Gagarinite-(Y) CL/SEM spectrum, e<sup>-</sup> beam, CSIRO 2011

Gagarinite-(Y) CL/SEM spectrum, e^- beam, CSIRO 2011

Description	CL/SEM spectrum of Gagarinite-(Y)
Reference	Otherwise unpublished luminescence spectra measured by the CSIRO Mineral Resources Microbeam Laboratory, Clayton https://research.csiro.au/microbeam-lab/
Material	Gagarinite-(Y) [ NaCaYF₆ ] Brick-red sample of gagarinite-(Y), showing crystalline shape, embeded in cryolite and sugar fluoraluminates like thomsenolite or gearksutite, from Katugin, Chitinskaya Oblast', Transbaikalia, Eastern Siberia, Russian Federation Photo by Joan Rosell, from rosellminerals.com, CC-BY-SA 4.0
Specimen temperature	Ambient
Analysis technique	Cathodoluminescence (CL), using an Electron Probe Micro-Analyser (EPMA)
Instrument	JEOL 8500F
Probe	Electron beam
Channel count	1024
Wavelength range	198.557 … 982.656 nm
Intensity range	-62 … 1.317×10⁴ counts
Integral	982569 counts
Lines	Dy³⁺ 2.1663 eV (100%), 2.576 eV (52.3%) La³⁺ 3.2437 eV (8.1%) Nd³⁺ 1.3847 eV (6%), 1.4357 eV (6.8%) REE³⁺ 1.9217 eV (24.8%), 1.8842 eV (20.6%), 2.2879 eV (32.7%), 3.029 eV (15.1%) Unspecified 1.6526 eV (8.7%)

Nominal composition of Gagarinite-(Y) [ NaCaYF₆ ].
Element	Atoms	At%	Wt%
Na	1	11.1	8.64
Ca	1	11.1	15.1
Y	1	11.1	33.4
F	6	66.7	42.9
Total	9	100	100

Plot of CL/SEM spectrum of Gagarinite-(Y)