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Nota sobre las mineralizaciones de wolframio de Oliva de la Frontera, Suroeste de Badajoz

Authors: Ruiz de Almodóvar, G.;

Nota sobre las mineralizaciones de wolframio de Oliva de la Frontera, Suroeste de Badajoz

Abstract

[Resumen] Las mineralizaciones de wolframio y sulfuros (Mo, Bi, Fe y Cu), ligadas a filones de cuarzo, de Oliva de la Frontera y Zahinos (Badajoz), tienen una posici6n geológica excepcional, pues se localizan en el flanco Sur del anticlinorio de Olivenza-Monesterio (zona de Ossa Morena), alejadas del límite Sur de la provincia metalo genética de Sn-W-Mo y Bi del Macizo Ibérico. Las rocas encajantes son esquistos y pizarras del Cámbrico superior y/o del Ordovícico inferior. Los filones, de dimensiones variables (1 cm a 2 m de potencia y hasta 200 m de longitud), están controlados tectónicamente por los planos de esquistosidad Si y por fracturas tardías N130 y N40. Las rocas encajantes están afectadas por alteraciones metasomáticas (turmalinizaci6n, moscovitización, silicificación, hematización, cloritización y carbonatación), estrechamente relacionadas entre sí, y que dan lugar a zonaciones irregulares a escala del afloramiento. Se diferencian cuatro fases mineralogenéticas, las tres primeras, de origen neurnatolíticohidrotermal, están precedidas por sendas etapas de fracturación, la última es de origen supergénico. La mineralogía más significativa, según secuencia aproximada de formación, es la siguiente: dravita ferrífera, magnetita, topacio, monacita, fluorapatito, rutilo, pirita, scheelita, molibdenita, bismutinita, calcopirita, tetraedrita, siderita, hematites, goethita, pirolusita, anatasa, covellina, calcosina y bismutita. Las mineralizaciones se originaron a partir de un fluido postmagmático, posiblemente relacionado con diferencia dos graníticos, y con un importante concurso de las rocas encajantes.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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