高温高压合成翡翠的谱学特征初探

邢莹莹; 何涌

doi:10.11858/gywlxb.20180545

高温高压合成翡翠的谱学特征初探

doi: 10.11858/gywlxb.20180545

邢莹莹^{1, 2,},
何涌²

1.
华南理工大学广州学院珠宝学院, 广东广州 510800
2.
中国地质大学(武汉)材料与化学学院, 湖北武汉 430074

基金项目:

国家自然科学基金 41272049

详细信息

作者简介:
邢莹莹(1984-), 女, 博士研究生, 副教授, 主要从事宝石矿物学研究. E-mail:xingyy@gcu.edu.cn

中图分类号: O521.2
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出版历程
- 收稿日期: 2018-04-23
- 修回日期: 2018-05-25

Preliminary Study of Spectral Characteristics of HTHP Synthetic Jadeite

XING Yingying^{1, 2
,},
HE Yong²

1.
Gemmologocal Institute, Guangzhou College of South China University of Technology, Guangzhou 510800, China
2.
Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China

摘要

摘要: 通过电子探针、X射线粉晶衍射、傅里叶变化红外光谱、激光拉曼光谱、紫外-可见光吸收光谱和光致发光光谱对合成翡翠矿物谱学特征及呈色机理进行系统的测试与分析。研究结果显示，合成翡翠与天然翡翠外观、矿物成分、拉曼光谱及光致发光光谱表征基本一致，但红外吸收光谱、紫外光谱以及化学成分均出现较为明显的差异，具体表现为：较低的Fe含量导致可见光区域内437 nm吸收谱带缺失；由于微量元素的含量和形成环境差异，导致红外光谱表征中ν（M/Cr-O）和ν_as（M-OH）伸缩振动所致的红外吸收谱带表征出与天然翡翠较大的差异。
- 高温高压 /
- 合成翡翠 /
- 谱学表征 /
- 矿物学特征
Abstract: The systematic test and analysis of the spectral characteristics and color mechanism of the synthetic jadeite are carried out by using electron probe, X-ray powder diffraction, Fourier transform infrared spectroscopy, laser Raman spectra and UV-VIS absorption spectra and photoluminescence spectra.The research results show that the appearance, mineral composition, Raman spectra, and photoluminescence spectra of the synthetic jadeite are almost the same as natural jade.However, there are obvious differences between FTIR, UV-VIS and chemical components.The specific performance is as follows:the low content of Fe leads to the loss of 437 nm absorption band in the visible range; in addition, the differences of content of trace elements and formation environment lead to large differences of infrared absorption band caused by stretching vibration of ν(M/Cr-O) and ν_as(M-OH).
- HTHP /
- synthetic jadeite /
- spectral characteristics /
- mineralogical characteristics

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图 1 合成翡翠(SJ-1)和天然翡翠样品(NJ-1)

Figure 1. Synthetic (SJ-1) and natural (NJ-1) jadeite samples

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图 2 合成翡翠(SJ-1)与天然翡翠(NJ-1)X射线粉晶衍射图

Figure 2. XRD spectra of synthetic (SJ-1) and natural (NJ-1) jadeite samples

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图 3 合成翡翠与天然翡翠红外光谱表征(2 000~400 cm^-1)

Figure 3. FTIR spectra of synthetic and natural jadeite samples (2 000-400 cm^-1)

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图 4 合成翡翠与天然翡翠红外光谱表征(4 000~2 000 cm^-1)

Figure 4. FTIR spectra of synthetic and natural jadeite samples (4 000-2 000 cm^-1)

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图 5 合成翡翠与天然翡翠激光拉曼光谱表征

Figure 5. Representation of Raman spectra of synthetic and natural jadeite samples

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图 6 合成翡翠与天然翡翠紫外-可见吸收光谱表征

Figure 6. Representation of UV-VIS spectra of synthetic and natural jadeite samples

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图 7 合成翡翠与天然翡翠光致发光光谱表征

Figure 7. Representation of PL spectra of synthetic and natural jadeite samples

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表 1 合成翡翠与天然翡翠样品的化学成分

Table 1. Chemical analyses of synthetic and natural jadeite samples

(%)
Sample	Na₂O	Cr₂O₃	K₂O	MgO	MnO	CaO	Al₂O₃	FeO	TiO₂	SiO₂	Total
NJ-1	13.721	0.073	0.052	0.370	0.012	0.962	22.467	1.870	0.092	59.951	99.570
SJ-2-1	15.087	0.062	0.016	0.006	0.018	0.044	24.787	0.025	0	59.478	99.523
SJ-2-2	13.847	0.064	0.028	0	0	0.063	23.826	0.015	0	62.353	100.196
SJ-2-3	13.446	0.066	0.031	0.016	0	0.064	23.962	0	0	61.090	98.675
SJ-2AVE	14.130	0.064	0.025	0.007	0.006	0.057	24.190	0.013	0	60.970

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表 2 合成翡翠与天然翡翠的红外吸收光谱特征与归属

Table 2. Representation and attribution of FTIR of synthetic and natural jadeite samples

Sample No.	Spectral peak/cm^-1	Adscription
SJ-1	3 612，3 470，3 373 1 089，1154 1 054，999，919，846 746，665 598 534，491，436，396	ν_as(M—OH) ν_as(Si—O—Si) ν_as(O—Si—O) ν_s(Si—O—Si) δ(Si—O) ν(M/Cr—O)
NJ-1	3 614，3 541，3 461，3 397，3 325，3 228，3 181 1 077，1 164 959，856 745，665 582 529，467，435，399，363	ν_as(M—OH) ν_as(Si—O—Si) ν_as(O—Si—O) ν_s(Si—O—Si) δ(Si—O) ν(M/Cr, Fe—O)

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