Scheelite CL/SEM spectrum, 20 keV e<sup>-</sup> beam, CSIRO 2016

Scheelite CL/SEM spectrum, 20 keV e^- beam, CSIRO 2016

Description	CL/SEM spectrum of Scheelite
Reference	Otherwise unpublished luminescence spectra measured by the CSIRO Mineral Resources Microbeam Laboratory, Clayton https://research.csiro.au/microbeam-lab/
Material	Scheelite [ CaWO₄ ] Luminescence of scheelite (blue) on muscovite under UV shortwave illumination, from Yaogangxian Mine, Yaogangxian W-Sn ore field, Yizhang Co., Chenzhou Prefecture, Hunan Province, China © Photo by Géry PARENT (via Wikimedia Commons), Public Domain
Specimen temperature	Ambient
Technique	Cathodoluminescence (CL), using an Electron Probe Micro-Analyser (EPMA)
Instrument	JEOL 8500F
Probe	20 keV electron beam
Beam current	10 nA
Probe diameter	20 μm
Channel count	1024
Energy range	1.276 … 6.21118 eV
Intensity range	2.174 … 5947.88 counts
Integral	1.2900×10⁶ counts
Lines	Dy³⁺ 2.59846 eV (8%), 2.54684 eV (10%), 2.16102 eV (52%), 2.1806 eV (20%) Gd³⁺ 3.97184 eV (2%) {{linesearch:d873c5f1-3038-4b15-ad68-b02b95530d7d\|Ho³⁺}}: 1.6456 eV (2%), 1.9199 eV (3%) Nd³⁺ 1.4236 eV (2%), 1.3945 eV (1%), 1.35711 eV (1%), 1.31121 eV, 1.3301 eV Tb³⁺ 2.2819 eV (16%) {{linesearch:c45ea99f-a3f3-49c2-ab00-5bd7e8405164\|WO4^2-}}: 2.76 eV (100%)

Nominal composition of Scheelite [ CaWO₄ ].
Element	Atoms	At%	Wt%
Ca	1	16.7	13.9
W	1	16.7	63.9
O	4	66.7	22.2

CL/SEM spectrum of Scheelite