Luminescence behaviour of beryl (aquamarine variety) from Turkey
No Thumbnail Available
Date
2012
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Natural blue-green beryl from Turkey has been investigated using scanning electron microscopy-energy-dispersive spectroscopy (SEM-EDS), X-ray diffraction (XRD) and Cathodoluminescence (CL). Beryl has the chemical formula Be 3Al 2Si 6O 18 and is hexagonal with space group P6/mcc. Chemical analyses of the beryl sample utilised inductively coupled plasma-atomic emission spectroscopy (ICP-AES) for major oxides and trace elements. It shows that the beryl sample is rich in Cs (531 ppm) and contains low concentrations of transition-metal ions, in total 2.29 wt.% Fe, 269 ppm Mn, V<5 ppm and Cr 20 ppm. Ideas on the origin of the green colour of this mineral are presented. The CL spectrum of the bulk sample display intense broad band emission from ∼360 to ∼800 nm. © 2012 Elsevier B.V. All rights reserved.
Description
Keywords
Atomic emission spectroscopy , Cesium , Chemical analysis , Chlorine , Chromium , Energy dispersive spectroscopy , Inductively coupled plasma , Manganese , Metal ions , Scanning electron microscopy , Transition metals , X ray diffraction , Aquamarine , Broadband emission , Bulk samples , Chemical formulae , ICP-AES , Inductively coupled plasma atomic emission spectroscopy , Low concentrations , Major oxides , Scanning electrons , SEM-EDS , Space Groups , XRD , Silicate minerals