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

Maria Czaja; Radosław Lisiecki; Mariola Kądziołka-Gaweł; Antoni Winiarski

doi:10.3390/min10060554

Minerals (Jun 2020)

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

Maria Czaja,
Radosław Lisiecki,
Mariola Kądziołka-Gaweł,
Antoni Winiarski

Affiliations

Maria Czaja: Institute of Earth Sciences, Faculty of Natural Science, University of Silesia, 41-200 Sosnowiec, Poland
Radosław Lisiecki: Institute of Low Temperature and Structure Research, Polish Academy of Sciences, 50–422 Wrocław, Poland
Mariola Kądziołka-Gaweł: August Chełkowski Institute of Physics, Faculty of Science and Technology, University of Silesia, 141–500 Chorzów, Poland
Antoni Winiarski: August Chełkowski Institute of Physics, Faculty of Science and Technology, University of Silesia, 141–500 Chorzów, Poland

DOI: https://doi.org/10.3390/min10060554
Journal volume & issue: Vol. 10, no. 6
p. 554

Abstract

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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.

Published in Minerals

ISSN: 2075-163X (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Geology: Mineralogy
Website: https://www.mdpi.com/journal/minerals

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