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“西安绿”玉石的宝石矿物学特征研究

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文章导航 > 西北地质 > 2022 > 55(2): 217-226

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赵慧博, 同彦庄, 刘芳晓, 赵娟, 魏小燕, 刘三, 周宁超. 2022. “西安绿”玉石的宝石矿物学特征研究. 西北地质, 55(2): 217-226. doi: 10.19751/j.cnki.61-1149/p.2022.02.019
引用本文: 赵慧博, 同彦庄, 刘芳晓, 赵娟, 魏小燕, 刘三, 周宁超. 2022. “西安绿”玉石的宝石矿物学特征研究. 西北地质, 55(2): 217-226. doi: 10.19751/j.cnki.61-1149/p.2022.02.019
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ZHAO Huibo, TONG Yanzhuang, LIU Fangxiao, ZHAO Juan, WEI Xiaoyan, LIU San, ZHOU Ningchao. 2022. Study on the Characteristics of Gemology and Mineralogy of “Xi'an Green” Jade. Northwestern Geology, 55(2): 217-226. doi: 10.19751/j.cnki.61-1149/p.2022.02.019
Citation: ZHAO Huibo, TONG Yanzhuang, LIU Fangxiao, ZHAO Juan, WEI Xiaoyan, LIU San, ZHOU Ningchao. 2022. Study on the Characteristics of Gemology and Mineralogy of “Xi'an Green” Jade. Northwestern Geology, 55(2): 217-226. doi: 10.19751/j.cnki.61-1149/p.2022.02.019
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“西安绿”玉石的宝石矿物学特征研究

  • 1. 中国地质调查局西安地质调查中心, 陕西 西安 710054;

  • 2. 西北大学, 陕西 西安 710054;

  • 3. 陕西省珠宝玉石首饰行业协会, 陕西 西安 710054;

  • 4. 中煤科工集团西安研究院有限公司, 陕西 西安 710076

  • 基金项目:

    陕西省自然科学基金面上项目“新疆克拉玛依地区岩浆混合岩体中斜长石的精细结构特征研究”（2017JM4031）。

详细信息
    作者简介: 赵慧博(1987-),女,工程师,主要从事岩石矿物学研究工作。E-mail:zhaohuibo5566@126.com。
    通讯作者: 同彦庄(1967-),男,高级工程师,主要从事宝石学研究工作。E-mail:2570358351@qq.com。

  • 中图分类号: P57

Study on the Characteristics of Gemology and Mineralogy of “Xi'an Green” Jade

  • 1. Xi'an Center of China Geology Survey, Xi'an 710054, Shaanxi, China;

  • 2. Northwest University, Xi'an 710054, Shaanxi, China;

  • 3. Shaanxi Jewelry and Jade Jewelry Industry Association, Xi'an 710054, Shaanxi, China;

  • 4. China Coal Technology & Engineering Group Xi'an Research Institute Co. LTD, Xi'an 710056, Shaanxi, China

More Information

    摘要
  • “西安绿”玉石产于陕西南秦岭，是近几年珠宝市场上出现的高品质绿色印章和玉雕的材料，以颜色艳丽、细腻温润得到市场的认可。本次研究利用宝石学常规仪器、偏光显微镜、X粉晶衍射仪、电子探针、扫描电镜对玉石及围岩做了系统的宝石矿物学研究。包括与围岩的相互关系、成分特征、结构特征、颜色及成因等方面。结论为：①玉石产状呈团块状、脉状，围岩以大理岩为主，少量燧石，成因为蚀变交代成矿，常见后期石英脉与其共生，表现为穿插、交代关系。②玉石主要由伊利石组成，含少量的铬云母、钒云母、磷灰石、褐铁矿等。③玉石结构表现为由伊利石片状矿物紧密排列堆积，细腻玉石的颗粒大小约为0.002 mm×0.004 mm~0.007 mm×0.009 mm，颗粒较粗的玉石颗粒大小为0.006 mm×0.006 mm~0.025 mm×0.025 mm，矿物的形态与大小影响玉石的颜色及细腻程度。④玉石绿色颜色成因与伊利石中的V元素有关，V元素含量与绿色的深浅呈正相关关系，Ni元素可能也对颜色成因有一定的贡献；黄褐色、红褐色条带主要由含铁的金属矿物杂质引起。另外，笔者对其品质评价做了初步的建议，包括颜色、结构、杂质、块度及工艺等5个方面，可以为市场提供一定的理论依据。
    “Xi'an green” jade is produced in the south Qinling mountains of Shaanxi province. It is a high-quality green seal and jade carving material appearing in the jewelry market in recent years, and has been recognized by the market for its gorgeous color, delicate and moist. In this study, conventional gemological instruments, polarizing electron microscope, X-ray powder diffractometer, electron probe and scanning electron microscope were used to systematically study the gem mineralogy of jade and surrounding rock, including the relationship between jade and surrounding rock, composition characteristics, structural characteristics, color genesis and other aspects. The conclusions are as follows:① The occurrence of jade is in the form of mass and vein. The surrounding rock is mainly marble with a small amount of flint, which is caused by alteration metasomatism and mineralization. Quartz veins are commonly symbiosis with them in the later period, and the relationship is interspersed and metasomatism.② Jade is mainly composed of illite, containing a small amount of chromica, vanadium mica, apatite, limonite, etc. ③ The jade structure is characterized by the close arrangement and accumulation of illite flake minerals, The particle size of fine jade is about 0.002×0.004mm~0.007×0.009mm, and the particle size of coarse jade is 0.006×0.006mm~0.025×0.025mm.and the shape and size of the minerals affect the color and delicacy of the jade. ④ The cause of the green color of jade is related to the V element in illite. the content of V element is positively correlated with the depth of green, and the Ni element may also contribute to the origin of color. The yellow-brown and red-brown bands are mainly caused by iron-containing metallic mineral. In addition, preliminary suggestions for quality evaluation are made, including color, structure, impurity, lumpiness and process, which can provide some theoretical basis for the market.
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出版历程
收稿日期:  2021-09-03
修回日期:  2021-11-23

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