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TitreFluorite and its potential as an indicator mineral for carbonatite-related rare earth element deposits
AuteurMakin, S A; Simandl, G J; Marshall, D
SourceBritish Columbia Ministry of Energy, Mines and Petroleum Resources, Paper no. 2014-1, 2013 p. 207-212 (Accès ouvert)
LiensOnline - En ligne
Séries alt.Secteur des sciences de la Terre, Contribution externe 20120514
ÉditeurBritish Columbia Ministry of Energy, Mines and Natural Gas
Documentpublication en série
Mediapapier; en ligne; numérique
Sujetséléments d'indice; fluorite; exploration; minéraux
ProgrammeÉtude des gîtes des métaux rares, Initiative géoscientifique ciblée (IGC-4)
Résumé(disponible en anglais seulement)
Fluorite has potential as a proximal indicator mineral for the exploration of specialty metals, particularly rare earth elements and Nb in carbonatiterelated deposits. Plots of Tb/La - Tb/Ca were generated using all available published data (worldwide) to compare REE concentrations in fluorite from carbonatite, peralkaline-alkaline, Mississippi Valley Type (MVT), and vein (sedimentary, igneous, and metamorphic hosted) deposits. Y-Yb plots distinguish between fl uorites from carbonatite and MVT deposits. Fluorite from carbonatite-related and MVT deposits form compositional fields with minor overlap. Ongoing investigations include: microchemical analyses of fluorites from key Canadian and foreign deposits, diagram refinement by contouring, the production of probability plots, and experimentation with discrimination diagrams incorporating normalized REE slope calculations with the presence or absence of Ce and Eu anomalies.