
handle: 10261/391142
[ES] En este trabajo se ha realizado un estudio geológico, mineralógico y químico del skarn de Monleón. Está situado en la localidad de Monleón, a unos 50 km al sur de Salamanca, en la Zona Centroibérica (ZCI) del Macizo Ibérico. El depósito, cuyo afloramiento es de dimensiones reducidas, presenta una morfología controlada por fracturas de dirección NO-SE y las conjugadas, que permiten dividirlo el en tres sectores. En el sector este, el exoskarn progrado se desarrolla sobre niveles carbonatados y calcosilicatados y está constituido por hedenbergita (Hd82-83), grosularia (Gr68-90) y scheelita (I). El endoskarn se ha originado sobre un leucogranito de grano fino y está formado por plagioclasa, clinopiroxeno y grosularia (Gr63-67). Las asociaciones minerales que se formaron durante el enfriamiento del sistema son complejas y están constituidas por granate subcálcico, otros silicatos hidratados (anfíbol, minerales el grupo de la epidota, clorita, mica blanca y zeolita), scheelita (II) y sulfuros de Fe y Cu. El skarn de scheelita de Monleón presenta características mineralógicas y químicas comunes con otros skarns de wolframio de la ZCI, como el skarn cálcico y reducido de scheelita de Los Santos.
[EN] In this work, a geological, mineralogical and chemical study of the Monleón skarn has been carried out. It is located in the town of Monleón, about 50 km south of Salamanca, in the Central Iberian Zone (ZCI) of the Iberian Massif. The deposit, whose outcrop are small, displays a geometry controlled by NW-SEtrending faults and conjugates faults, which allow divides the skarn deposit in three areas. In the eastern sector, the prograde exoskarn is developed in carbonate and calc-silicate levels and consists of hedenbergite (Hd82-83), grossular (Gr68-90), and scheelite (I). The endoskarn is developed in a fine-grained leucogranite and consists of calcic plagioclase, clinopyroxene and grossular (Gr63-67). The mineral associations formed during the cooling of the system are complex and consist of subcalcic garnet, other hydrated silicates (amphibole, epidote group minerals, chlorite, white mica and zeolite), scheelite (II) and Fe and Cu sulphides. The Monleón scheelite skarn shows mineralogical and chemical features in common with other tungsten skarns in the ZCI, such as the calcic and reduced scheelite skarn at Los Santos.
Agradecimientos a l Proyecto de Investigación “Cartografía geológica-minera a escala 1:5.000 del borde N del batolito de Los Santos-Valdelacasa” (LI99). Univ. de Salamanca-Daytal Resources Spain, S.L.
Presentado en el XI Congreso Geológico de España (Ávila, 2-6 de julio de 2024).
Peer reviewed
Provincia Salamanca, Scheelita, Monleón, Skarn, Mineralogía
Provincia Salamanca, Scheelita, Monleón, Skarn, Mineralogía
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