河北承德“热河玉”的宝石学特征
|
摘要
河北省承德市宽城满族自治县东部边缘与辽宁省凌源市交界处,矿山企业在开采金属矿的时候,发现了一种蛇纹石质玉,当地玉石市场称之为"热河玉"。该矿区所发现的蛇纹石质玉石颜色丰富、质地细腻,属于优质的玉石原材料。通过偏光显微镜观察、X射线粉末衍射分析以及红外光谱分析,得到了"热河玉"较为系统的研究数据。研究结果显示,"热河玉"的主要矿物组成为斜纤蛇纹石,具显微纤维交织结构,另含有一定量的透辉石和方解石。"热河玉"与国内常见的其他产地的蛇纹石质玉的外观特征差异主要表现在具有红色和黄色品种,其主要致色元素为Fe元素。"热河玉"由富含SiO_2的岩浆岩与白云质灰岩接触交代而成,是一种优质的玉石资源,具有较高的经济开发利用价值。
"Rehe jade", a new variety of serpentine jade, was discovered at the junction place between the Kuancheng Manzu Autonomous County, Chengde City, Hebei Province and Lingyuan City, Liaoning Province. In the paper, a systematic investigation with the help of polarizing microscope observation, X-ray powder diffraction analysis and infrared spectroscopic techniques for the "Rehe jade" was performed. The results showed that the "Rehe jade" mainly consists of clinochrysotile with micro-fiberous and interwoven structures, and minor components are diopside and calcite. The major difference between "Rehe jade" and other serpentine jades is its red and yellow colour, which is caused by Fe element. It was suggested that the "Rehe jade" from Hebei Province is formed by the contact metasomatism between SiO_2-rich magmatic rock and dolomitic limestone. It is a high-quality jade resource with high economic development and utilization value.
"Rehe jade", a new variety of serpentine jade, was discovered at the junction place between the Kuancheng Manzu Autonomous County, Chengde City, Hebei Province and Lingyuan City, Liaoning Province. In the paper, a systematic investigation with the help of polarizing microscope observation, X-ray powder diffraction analysis and infrared spectroscopic techniques for the "Rehe jade" was performed. The results showed that the "Rehe jade" mainly consists of clinochrysotile with micro-fiberous and interwoven structures, and minor components are diopside and calcite. The major difference between "Rehe jade" and other serpentine jades is its red and yellow colour, which is caused by Fe element. It was suggested that the "Rehe jade" from Hebei Province is formed by the contact metasomatism between SiO_2-rich magmatic rock and dolomitic limestone. It is a high-quality jade resource with high economic development and utilization value.
引文
[1] 张勇,柯捷,陆太进,等.黄色石英质玉石中“水草花”的物质组成研究[J].宝石和宝石学杂志,2012,14(3):1-5.
[2] 陈华,柯捷,周丹怡,等.从我国不同商品名称石英质玉石的宝石学特征探讨其定名[A].珠宝与科技——2015中国珠宝首饰学术交流会论文集,2015:161-171.
[3] 张勇,魏然,柯捷,等.黄色和红色石英质玉石的颜色成因研究[J].岩石矿物学杂志,2016,35(1):139-146.
[4] 张勇,周丹怡,陈华,等.应用同步辐射技术解析黄色-红色石英质玉石中的致色矿物[J].岩矿测试,2016,35(5):513-520.
[5] 程佑法,李建军,祝培明,等.泰山玉的产地特征及命名[J].人工晶体学报,2014,43(9):2 324-2 328.
[6] 宋鸿林,张长厚,王根厚,等.青龙县幅K50C004004 1/ 25万地质图[R].北京:中国地质大学(北京)地质调查研究院,2004.
[7] 杨念,况守英,岳蕴辉.几种常见无水碳酸盐矿物的红外吸收光谱特征分析[J].矿物岩石,2015,35(4):37-42.
[8] 彭文世,刘高魁.矿物红外光谱图集[M].北京:科学出版社,1982.
[9] 马永强.信宜蛇纹石及其相似玉石鉴定特征的研究[J].现代经济信息,2018:349-350.
[2] 陈华,柯捷,周丹怡,等.从我国不同商品名称石英质玉石的宝石学特征探讨其定名[A].珠宝与科技——2015中国珠宝首饰学术交流会论文集,2015:161-171.
[3] 张勇,魏然,柯捷,等.黄色和红色石英质玉石的颜色成因研究[J].岩石矿物学杂志,2016,35(1):139-146.
[4] 张勇,周丹怡,陈华,等.应用同步辐射技术解析黄色-红色石英质玉石中的致色矿物[J].岩矿测试,2016,35(5):513-520.
[5] 程佑法,李建军,祝培明,等.泰山玉的产地特征及命名[J].人工晶体学报,2014,43(9):2 324-2 328.
[6] 宋鸿林,张长厚,王根厚,等.青龙县幅K50C004004 1/ 25万地质图[R].北京:中国地质大学(北京)地质调查研究院,2004.
[7] 杨念,况守英,岳蕴辉.几种常见无水碳酸盐矿物的红外吸收光谱特征分析[J].矿物岩石,2015,35(4):37-42.
[8] 彭文世,刘高魁.矿物红外光谱图集[M].北京:科学出版社,1982.
[9] 马永强.信宜蛇纹石及其相似玉石鉴定特征的研究[J].现代经济信息,2018:349-350.