These veins exhibit a four-stage paragenesis: 1) early barren quartz filling, 2) arsenopyrite-pyrite with minor scheelite assemblage, 3) gold and base metal sulfides crystallized after a ductile/brittle deformation stage, and 4) pyrite-carbonate coeval with a late brittle stage. The gold-bearing quartz veins are hosted by N60☎ to N90☎ sinistral strike-slip faults. Our results favor of two-step hydrothermal event with an early deep-seated gold event followed by a late shallower Sb event. New structural data, mineralogical, textural and geochemical assays have been carried out to clarify the gold and Sb veins relationships. It shows gold-bearing quartz veins neighboring with a complex network of Sb veins, hosted in the Neoproterozoic metasedimentary basement of the Mauges Nappe. The La Bellière gold district, in the Ligerian domain of the Armorican Massif is the third one of France in term of production.
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