SYN- TO LATE-TECTONIC STOCKWORK EMPLACEMENT WITHIN THE SPANISH SECTION OF THE IBERIAN PYRITE BELT: STRUCTURAL, TEXTURAL, AND MINERALOGICAL CONSTRAINTS IN THE THARSIS AND LA ZARZA AREAS

摘要: In deformed massive sulfide deposits, it is commonly difficult to distinguish between primary stockwork mineralization and remobilized sulfides that occupy late cleavages deformation structures, the mechanism of formation veins not always clear. An analysis vein networks associated with two deposits Iberian Pyrite Belt presented as an example this complexity. Variscan has affected sulfide-related stockworks at La Zarza Tharsis led sulfide-bearing veins. The feeder a complex mineralogical composition pyrite-rich rimmed by narrow Co-As assemblages (e.g., cobaltite arsenopyrite). Interstitial galena, chalcopyrite, sphalerite minerals are also observed. set developed during was emplaced within cleavage shear planes characteristic regional south-verging tectonics. Away from sulfides, syntectonic pyrite quartz. However, in contact have Co-As–rich rims base metal similar development paragenesis zones explained terms regional-scale models.