| 韩国软玉的宝石学特征及结构分析 |
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| 引用本文： | 白峰,赵凯.韩国软玉的宝石学特征及结构分析[J].岩石矿物学杂志,2011,30(Z1):83-88. |
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| 作者姓名： | 白峰 赵凯 |
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| 作者单位： | 中国地质大学 珠宝学院, 北京 100083;中国地质大学 珠宝学院, 北京 100083 |
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| 基金项目： | 中国地质大学(北京)矿物岩石材料开发应用国家专业实验室开放基金资助项目(08B002) |
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| 摘 要： | 通过宝石学常规测试、显微硬度计、偏光显微镜观察、扫描电镜测试等方法,对韩国软玉的宝石学参数、结构特征进行了研究。研究表明,韩国产软玉相对密度为2.88～2.95,摩氏硬度为5.45～6.17。偏光显微镜下观察,韩国软玉的主要结构为显微-隐晶质变晶结构,常见交代假像结构、交代残蚀结构、碎裂结构,表明其重结晶作用不强烈。扫描电镜分析表明,韩国软玉的矿物颗粒大小不均,以纤维状为主,同时粗纤维状、柱状斑晶含量较高,纤维状透闪石定向性排列较明显。
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| 关 键 词： | 韩国 软玉 宝石学特征 结构 |
| 收稿时间： | 2011/5/20 0:00:00 |
| 修稿时间： | 2011/6/23 0:00:00 |
Gemological and structural characteristics of nephrite from South Korea |
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| BAI Feng and ZHAO Kai.Gemological and structural characteristics of nephrite from South Korea[J].Acta Petrologica Et Mineralogica,2011,30(Z1):83-88. |
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| Authors: | BAI Feng and ZHAO Kai |
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| Institution: | China University of Geosciences, Beijing 100083, China;China University of Geosciences, Beijing 100083, China |
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| Abstract: | In recent years, a lot of jade products from South Korea nephrite are sold on Chinese market. In order to find out the differences of the nephrites from different provenances, the authors studied the gemological and structural characteristics of South Korea nephrite for further analysis, with the purpose of distinguishing the provenances. The typical samples from South Korea were studied by using the conventional gemological methods, hardness test, polarizing microscope and scanning electron microscope test. The results shows South Korea nephrite''s density is from 2.88 g/cm3 to 2.95 g/cm3, and its hardness is from 5.45 to 6.17. A comparison of the basic properties of these products from different provenances reveals evidently that South Korea nephrite''s density and hardness are lower than those of other kinds of nephrite. Compared with particles of Hetian nephrite, South Korea nephrite''s particles are relatively in uniform distribution. By microscopic observation, the South Korea nephrite is mainly of microaphanitic texture. The metasomatic pseudomorphic texture, metasomatic relict texture and cataclastic texture exist widely in the South Korea nephrite samples. Recrystallization is not obvious. Scanning electron microscope test reveals that the South Korea nephrite is of fibrous texture. Column-shaped and fibrous tremolite phenocrysts are abundant. Directional orientation of fibrous tremolite is very distinct. |
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| Keywords: | South Korea nephrite gemological characteristics texture |
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