Geossítios
GEO

Roman Slag Heaps of Aljustrel

justificação do valor científico

During Roman times the Algares and São João orebodies were mined through small open pits, shafts and galleries, the former to a depth of 118 m. The intense extractive activity of the Vipasca mine generated very large slag heaps at Aljustrel, near the valley of the Feitais creek. The Roman slag is partially covered by modern slag. Recent mapping by LNEG identified Roman slag over a total area of 79809 m2 (Matos et al 2008). Roman slag heaps contain minerals with scientific interest. The Feitais area is a case study for environmental recovery by EDM (Martins e Carvalho 2005).
The Roman slag heaps constitute a geosite of Iberian dimension in the context of the Iberian Pyrite Belt. Archaeologically, the Roman slag heaps are very important because they bear evidence on the Roman technology for processing sulphide ores (Macias et al. 2008). The copper cementation tanks, recently recovered by EDM, lie nearby and will benefit from proximity. Access is controlled by the mining company.

References:
Macias, J.A.P., Matos, J.X., Martins, A. (2008) Los Scavrarii de Vipasca. V Cong. Int. SEDPGYM Minería y Metalurgia Históricas SW Europeo, León, Spain, pp. 34.
Martins, J., Carvalho, P. (2005) – Recuperação ambiental da área mineira de Aljustrel. Abst. III Enc. Com. Mineiras Aljustrel, CM Aljustrel.
Matos, JX, Martins, A, Rego, M, Mateus, A, Pinto, A, Figueiras, J, Silva, E. (2008). Roman slag mine wastes distribution in the Portuguese sector of the Iberian Pyrite Belt. V Cong. Int. SEDPGYM Minería y Metalurgia Históricas SW Europeo, León, Spain, pp. 45Matos, J.X. (2004) – Carta geológica e mineira da Mina de São Domingos esc. 1/5000, IGM

Outros valores e sua justificação

Environmental impact on mining areas. The Aljustrel Roman slag heaps belong to the geo/eco-mining circuit produced by LNEG, by the Aljustrel municipality and CCDR Alentejo.

Observações

Coordenadas em actualização.