Some Complementary Data about the Spectroscopic Properties of Manganese Ions in Spodumene Crystals

Minerals

Antoni Winiarski¹  Mariola Kądziołka-Gaweł¹  Maria Czaja²  Radosław Lisiecki³ 

[1] August Chełkowski Institute of Physics, Faculty of Science and Technology, University of Silesia, 141–500 Chorzów, Poland;Institute of Earth Sciences, Faculty of Natural Science, University of Silesia, 41-200 Sosnowiec, Poland;Institute of Low Temperature and Structure Research, Polish Academy of Sciences, 50–422 Wrocław, Poland;

关键词: pink spodumene;    manganese;    irradiation effect;    optical absorption;    luminescence;   

DOI  :  10.3390/min10060554

来源: DOAJ

【 摘 要 】

The color change of the pink and colorless LiAlSi₂O₆ spodumene crystal due to irradiation and heating is explained. The hypothesis about the change of Mn³⁺ to Mn⁴⁺ after irradiation was rejected. For the studied crystals, it was shown that both Mn²⁺ and Mn³⁺ occupy the M2 (not the M1) crystal site. Spodumene crystals which are primary pink (kunzite) contain Mn³⁺ (and Mn²⁺) at the M1 site. By contrast, those that become pink due to irradiation and heating contain Mn³⁺ and Mn²⁺ at the M2 site. The emission band of the former is 625 nm, and for the latter, it is 591 nm.

【 授权许可】

Unknown