Xenotime in the Lower Buntsandstein of Central Europe: Evidence from cathodoluminescence investigation |
| |
| Institution: | 1. CONICET-INGEOSUR and UNS-Departamento de Geología, San Juan 670, Bahía Blanca 8000, Argentina;2. Institut für Mineralogie und Kristallchemie, Universitaet Stuttgart, Azenbergstrasse 18, D-70174, Germany;1. Departamento de Geodinámica y Paleontología, Universidad de Huelva, Campus de Excelencia Internacional del Mar, CEIMAR, Avenida 3 de Marzo, s/n 21007 Huelva, España;2. Espacio Natural de Doñana, Junta de Andalucía, Ctra. El Rocío-Matalascañas, 21760 Almonte, Huelva, España;3. Instituto de Lengua, Literatura y Antropología, Centro de Ciencias Humanas y Sociales (CCHS), Consejo Superior de Investigaciones Científicas (CSIC), Calle Albasanz, 26-28. 28037 Madrid, España;4. Departamento de Estratigrafía y Paleontología, Facultad de Ciencias, Universidad de Granada, Avda. Fuentenueva S/N. 18002 Granada, España;5. Earth and Environmental Science Section, University of Geneva, Rue des Maraîchers 13, 1205, Geneva, Switzerland;6. Instituto de Historia, Centro de Ciencias Humanas y Sociales (CCHS), Consejo Superior de Investigaciones Científicas (CSIC), Calle Albasanz, 26-28, 28037 Madrid, España;7. Instituto de Arqueología de Mérida, Consejo Superior de Investigaciones Científicas (CSIC), Plaza de España 15, 06800, Mérida, España;8. Fundación del Hogar del Empleado (FUHEM), Colegio Lourdes, C/San Roberto, 8. 28011 Madrid, España |
| |
| Abstract: | Xenotime and zircon in heavy mineral separates of siliciclastic sediments can easily be distinguished by means of cathodoluminescence (CL). All shades of bright blue, yellow and grey to white colours have been reported for zircon while only bottle green to greenish yellow colours have been found in xenotime in heavy mineral separates of Lower Buntsandstein samples as well as in two samples from crystalline rocks from Bahia (Brazil) and the Karpaty Mts. (Slovakia). The CL-spectra of both minerals are commonly dominated by narrow emission bands of rare earth elements, especially Dy3+. The two different crystal lattices induce differences in the intensity ratios of the emission lines that are thought to be the reason for the different CL-colours. Additionally, intrinsic broad bands that may occur in the CL-spectra of zircon are missing in the xenotime spectra. The possibility to distinguish minerals with similar optical properties underlines the large potential of cathodoluminescence in sedimentary petrology. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
