par Dejonghe, Léon 
Référence Chronique de la recherche minière, 494, page (25-41)
Publication Publié, 1989
Référence Chronique de la recherche minière, 494, page (25-41)
Publication Publié, 1989
Article révisé par les pairs
| Résumé : | This note describes the Fleurus ore deposit at outcrop scale and the main macroscopic ore textures. The deposit consists essentially of barite. The deposit is lensshaped, about 350m long and 130m wide, has a maximum thickness of 25m and is trapped in a paleokarstic cavity in the Visean limestone. The bottom of the cavity is filled with an Early Cretaceous complex of black continental deposits (Albian or perhaps Aptian and Albian-Wealden facies) which are also mineralized. The presence of paleochannels and barren intervals in the baritic lens indicates that mineral concentration was contemporaneous with sedimentation in the paleodolina. This most likely genetic interpretation is that of precipitation at the interface between two aquifers containing waters of different compositions. The sulfatic waters from the Visean aquifer emerging through springs would have encountered the chlorinated and baritic waters of the eroded Silesian. -from English summary |
