Please use this identifier to cite or link to this item:
|Title: ||Evaluation of the mining potential of the São Domingos mine wastes, Iberian Pyrite Belt, Portugal|
|Authors: ||Vieira, Alexandre|
|Editors: ||Geológicas, Comunicações|
|Keywords: ||São Domingos mine|
mining wastes resources
Iberian Pyrite Belt
|Issue Date: ||3-Dec-2020|
|Publisher: ||LNEG, – Laboratório Nacional de Energia e Geologia IP|
|Citation: ||Vieira, A.; Matos, J.; Lopes, L., Martins, R. 2020. Evaluation of the mining potential of the São Domingos mine wastes, Iberian Pyrite Belt, Portugal. Comunicações Geológicas (2020) 107, III, 91-100 ISSN: 0873-948X; e-ISSN: 1647-581X. https://www.lneg.pt/wp-content/uploads/2020/07/Volume_107_III.pdf|
|Abstract: ||Abstract: The outcropping São Domingos Iberian Pyrite Belt deposit was mined since Roman time and between 1857 and 1966. The mine is formed by a 120 m depth flooded open pit and galleries until 420 m depth. Associated with felsic volcanic rocks and black shales of the Volcano-Sedimentary Complex, the deposit is formed by massive sulphide and stockwork ore (py, ccp, sp, ga, tt, apy) and related supergene enrichment ore (hematite gossan and covellite/chalcocite). Different mine wastes classes were mapped: gossan, felsic volcanic and shales, shales and landfill. Considering the CONASA mining waste characterization (162 shafts and 160 reverse circulation boreholes/LNEG database), new inferred resources are presented, using block modelling software: 2.38 Mt @ 0.77 g/t Au and 8.26 g/t Ag in non-conditioned volumes. Considering all evaluated wastes, including urban areas, an inferred resource of 4.0 Mt @ 0.64 g/t Au and 7.30 g/t Ag is presented, corresponding to a metal content of 82,878 oz t Au and 955,753 oz t Ag.
Keywords: São Domingos mine, mining wastes resources, Iberian Pyrite Belt.|
|Appears in Collections:||GEO - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.