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The abandoned Regoufe mine is situated in Northern Portugal, in the Arouca Geopark. It was exploited for tungsten by underground mining till the 1970s. The tailings were deposited on the ground. The mine was abandoned without any environmental remediation. Mineralization occur in quartz veins, and consists of wolframite, cassiterite, and several sulfides (arsenopyrite, pyrite, sphalerite), bismuthinite and native bismuth (Bi). The present study aims to characterize the acid mine drainages (AMD) and superficial wat...

Sites that arise after mining in our country are mostly unique habitats and should be dealt adequately. This fact is valid in particular for smaller sites of mining and mineral extraction. However, the restoration should not rely just on spontaneous succession. If there in the area are developing or is there a prerequisite of development of plant communities with important species (refuge, hot spots), it is always necessary to support the development of desirable successional stages, and, vice versa eliminate inva...