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European Journal of Mineralogy; November, December 2003; v. 15; no. 6; p. 1069-1077; DOI: 10.1127/0935-1221/2003/0015-1069
© 2003 E. Schweizerbart'sche Verlagsbuchhandlung Science Publishers
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Articles

The occurrence and origin of babingtonite in the El Valle-Boinás Cu-Au deposit in Asturias, Spain

Antonia CEPEDAL1,*, Dámaso MOREIRAS1, Agustín MARTÍN-IZARD1, Santiago GONZÁLEZ-NISTAL2 and Luis RODRÍGUEZ-PEVIDA2

1 Department of Geology, University of Oviedo, Arias de Velasco s/n, E-33005 Oviedo, Spain
2 Río Narcea Gold Mines, Avda. del Llaniello 13, E-33860 Salas, Asturias, Spain

* Corresponding author, e-mail: mcepedal{at}geol.uniovi.es

Babingtonite has been found at El Valle-Boinás Cu-Au deposit, Spain, this being the first known occurrence of this mineral in skarn in Spain. It is a locally abundant accessory mineral related to the hydrothermal alteration of the calcic skarn. Babingtonite is present in metasomatized aplitic dykes or occurs as a consequence of alteration of Fe-rich end members of both hedenbergite and andradite and always in association with Fe-rich epidote (Ps32–48). Other related minerals are calcite, quartz, hydroxyapophyllite, hydroandradite, prehnite, pumpellyite-(Fe+2), Cu-sulphides and electrum. The babingtonite formation is related to the locally Aldepleted aqueous fluids at relative high fO2 and low XCO2.

Key-words: babingtonite, skarn, gold, El Valle-Boinás, Spain.




This article has been cited by other articles:


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 Can MineralHome page
A. Cepedal, M. Fuertes-Fuente, A. Martin-Izard, S. Gonzalez-Nistal, and M. Barrero
GOLD-BEARING As-RICH PYRITE AND ARSENOPYRITE FROM THE EL VALLE GOLD DEPOSIT, ASTURIAS, NORTHWESTERN SPAIN
Can Mineral, February 1, 2008; 46(1): 233 - 247.
[Abstract] [Full Text] [PDF]


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