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

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

Measurement spectrum

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Measurement details

Description	CL spectrum of Scheelite 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	2018-05-07
Material	Scheelite [ CaWO₄ ]
Analysis technique	Cathodoluminescence (CL)
Instrument	JEOL 8500F
Probe	20 keV electron beam
Beam current	69.95 nA
Probe diameter	2 μm
Acquisition time	1.78134 s
Channel count	1024
Wavelength range	348.233 … 730.123 nm
Intensity range	-19.9 … 7.873×10⁵ counts
Integral	2.8824×10⁸ counts
Related measurement	Scheelite EDS spectrum, 20 keV e^- beam, Torpy et al. 2020 (co-measured)

Specimen details

Name	Tista 2020 D4 Zircon conc
Owner	CSIRO
Locality	Teesta River, Bangladesh
Type	Mineral concentrate
Form	Polished section, epoxy mount
Other measurements	CL Apatite CL spectrum, 20 keV e^- beam, Torpy et al. 2020 Florencite-(Ce) CL spectrum, 20 keV e^- beam, Torpy et al. 2020 Kyanite CL spectrum, 20 keV e^- beam, Torpy et al. 2020 Muscovite CL spectrum, 20 keV e^- beam, Torpy et al. 2020 Plagioclase CL spectrum, 20 keV e^- beam, Torpy et al. 2020 Plagioclase CL spectrum, 20 keV e^- beam, Torpy et al. 2020 Quartz CL spectrum, 20 keV e^- beam, Torpy et al. 2020 Titanite CL spectrum, 20 keV e^- beam, Torpy et al. 2020 Zircon CL spectrum, 20 keV e^- beam, Torpy et al. 2020 EDS Albite EDS spectrum, 20 keV e^- beam, Torpy et al. 2020 Apatite EDS spectrum, 20 keV e^- beam, Torpy et al. 2020 Biotite EDS spectrum, 20 keV e^- beam, Torpy et al. 2020 Florencite-(Ce) EDS spectrum, 20 keV e^- beam, Torpy et al. 2020 Ilmenite EDS spectrum, 20 keV e^- beam, Torpy et al. 2020 K feldspar EDS spectrum, 20 keV e^- beam, Torpy et al. 2020 Kyanite EDS spectrum, 20 keV e^- beam, Torpy et al. 2020 Monazite-(Ce) EDS spectrum, 20 keV e^- beam, Torpy et al. 2020 Muscovite EDS spectrum, 20 keV e^- beam, Torpy et al. 2020 Plagioclase EDS spectrum, 20 keV e^- beam, Torpy et al. 2020 Plagioclase EDS spectrum, 20 keV e^- beam, Torpy et al. 2020 Quartz EDS spectrum, 20 keV e^- beam, Torpy et al. 2020 Rutile EDS spectrum, 20 keV e^- beam, Torpy et al. 2020 Scheelite EDS spectrum, 20 keV e^- beam, Torpy et al. 2020 Titanite EDS spectrum, 20 keV e^- beam, Torpy et al. 2020 Zircon EDS spectrum, 20 keV e^- beam, Torpy et al. 2020 Zoisite EDS spectrum, 20 keV e^- beam, Torpy et al. 2020

Specimen image

Image of a specimen of Zircon from Tista River, Bangladesh

© (C) 2020 CSIRO Mineral Resources

Composition

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