Zircon CL spectrum, 20 keV e<sup>-</sup> beam, Torpy <i>et al.</i> 2020

Zircon CL spectrum, 20 keV e^- beam, Torpy et al. 2020

Description	CL spectrum of Zircon from the Tista River, Bangladesh
Reference	Torpy et al. 2020 Torpy, A., Wilson, N., MacRae, C., Pownceby, M., Biswas, P., Rahman, M., & Zaman, M. (2020). Deciphering the Complex Mineralogy of River Sand Deposits through Clustering and Quantification of Hyperspectral X-Ray Maps. Microscopy and Microanalysis, 26(4), 768-792 https://doi.org/10.1017/S143192762000135X
Date measured	2018-04-14
Material	Zircon [ ZrSiO₄ ] Zircon specimen from Alta, Finnmark, Norway © Photo by Penland, via Smithsonian National Museum of Natural History
Specimen	Tista 2020 D4 Shaker [CSIRO], Teesta River, Bangladesh Clustered phase map of river sands (D4 shaker), from the Tista River, Bangladesh. From Torpy et al. 2020 © (C) 2020 CSIRO Mineral Resources
Specimen temperature	Ambient
Technique	Cathodoluminescence (CL)
Instrument	JEOL 8500F
Probe	20 keV electron beam
Beam current	69.64 nA
Probe diameter	2 μm
Detector name	OceanOptics QEPRO
Det. technology	CCD, Si, Peltier cooled
Acquisition time	537.6 s
Channel count	1024
Energy range	1.27642 … 6.21094 eV
Intensity range	100 (normalised intensity)
Related measurement	Zircon EDS spectrum, 20 keV e^- beam, Torpy et al. 2020 (co-measured)
Lines	Dy³⁺ 2.57 eV (19.6%), 2.1504 eV (28.3%), Unspecified 4.078 eV (43.6069%), 2.916 eV (93%), 3.08153 eV (11%), 2.631 eV (22%), 2.3571 eV (6.6%)

Nominal composition of Zircon [ ZrSiO₄ ].
Element	Atoms	At%	Wt%
Zr	1	16.7	49.8
Si	1	16.7	15.3
O	4	66.7	34.9

CL spectrum of Zircon from the Tista River, Bangladesh