不同产地软玉品种的矿物组成、显微结构及表观特征的对比研究

鲁力, 边智虹, 王芳, 魏均启, 冉晓红

鲁力, 边智虹, 王芳, 魏均启, 冉晓红. 不同产地软玉品种的矿物组成、显微结构及表观特征的对比研究[J]. 宝石和宝石学杂志, 2014, 16(2): 56-64.
引用本文: 鲁力, 边智虹, 王芳, 魏均启, 冉晓红. 不同产地软玉品种的矿物组成、显微结构及表观特征的对比研究[J]. 宝石和宝石学杂志, 2014, 16(2): 56-64.
LU Li, BIAN Zhihong, WANG Fang, WEI Junqi, RAN Xiaohong. Comparative Study on Mineral Components,Microstructures and Appearance Characteristics of Nephrite from Different Origins[J]. Journal of Gems & Gemmology, 2014, 16(2): 56-64.
Citation: LU Li, BIAN Zhihong, WANG Fang, WEI Junqi, RAN Xiaohong. Comparative Study on Mineral Components,Microstructures and Appearance Characteristics of Nephrite from Different Origins[J]. Journal of Gems & Gemmology, 2014, 16(2): 56-64.

不同产地软玉品种的矿物组成、显微结构及表观特征的对比研究

基金项目: 

湖北省地质矿产勘查局科技项目Kj2012-19

详细信息
    作者简介:

    鲁力(1973-),女,高级工程师,矿物学、岩石学、矿床学专业,主要从事岩矿鉴定的检测与研究工作

  • 中图分类号: TS93

Comparative Study on Mineral Components,Microstructures and Appearance Characteristics of Nephrite from Different Origins

  • 摘要: 采用偏光显微镜、X射线粉末衍射仪、扫描电子显微镜、ICP-MS等分析测试方法,对目前市场上主要的软玉品种的化学成分、矿物组成、显微结构及表观特征进行了综合对比研究,结果表明,不同产地软玉品种的主要化学成分和主要矿物相似,微量元素及次要矿物存在差异,对产地和品种鉴别具有一定的指示意义。一般而言,新疆白玉及青白玉、优质的青海白玉、俄罗斯白玉具有毛毡状隐晶质变晶结构,透闪石质量分数高,纤维细小且紧密交织,反映在外观上质地细腻油润、光泽柔和,韧性强。新疆青玉、部分青海白玉、烟青玉、岫岩软玉以及韩国白玉以显微纤维交织结构、显微纤维-叶片状交织结构、显微纤维-粒状变晶结构及斑状变晶结构为主,透闪石质量分数相对较低,纤维粗且纤维之间的空隙大,表现在外观上质地粗糙,油润感差,韧性降低。新疆、俄罗斯及加拿大碧玉的结构类型和结晶度相似,表观特征差别不大。
    Abstract: Nephrite is mainly sold on the market in China(Xinjiang,Qinghai Province and Liaoning Province),Russia,Canada,South Korea and other places at present.The main kinds of jade are white jade,grayish jade,gray jade and green jade.Jade from different origins show the similar characteristics in mineralogy and petrology.However,it shows subtle differences in nephrite appearance from different origins due to the differences in mineral assemblages and tremolite crystallinity,particle size and arrangement.This study is aiming to find the common and different characteristics of nephrite from various orgins and to provide a more detailed theoretical guidance for identification. Using polarizing microscope, X-ray powder diffraction, scanning electron microscopy (SEM) and ICP-MS,the chemical compositions, mineral assemblage, microstructures and appearance characteristics of the main varieties of nephrite are studied. The results show that the chemical compositions and main minerals of nephrite from different origins are similar. However, there are differences in trace elements and secondary minerals, which could be a certain significance for identification. In general, white jade and grayish jade from Xinjiang, high quality white jade from Qinghai Province and Russia are flet-like cryptocrystalline blastic texture with high content of tremolite, where fiber structure is small and closely intertwined. Therefore, the jade is fine, glossy in appearance. While gray jade from Xinjiang, part of white jade, grayish jade from Qinghai Province, white jade from Xiuyan and South Korea are micro-fibrous interlocking texture, microfibre flaky blastic texture, microfibre granular crystal-loblastic texture and porphyroblastic texture. Content of tremolite in jade from those areas is relatively low, and fibers are coarse with large gap, which lead to rough texture and poor gloss in appearance and toughness decreasing. The structural types and crystallinity of jasper from Xinjiang,Russia and Canada are similar and it shows little difference in appearance characteristics.
  • [1] 周振华,冯佳睿.新疆软玉、岫岩软玉的岩石矿物学对比研究[J].岩石矿物学杂志,2010,29(3):331-340.
    [2] 汤红云,钱伟吉,陆晓颖,等.青海软玉产出的地质特征及物质成分特征[J].宝石和宝石学杂志,2012,14(1):25-31.
    [3] 杨汉臣,伊献瑞,易爽庭,等.新疆宝石和玉石[M].乌鲁木齐:新疆人民出版社,1985:71-105.
    [4] 廖任庆,朱勤文.中国各产地软玉的化学成分分析[J].宝石和宝石学杂志,2005,7(1):25-30.
    [5] 张晓辉,吴瑞华,王乐燕.俄罗斯贝加尔湖地区软玉的岩石学特征研究[J].宝石和宝石学杂志,2001,3(1):12-16.
    [6] 李冉,廖宗延,李玉加,等.青海软玉中硅灰石的确定及其意义[J].宝石和宝石学杂志,2004,6(1):17-19.
    [7] 刘飞,余晓艳.中国软玉矿床类型及其矿物学特征[J].矿产与地质,2009,23(4):375-380.
    [8] 王时麒,段体玉,郑姿姿.岫岩软玉(透闪石玉)的矿物岩石学特征成矿模式[J].岩石矿物学杂志,2012,21(增刊):79-89.
    [9] 李举子,吴瑞华,凌潇潇,等.和田软玉的化学成分和显微结构研究[J].宝石和宝石学杂志,2009,11(4):9-14.
    [10] 李玉加,廖宗延,史霞明.青海软玉与新疆软玉的对比研究[J].上海地质,2002,83(3):58-61.
计量
  • 文章访问数:  157
  • HTML全文浏览量:  22
  • PDF下载量:  34
  • 被引次数: 0
出版历程
  • 收稿日期:  2013-11-18

目录

    /

    返回文章
    返回