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

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

Description	CL spectrum of Quartz 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	Quartz [ SiO₂ ] Rutilated quartz specimen, from Ibitiara, Bahia, Northeast Region, Brazil. Size: 6.6 x 5.5 x 5.1 cm. © Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
Specimen	Tista 2020 D4 Zircon conc [CSIRO], Teesta River, Bangladesh Image of a specimen of Zircon from Tista River, Bangladesh © (C) 2020 CSIRO Mineral Resources
Technique	Cathodoluminescence (CL)
Instrument	JEOL 8500F
Probe	20 keV electron beam
Beam current	69.95 nA
Probe diameter	2 μm
Acquisition time	163.653 s
Channel count	1024
Wavelength range	348.233 … 730.123 nm
Intensity range	-119.313 … 264530 counts
Integral	1.4151×10⁸ counts
Related measurement	Quartz EDS spectrum, 20 keV e^- beam, Torpy et al. 2020 (co-measured)

Nominal composition of Quartz [ SiO₂ ].
Element	Atoms	At%	Wt%
Si	1	33.3	46.7
O	2	66.7	53.3