Characteristics of Inclusions in Lead Glass-Filled Ruby
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摘要: 采用宝石显微镜、电子探针及其背散射电子成像技术研究了目前市场上的一种铅玻璃充填红宝石样品,重点分析了其固体包裹体的成分、形态、分布等特征以及铅玻璃充填物。该红宝石原石样品为暗红色浅红色,透明半透明,以六方柱状为主,未见或少见桶状或腰鼓状。研究结果显示,样品经过了铅玻璃充填与热处理,但处理温度较低,其矿物包裹体没有明显的热熔现象。其矿物包裹体有金红石、锆石、磷灰石、云母以及尖晶石等。其中,金红石包裹体可分为先成与同生两种,先成金红石包裹体可见破损现象,同生金红石包裹体主要呈短柱状,部分为长柱状。最后,对该红宝石样品中包裹体的成因及其可能产地进行了讨论。Abstract: A kind of lead glass-filled ruby samples on the market nowadays are studied by using the gemmological microscope,electron microprobe with backscattered electron imaging technology,as well as the composition,morphology,distribution characteristics of the solid inclusions and the lead glass-fillings are analysed.The ruby rough samples are dark red to light red,transparent to translucent,most of which are hexagonal column and barrel or drum shapes are rare or no.The results show that the ruby samples have been obviously modified by the lead glass-filling and heat treatment,but the treatment temperature is lower and the mineral inclusions have no hot-melt phenomenon.The mineral inclusions mainly include rutile,zircon,apatite,biotite,spinel and so on.The rutile inclusions have protogenetic and syngenetic stages.The protogenetic rutile inclusions are of fragmentation.The syngenetic rutile inclusions are mainly short column,and some are long column.At last,the cause of the inclusions and locality in ruby samples are also discussed.
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Keywords:
- ruby /
- inclusion /
- rutile /
- lead glass-filling
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