Abstract
Time-delayed laser-induced luminescence of uranium and rare-earth elements (REE) in apatite of fossil fish teeth from the phosphorites of the Senonian Mishash Formation, Israel, were investigated before and after thermal treatment. The unheated samples show luminescence of UO2+2. Luminescence of REE3+ (Sm, Eu, Pr) is observed only after heating the samples at 1100 K in air. The spectral properties indicate that UO2+2 in the unheated samples is located in two different positions, as aqua-complexes of uranyl-ions and associated with organic matter. The REE in the unheated samples are accommodated in non-luminescent form. After heating the REE3+ (Sm, Eu, Pr) are located in the Ca2+ II site presumably due to thermal diffusion.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
