Laser & Optoelectronics Progress, Volume. 58, Issue 15, 1516029(2021)
Spectroscopic Characteristics and Coloring Mechanism of Green Kyanite
Kyanite belongs to the family of nesosilicate minerals with the standard chemical formula of Al2SiO5. Kyanite gems normally show various colors such as green, yellow, orange, brown, and colorless. Because of the controversial attribution of Cr3+ and Fe3+ in green kyanite, X-ray fluorescence (XRF), Fourier transform mid-infrared (Mid FT-IR), ultraviolet-visible light (UV-Vis), and electron paramagnetic resonance (EPR) spectroscopic analyses of green kyanite samples were conducted to understand the trace elements and coloring mechanism. Results showed that Fe3+, Fe2+, and Cr3+ in the samples widely exhibit isomorphism and charge transfer forms. Absorption peaks at 432 nm and 446 nm and a wide absorption band around 600 nm belong to the substitution of an
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Xiaoxu Yan, Suwei Yue, Lü Xinyi. Spectroscopic Characteristics and Coloring Mechanism of Green Kyanite[J]. Laser & Optoelectronics Progress, 2021, 58(15): 1516029
Category: Materials
Received: Jan. 8, 2021
Accepted: Feb. 5, 2021
Published Online: Aug. 6, 2021
The Author Email: Yue Suwei (yuesuwei@gcu.edu.cn)