Nota sobre la presencia de mineralizaciones de barita al sur de Llerena (Badajoz, España)
Barite mineralizations occur within Lower Cambrian detrital-carbonatic materials in the Zafra-Monesterio sector (Ossa-Morena zone, Iberian Massif), mainly associated to shales containing siliceous limestones layers. Four types of mineralization can be differentiated: 1) disseminate barite in carbona...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 1988 |
| País: | España |
| Institución: | Universidad de Sevilla (US) |
| Repositorio: | idUS. Depósito de Investigación de la Universidad de Sevilla |
| OAI Identifier: | oai:idus.us.es:11441/93823 |
| Acceso en línea: | https://hdl.handle.net/11441/93823 |
| Access Level: | acceso abierto |
| Palabra clave: | Stratiform and vein barite Iberian Massif Spain Barita estratiforme barita filoniana zona Ossa-Morena España |
| Sumario: | Barite mineralizations occur within Lower Cambrian detrital-carbonatic materials in the Zafra-Monesterio sector (Ossa-Morena zone, Iberian Massif), mainly associated to shales containing siliceous limestones layers. Four types of mineralization can be differentiated: 1) disseminate barite in carbonatic rocks, 2) centimetric concretions, 3) stratiform bodies of up 50 m long and <2 m thick, and 4) veins which are filling post-Hercynian fractures. According to the geological setting, and morphological, mineralogical and chemical characteristics a sedimentary and/or diagenetic origin may be supposed for stratiform barite deposits. Barite recrystallization took place during Hercynian deformation. Later barite was remobilized and concentrated in post-Hercynian fractures. Stratiform mineralizations described above can be considered of a commercial interest because occurrences are very abundant in this area, and grades are many times richer than 90% of BaS04with only silica as the major impurity. |
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