Laser-induced time-resolved luminescence of tugtupite, sodalite and hackmanite

Luminescence and tenebrescence of natural sodalites: a chemical and structural study

“…Yet, Fe was found to be constrained to the weak but clearly reddish luminescence in some samples which is illustrated in Fig. 6 and which was also observed by Gaft et al (2009) and Kaiheriman et al (2014).…”

“…In sodalite, the cause of PL has been assigned to Mn 2+ partially substituting for Na + causing green PL, and to Fe 3+ partially replacing Al 3+ , causing red PL (Gaft et al 2009;Kaiheriman et al 2014). Yellow-orange PL, which is observed in sodalites investigated in this study, has been ascribed to the disulphide anion S 2 2− (Kirk 1955;Ballentyne and Bye 1970;Warner 2011) or the radical anion (Taylor et al 1970;Warner 2011;Kaiheriman et al 2014).…”

“…Blue PL (at least in synthetic materials) has been ascribed to O 2 − but also to rare earth elements (REE) such as Eu 2+ and Ce 3+ . The elements Pb 2+ , Tl + , Sn 2+ and Sb 3+ are also known to form luminescence centres (Van Doorn and Schipper 1971;Marfunin 1979;Gaft et al 2009;Kaiheriman et al 2014). Chemical substitutions may result in changes in the unit-cell dimension, which change the electronic structure of a mineral and thus its physical and optical properties (Kai et al 1979;Thomson and Wentzcovitch 1998).…”

“…For sodalite, excitation with either LW-or SW-UV light results in a yellow-orange and orange-red PL, respectively (Deribere 1937;Iwase 1938;Sidike et al 2007;Gaft et al 2009;Kaiheriman et al 2014). Photoluminescence, depending on energy and absorption, can explore both surface and bulk properties, while cathodoluminescence (CL), which is generated by radiation with electrons, typically explores luminescence in the near surface region (Townsend et al 1999).…”

“…Miser and Glass 1941;Medved 1954;Kirk 1955;Sidike et al 2007;Gaft et al 2009) as well as cathodoluminescence (CL) when excited with electrons (Krumrei et al 2007). These properties make photochromic minerals such as sodalite a key focus for material science, and their possible applications in industry have long been known (Medved 1954;Taylor et al 1970).…”