Xiao-xu YAN, Pei-lian WANG, Su-wei YUE. Spectroscopic Characteristics and Coloring Mechanism of Greenish-Yellow Beryl Under Heating Treatment[J]. Spectroscopy and Spectral Analysis, 2020, 40(12): 3795
- Spectroscopy and Spectral Analysis
- Vol. 40, Issue 12, 3795 (2020)
Fig. 1. Character of yellowish green beryl samples after heating-treatment at reducing condition
Fig. 2. Character of greenish yellow beryl samples after heating-treatment of oxidizing condition
Fig. 3. Comparison of IR spectra between natural and heated Beryl samples
(a): Natural sample b1; (b): Heated sample b5 (light-blue); (c): Heated sample b10 (light-blue)
(a): Natural sample b1; (b): Heated sample b5 (light-blue); (c): Heated sample b10 (light-blue)
Fig. 4. Comparison of UV-Vis spectra between natural and heated beryl samples
(a): b4; (b): b5; (c): b6; (d): b8; (e): b9; (f): 10
(a): b4; (b): b5; (c): b6; (d): b8; (e): b9; (f): 10
Fig. 5. Comparison of EPR spectra between natural and heated beryl samples
(a): The original spectrum of EPR; (b): The partial enlarged spectrum between 2 500~4 000 H (Gauss)
(a): The original spectrum of EPR; (b): The partial enlarged spectrum between 2 500~4 000 H (Gauss)
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Table 1. Representation and arrangement of IR spectra of beryl samples
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