Barita de neoformación en la Arenisca de Villamayor (Salamanca)estudio preliminar

1. Alonso-Gavilán, G. ¹
2. Moro, M.C. ¹
3. Cembranos, M.L. ¹
4. Areas, A. ²

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Resumen

The barite studied in the Villamayor sandstone is located in old rhizoliths related to subvertical fractures which affect these subarcosic deposits. These zones are actually in great circulation within underground waters and fuIl of clay materials. The mineral' s form together with ist mineralogical, chemical and isotopic characteristics suggests that its formation is related with the postneogene alteration processes (caolinitization) of sandstones which libera te Ba of the feldspars and with the infiltration and circulation of metheoric waters that contain dissolved sulphates.

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