| 海水及淡水养殖珍珠的物质组成 |
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| 引用本文： | 李立平.海水及淡水养殖珍珠的物质组成[J].地球科学,2009,34(5):752-758. |
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| 作者姓名： | 李立平 |
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| 作者单位： | 中国地质大学珠宝学院, 湖北武汉 430074 |
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| 基金项目： | 湖北省科技攻关项目“珍珠改色新技术研究”(No.2003AA101C99) |
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| 摘 要： | 采用偏光显微镜、X射线粉晶衍射仪、傅利叶红外光谱仪、电子顺磁共振谱仪、拉曼光谱仪、原子吸收光谱仪等测定了淡水珍珠、海水珍珠及部分贝壳的矿物及化学组成.研究表明: 珍珠矿物组成单一, 主要由文石构成, 仅含少量球文石或方解石; 淡水珍珠明显富含Mn, 而海水珍珠中明显富含Na、K、Mg、Sr; 这种富集特征与淡水、海水中元素的富集特征相似.此外, 各颜色品种之间化学成分也存在微小的差异, 白色珍珠比有色珍珠更纯净, 所含铁、锰、铬等致色元素更低.紫色珍珠略富含Mg、Mn, 橙色者明显富含Fe, 而黑色海水珍珠的颜色可能与有机组分有关.
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| 关 键 词： | 养殖珍珠 矿物组成 化学组成 宝石 |
| 收稿时间： | 2009-03-18 |
Composition of Seawater and Fresh Water Cultured Pearls |
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| LI Li-ping Gemmological Institute,China University of Geosciences,Wuhan,China.Composition of Seawater and Fresh Water Cultured Pearls[J].Earth Science-Journal of China University of Geosciences,2009,34(5):752-758. |
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| Authors: | LI Li-ping Gemmological Institute China University of Geosciences Wuhan China |
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| Institution: | LI Li-ping Gemmological Institute,China University of Geosciences,Wuhan430074,China |
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| Abstract: | Petrographic microscope,XRD,infra-red spectrometer,electron spin resonance(ESR),Raman spectrometer,atomic absorption spectrometer were used to analyze the mineralogical and chemical composition of seawater and fresh water cultured pearls in this paper.The results show that pearls mainly consist of aragonite,with very few varterite and calcite.Fresh water cultured pearls are rich in Mn,but sea water cultured pearls rich in Na,K,Mg,and Sr.The enrichement character of freshwater pearl and seawater pearl is ver... |
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| Keywords: | cultured pearls mineral composition chemical composition jewels |
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