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

Apatite EDS spectrum, 20 keV e^- beam, Torpy et al. 2020

Measurement spectrum

Measurement details

Description	EDS spectrum of Apatite, 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	Apatite [ Ca₅(PO₄)₃(OH, F, Cl) ]
Analysis technique	Energy dispersive x-ray spectrometry (EDS)
Instrument	JEOL 8500F
Probe	20 keV electron beam
Beam current	69.95 nA
Probe diameter	2 μm
Detector name	2× Bruker XFLASH
Det. technology	Silicon drift detector (SDD)
Takeoff angle	40°
Max. throughput	260 kcounts/s
Real time	2682.66 s
Live time	1623.89 s
Dead time	39.4672 %
Channel count	4096
Energy range	-477.548 … 19994.5 eV
Gain	4.99928 eV/channel
Intensity range	8.879×10⁶ counts
Integral	5.9134×10⁸ counts
Related measurement	Apatite CL 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 Scheelite 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 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

Composition

Nominal composition of Apatite [ Ca₅(PO₄)₃(OH,F,Cl) ].
Element	Atoms	At%	Wt%
H	0.118	1.66	0.07
Ca	1.667	23.42	39.36
P	1	14.05	18.25
O	4.112	57.76	38.76
F	0.111	1.56	1.24
Cl	0.111	1.56	2.32

Apatite EDS spectrum, 20 keV e- beam, Torpy et al. 2020

Measurement spectrum

Measurement details

Specimen details

Specimen image

Composition

Apatite EDS spectrum, 20 keV e^- beam, Torpy et al. 2020