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Volume 26 Issue S1
Oct.  2024
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SUN Yuan, LI Ziwei, QIU Zhili, LI Dongsheng, YANG Yufu. Stability of "Chicken-Blood Jade" (Quartzose Jade) from Guilin: Based on Thermogravimetric Analysis and Infrared Spectroscopy[J]. Journal of Gems & Gemmology, 2024, 26(S1): 43-45.
Citation: SUN Yuan, LI Ziwei, QIU Zhili, LI Dongsheng, YANG Yufu. Stability of "Chicken-Blood Jade" (Quartzose Jade) from Guilin: Based on Thermogravimetric Analysis and Infrared Spectroscopy[J]. Journal of Gems & Gemmology, 2024, 26(S1): 43-45.
shu

Stability of "Chicken-Blood Jade" (Quartzose Jade) from Guilin: Based on Thermogravimetric Analysis and Infrared Spectroscopy

  • 1.

    Key Laboratory of Non-Ferrous Metal Oxide Electronic Functional Materials and Devices (Guilin University of Technology), Education Department of Guangxi Zhuang Autonomous Region, Guilin University of Technology, Guilin 541004, China

  • 2.

    College of Earth Sciences, Guilin University of Technology, Guilin 541004, China

  • 3.

    School of Earth Science and Engineering, Sun Yat-sen University, Zhuhai 519080, China

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  • Received Date: July 14, 2024
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    • Abstract

  • The "chicken-blood jade" from Guilin is a new type of quartzose jade developed and applied in China in the past 20 years.In this paper, 19 samples of "chicken-blood jade" were collected from Shanglang mining area, Longsheng county, Guilin, Guangxi.And after infrared spectroscopy test, 7 samples were selected to be crushed and ground to 200 mesh powder for thermogravimetric analysis. The test results show that the mineral component of the "chicken-blood jade" from Guilinis mainly α-quartz.The jade is more delicate, with a certain amount of adsorbed water. Some "chicken-blood jade" jewelry from Guilin may exhibit phenomena such as "cotton", lighter colour, and reduced transparency over time during daily wear and storage. which may be related to the dehydration of minerals containing adsorbed water in "chicken-blood jade" from Guilin, leading to a loose structure. However, this phenomenon is reversible.

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  • Table  1.  Gemmological characteristics of the "chicken-blood jade" samples from Guilin
    样品编号 外观描述 平均折射率(点测) 平均相对密度
    SL-15 基底黑色，可见大面积的深、浅红色、血块状浓集，带有白色细脉状石英 1.54~1.55 2.81
    SL-16 基底黑色，可见深浅不一的红色呈血块状大面积浓集 1.54~1.55 2.77
    SL-17 基底黑色，深浅不一的红色呈血块状浓大面积分布，有白色石英不规则分布 1.54~1.55 2.80
    SL-18 基底黑色，暗红、鲜红色不均匀分布，带有白色石英 1.54~1.55 2.78
    SL-19 基底黑色，鲜红色呈血块状浓集 1.54~1.55 2.83
     | Show Table
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    Figure  1.  "Chicken-blood jade" samples from Guilin and their TG curve
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    衷心感谢广西桂林市龙胜各族自治县宝玉石开发领导小组办公室前主任蒋承德、桂林市鸡血玉协会副会长蒙世亮、龙胜全域旅游投资开发有限公司董事长陈善华等在研究团队野外矿区调研和采样中给予的热情帮助。

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