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

Zoisite CL spectrum, 20 keV e^- beam, Rahman et al. 2020

Description	CL spectrum of Zoisite from Cox's Bazar, Bangladesh
Reference	Rahman et al. 2020 Rahman M. A., Tardio J., Bhargava S., Zaman M. N., Mehedi Hasan A. S. M., Torpy A. & Pownceby M. (2020). Comparison of the chemistry and mineralogy of ilmenite concentrates sourced from fluvial (Brahmaputra River) and beach placer (Cox's Bazar) deposits, Bangladesh., 117, 1-10. DOI: https://doi.org/10.1016/j.oregeorev.2019.103271
Date measured	2015-03-06
Material	Zoisite [ Ca₂Al₃[Si₂O₇][SiO₄]O(OH) ] Zoisite specimens from Tanzania © Photo by Greg Polley, via Smithsonian National Museum of Natural History
Specimen	CB Garnet con [CSIRO], Cox's Bazar District, Chattogram Division, Bangladesh
Technique	Cathodoluminescence (CL)
Instrument	JEOL 8500F
Probe	20 keV electron beam
Beam current	59.65 nA
Probe diameter	2 μm
Detector name	QE65000
Acquisition time	17.723 s
Channel count	1024
Energy range	1.26182 … 6.25464 eV
Intensity range	5.29897 … 90.7204 (normalised intensity)
Data filter	Savitzky-Golay, 2^nd order, ±20 channels

Nominal composition of Zoisite [ Ca₂Al₃[Si₂O₇][SiO₄]O(OH) ].
Element	Atoms	At%	Wt%
Ca	2	9.09	17.6
Al	3	13.6	17.8
Si	3	13.6	18.5
O	13	59.1	45.8
H	1	4.55	0.222

CL spectrum of Zoisite from Cox's Bazar, Bangladesh