Carbonatitic dykes that crop out in the central western part of Fuerteventura Basal Complex (Ajuy, Punta de la Nao), were affected by the Miocene intrusive event responsible for contact metamorphism and partial melting of part of the alkaline-carbonatitic complex. Textural characteristics, monazite enriched in LREE (La, Ce, Nd) formation processes in microfractures that affect zircon crystals, show carbonatite interactions with hydrothermal fluids and partial REE remobilization. Pyrochlore is the main mineral carrier of rare earth elements (sum REE=216694 ppm), with high LREE (LaN=185816 and CeN=165209) with respect to HREE (YbN=2589 and LuN=1814) with a rather steep pattern (La/Yb)N=72 in REE diagram. The mineral paragenesis represented by the interstratified illite/smectite, chlorite and vermiculite allows to frame the hydrothermal event in zeolite facies (T° ≈ 100-200 °C).

Carnevale G., Arroyo Rey X., Correale A., Rotolo S.G. (2021). Procesos hidrotermales con enriquecimiento en REE en las carbonatitas de Fuerteventura: evidencias en minerales accesorios. GEOGACETA, 69, 23-26.

Procesos hidrotermales con enriquecimiento en REE en las carbonatitas de Fuerteventura: evidencias en minerales accesorios

Carnevale G.
;
Correale A.;Rotolo S. G.
2021-01-01

Abstract

Carbonatitic dykes that crop out in the central western part of Fuerteventura Basal Complex (Ajuy, Punta de la Nao), were affected by the Miocene intrusive event responsible for contact metamorphism and partial melting of part of the alkaline-carbonatitic complex. Textural characteristics, monazite enriched in LREE (La, Ce, Nd) formation processes in microfractures that affect zircon crystals, show carbonatite interactions with hydrothermal fluids and partial REE remobilization. Pyrochlore is the main mineral carrier of rare earth elements (sum REE=216694 ppm), with high LREE (LaN=185816 and CeN=165209) with respect to HREE (YbN=2589 and LuN=1814) with a rather steep pattern (La/Yb)N=72 in REE diagram. The mineral paragenesis represented by the interstratified illite/smectite, chlorite and vermiculite allows to frame the hydrothermal event in zeolite facies (T° ≈ 100-200 °C).
2021
Settore GEO/07 - Petrologia E Petrografia
Carnevale G., Arroyo Rey X., Correale A., Rotolo S.G. (2021). Procesos hidrotermales con enriquecimiento en REE en las carbonatitas de Fuerteventura: evidencias en minerales accesorios. GEOGACETA, 69, 23-26.
File in questo prodotto:
File Dimensione Formato  
Procesos hidrotermales (in press).pdf

Solo gestori archvio

Tipologia: Versione Editoriale
Dimensione 1.27 MB
Formato Adobe PDF
1.27 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/497848
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact