红宝石-玻璃充填红宝石--亓利剑.docVIP

PAGE 1 PAGE ７ 充填处理红宝石中的高铅玻璃体 亓利剑 摘要：以珠宝市场上新近面市的高铅玻璃充填处理红宝石为研究对象，采用常规检测与实验室测试技术（EPMA、UV-VIS-NIR、LRS ）相结合的研究方法，对充填处理红宝石中次生玻璃的化学成分、晶相、空间分布、显微结构及某些谱学特征进行较深入的研究。测试结果表明，与传统的铝硅酸盐玻璃、磷铝玻璃、硼质钠铝玻璃高温充填处理红宝石的表现特征明显不同，该类充填处理红宝石中次生玻璃主化学成分为W（PbO）74-75%，次为W（Al2O3）13-14%及W（SiO2）11-12%，且结晶程度差。通常，内部存在少量晶形完好的针状金红石、磷灰石等结晶矿物包裹体。依据特征的蓝色～蓝绿色异常闪光效应、残存的扁平状气泡、 UV-VIS、LRS和EPMA二次电子像及背散射电子像特征有助于识别这种高铅玻璃充填处理红宝石。分析认为，此类红宝石是在中温加热条件下，沿红宝石原裂隙处填入高铅玻璃材料而成。 关键词：红宝石；高铅玻璃 ；充填处理 Lead-rich Glass Substance in Filled Treated Rubies QI LI-jian1，ZENG Chun-guang2，YUAN Xin-qiang1， （1 Gemmological Institute，China University of Geosiences，Wuhan 430074，China ） （2 Nan Yang Gemological Institute, Singapore ） Abstract：The latest developed lead-rich glass-filled rubies， which have recently appeared in Gem markets， is researched.By using routine analysis in corporation with advanced lab analysis techniques such as EPMA, UV-VIS and LRS, the chemical composition, crystal phase, space distribution, and microstructure as well as spectrum characteristics of secondary glass for such treated rubies were investigated in depth. The results showed the main chemical composition of the glass filler is W（PbO）74-75%, followed by W（Al2O3）13-14% and W（SiO2）11-12%, and the crystallization is poor. In addition, there are some crystal inclusions such as rutile and apatite are not altered or dissolved during the treatment, which normally seen in unheated corundum. All these features are quite different from the traditional rubies which are treated by aluminium silicate glass ，phosphorus aluminium glass and boron natrium-aluminium glass. Blue flash effect, residual flat gas bubbles, UV-VIS, LRS, EPMA backscattered electron imagine and secondary electron image usually give enough evidence for detection of this latest treatment. The analysis results showed that the fissures and cracks in rubies were filled with lead-rich glass at medium temperature. Key words： ruby；lead-rich glass； filling treatment. 传统的高温充填处理红宝石中残存的充填物成分主要为硼质钠铝玻璃、