Fluorite measurement, Mariano & Ring 1975

Reference	Mariano & Ring 1975 Mariano A. N. & Ring P. J. (1975). Europium-activated cathodoluminescence in minerals. Geochimica et Cosmochimica Acta, 39(5), 649-660. DOI: https://doi.org/10.1016/0016-7037(75)90008-3
Material	Fluorite [ CaF₂ ] Specimen of fluorite, from Minerva mine, Cave-in-Rock, Hardin Co., Illinois, USA. Specimen M 52847, Museums Victoria. © Photo by Rodney Start, Copyright Museums Victoria / CC BY (Licensed as Attribution 4.0 International)
Specimen temperature	Ambient
Technique	Unknown
Line	Eu²⁺ 435 nm

Nominal composition of Fluorite [ CaF₂ ].
Element	Atoms	At%	Wt%
Ca	1	33.3	51.3
F	2	66.7	48.7