Laser-Induced REE³⁺ photoluminescence of selected accessory minerals - an "advantageous artefact" in Raman spectroscopy

Autor(en)

Christoph Lenz, Lutz Nasdala, Dominik Talla, Roland Seitz, Christoph Hauzenberger, Uwe Kolitsch

Abstrakt

Laser-induced photoluminescence of trivalent rare-earth elements (REEs), which is obtained as analytical artefacts in Raman spectra of selected accessory minerals, was studied. Spectra of natural titanite, monazite-(Ce), xenotime-(Y), and zircon samples from various geological environments were compared with emission spectra of synthetic, flux-grown analogues doped with REEs. The latter is of great importance to identify potentially mistakable bands as either Raman or PL signal, and to assign them to certain REE centres. In the samples investigated, various REE centres are excited selectively using 473, 514, 532, 633, and 785. nm laser excitation. Their assignment was verified by photoluminescence-excitation experiments. Luminescence spectral patterns of zircon and titanite vary in dependence of trace-REE concentrations, hence reflecting geochemical growth conditions. "REE artefacts" in Raman spectra of accessory minerals may be used as fingerprint tool for mineral phase-identification. The distribution of REE emission-intensities, revealed by hyperspectral mapping, opens up the opportunity to visualise mineral textures, complementary to cathodoluminescence imaging-techniques.

Organisation(en)

Institut für Mineralogie und Kristallographie

Externe Organisation(en)

Horiba Jobin Yvon GmbH, Masaryk University, Karl-Franzens-Universität Graz, Naturhistorisches Museum Wien (NHM)

Journal

Chemical Geology

Band

415

Seiten

1-16

Anzahl der Seiten

16

ISSN

0009-2541

DOI

https://doi.org/10.1016/j.chemgeo.2015.09.001

Publikationsdatum

09-2015

Peer-reviewed

Ja

ÖFOS 2012

104026 Spektroskopie, 105116 Mineralogie

Schlagwörter

ASJC Scopus Sachgebiete

Geochemistry and Petrology, Geology

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/laserinduced-ree3-photoluminescence-of-selected-accessory-minerals--an-advantageous-artefact-in-raman-spectroscopy(baa04cdd-a69d-48f7-a0be-b74ccfb674cd).html