Laser & Optoelectronics Progress, Volume. 58, Issue 5, 0530001(2021)
Comparative Study on Spectral Characteristics of Natural and Flame-Melting Synthetic Spinels
Figures & Tables(16)
Fig. 6. XRF spectra of flame-melting synthetic spinels. (a) Sample S1; (b) sample S4
Table 1. Conventional gemological parameters of natural and synthetic spinels
View tableTable 1. Conventional gemological parameters of natural and synthetic spinels
No. Color Refractive index Ultraviolet fluorescence Spectroscope Morphology N1 Red 1.718 No No Clean inside N2 Purple 1.718 No No Clean inside N3 Blue 1.712 No No Healing fissure N4 Red 1.718 No No Clean inside N5 Purple 1.71(±) No No Healing fissure N6 Blue 1.720 No No Healing fissure N7 Pink 1.720 No No Colorless short columnar crystal inclusion N8 Pink 1.720 No No Clean inside N9 Rose 1.720 No No Clean inside N10 Blue 1.712 No No Clean inside S1 Blue 1.728 LW: no； SW: blue and white Co Curved growth pattern S2 Green 1.728 LW: no； SW: blue and white Co Curved growth pattern S3 White 1.728 LW: no； SW: blue and white No Curved growth pattern S4 Green 1.728 LW: no； SW: blue and white Co Clean inside S5 White 1.728 LW: no； SW: blue and white No Clean inside S6 Blue 1.728 LW: no； SW: blue and white No Clean inside
Table 2. FWHM of spinels
View tableTable 2. FWHM of spinels
Sample No. FWHM/cm-1 N1 13.8,12.5 N2 11.3,11.3 N3 12.0,13.4 N4 10.7,10.0 N5 11.4,10.8，11.9 N6 10.7,11.7 N7 10.4,10.8 N8 10.4,12.0,11.6 N9 13.3,14.3 N10 10.6,11.9 S1 13.9,7.4，7.7,2.8 S2 2.9，3.7,5.3 S3 6.9,3.0,8.8，6.8 S4 5.5，3.5,4.3,4.0 S5 1.3,4.6,3.9 S6 5.0，2.1，3.8,7.7
Table 3. Descriptive statistics of natural spinel and flame-melting synthetic spinel
View tableTable 3. Descriptive statistics of natural spinel and flame-melting synthetic spinel
Item Number of FWHM point Average of FWHM Bias of FWHM Error of FWHM Confidence interval Minimum of FWHM Maximum of FWHM Lower limit Upper limit Natural spinel 22 11.673 1.176 0.251 11.152 12.194 10.00 14.30 Synthetic spinel 22 5.223 2.792 0.595 3.985 6.461 1.30 13.90 Total 44 8.448 3.889 0.586 7.265 9.630 1.30 14.30
Table 4. ANOVA of natural spinel and flame-melting synthetic spinel
View tableTable 4. ANOVA of natural spinel and flame-melting synthetic spinel
Item Sum of squares Degree of freedom Mean square F Sig. Interblock 457.628 1 457.628 99.741 0 Group 192.702 42 4.588 Total 650.330 43
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Shanshan He, Pan Cao, Honglin Tan, Endong Zu. Comparative Study on Spectral Characteristics of Natural and Flame-Melting Synthetic Spinels[J]. Laser & Optoelectronics Progress, 2021, 58(5): 0530001
Paper Information
Category: Spectroscopy
Received: Jul. 6, 2020
Accepted: Aug. 13, 2020
Published Online: Apr. 19, 2021
The Author Email: Endong Zu (zend88@163.com)
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