugilite＇s density is 2.74-3.47g/cm^3. Sugilite＇s refractive index is 1.55-1.65.Sugilite＇s hardness is 6.097-6.497. Sugilite＇s main mineral composition is sugilite and is associated with pectolite, aegirite, quartz, etc.