Gemmological, Mineralogical and Spectral Characteristics of the Jiacui Jade

Mingmei Lu; Ziqi Liu; Xiao Tang; Zhengyu Zhou; Yifang Chen; Junhao Zheng; Lingmin Zhang

doi:10.3788/LOP231642

Laser & Optoelectronics Progress, Volume. 61, Issue 15, 1530003(2024)

Gemmological, Mineralogical and Spectral Characteristics of the Jiacui Jade

Mingmei Lu¹, Ziqi Liu¹, Xiao Tang², Zhengyu Zhou^1,3,4、*, Yifang Chen¹, Junhao Zheng¹, and Lingmin Zhang¹

Author Affiliations

¹State Key Laboratory of Marine Geology, Tongji University, Shanghai 200092, China

²School of Intermedia Art, China Academy of Art, Hangzhou 310000, Zhejiang , China

³Shanghai Enginering and Technology Research Center of Gem and Material Technology, Shanghai 200092, China

⁴Laboratory of Gem and Technological Materials, Tongji University, Shanghai 200092, China

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Figures & Tables(11)

Fig. 1. Pictures of the samples

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Fig. 2. Antigorite. (a) Antigorite in sample JC-5 (single polarization); (b) directional arranging antigorite in sample JC-5 (orthogonal polarization); (c) needle-like interwoven structures of the antigorite in sample JC-2 (orthogonal polarization)

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Fig. 3. Tremolite. (a) Sample JC-3 under the single polarization microscope; (b) sample JC-3 under the orthogonal polarization microscope

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Fig. 4. Calcite group. (a) Flash bulge of the calcite in sample JC-1 (single polarization); (b) interference color and poly-sheet bicrystal of the calcite in sample JC-1 (orthogonal polarization); (c) boundary of the calcite and antigorite in sample JC-2 (orthogonal polarization); (d) clustered calcite in sample JC-6 (orthogonal polarization)

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Fig. 5. Infrared spectra of all samples

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Fig. 6. Raman spectra of the antigorite

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Fig. 7. Raman spectra of the tremolite

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Fig. 8. Raman spectra of the calcite and dolomite. (a) Calcite; (b) dolomite

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Table 1. Relative densities and refractive indices of the samples
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Table 1. Relative densities and refractive indices of the samples
Sample Relative density /（g/cm³） Refractive index
JC-1 2.53 1.56
JC-2 2.55 1.56
JC-3 2.60 1.56
JC-4 2.62 1.56
JC-5 2.65 1.56
JC-6 2.58 1.56
JC-7 2.67 1.56
JC-8 2.63 1.56

Table 2. Quantitative test results of silicate mineral chemical composition

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Table 2. Quantitative test results of silicate mineral chemical composition

Sample	Point	Mass fraction /%												Mineral
Sample	Point	Na₂O	Al₂O₃	F	MgO	SiO₂	K₂O	TiO₂	CaO	FeO	MnO	Cr₂O₃	Total	Mineral
JC-1	01	0.011	0.029	0.114	40.851	43.943	0.010	0	0.102	0.145	0.024	0	85.181	Antigorite
JC-1	02	0.015	0	0	41.299	44.259	0	0.032	0.003	0.093	0.009	0.012	85.722	Antigorite
JC-2	01	0.009	0	0.057	41.512	44.460	0.019	0	0.027	0.222	0.015	0.057	86.354	Antigorite
JC-2	02	0.026	0.015	0	41.248	44.413	0	0	0.147	0.137	0.009	0	85.995	Antigorite
JC-4	01	0	0.013	0	40.743	45.328	0.007	0.036	0.576	0.297	0.033	0	87.033	Antigorite
JC-4	02	0.020	0	0	24.391	58.773	0.003	0.067	14.009	0.095	0	0.084	97.442	Tremolite
JC-4	03	0	0	0.068	18.472	55.338	0.008	0	25.845	0.044	0	0.005	99.751	Diopside
JC-4	04	0.002	0.008	0.032	24.232	58.773	0.023	0	13.814	0.123	0.037	0.002	97.033	Tremolite
JC-4	03	0.008	0.033	0	18.594	55.311	0.011	0	25.578	0.036	0.050	0	99.621	Diopside
JC-7	01	0	0	0.085	41.288	44.408	0	0	0.036	0.335	0.026	0	86.142	Antigorite
JC-7	02	0	0.073	0.086	41.077	44.728	0	0.020	0.006	0.332	0	0.021	86.307	Antigorite

Table 3. Quantitative test results of carbonate mineral chemical composition

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Table 3. Quantitative test results of carbonate mineral chemical composition

Sample	Point	Mass fraction /%											Mineral
Sample	Point	Al₂O₃	SiO₂	MgO	SrO	SO₃	P₂O₅	CaO	FeO	MnO	CO₂	Total	Mineral
JC-1	03	0	0	0.352	0.001	0	0	54.271	0	0	44.340	98.964	Calcite
JC-1	04	0.045	0	0.453	0	0.067	0	53.796	0.073	0.019	44.423	98.876	Calcite
JC-2	01	0.030	0	0.732	0.147	0.067	0	54.443	0	0.047	44.198	99.664	Calcite
JC-4	05	0	0.151	0.314	0.018	0.089	0.152	54.853	0	0	44.236	99.813	Calcite
JC-4	06	0.030	0	0.588	0	0	0	54.579	0	0.131	44.203	99.531	Calcite
JC-7	03	0.025	0	0.280	0	0	0	54.536	0.092	0.028	44.247	99.208	Calcite

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Mingmei Lu, Ziqi Liu, Xiao Tang, Zhengyu Zhou, Yifang Chen, Junhao Zheng, Lingmin Zhang. Gemmological, Mineralogical and Spectral Characteristics of the Jiacui Jade[J]. Laser & Optoelectronics Progress, 2024, 61(15): 1530003

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