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Orada Mine, Pias, Serpa, Beja District, Portugal

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Name(s) in local language(s):Mina da Orada, Pias, Serpa, Distrito de Beja, Portugal

Fe mine. Closed in 1971.

Mining concessions:
No. CM27 Carvalhal (Fe), registered on 25-04-1935
No. 356 Herdade de João Teixeira (Fe), 25-02-1903
No. 328 Herdade da Igreja no. 2 (2. Orada) (Fe), 03-11-1900
No. 327 Herdade do Carvalhal (3. Orada) (Fe), 02-11-1900
No. 326 Herdade de João Teixeira (4. Orada) (Fe), 31-10-1900
No. 325 Herdade da Igreja no. 1 (5. Orada) (Fe), 30-10-1900
No. 207 Orada (Fe), 25-02-1888
No. 3378 info n/a (LNEG)

Tipos: Ocorrências de Ferro - ligadas a vulcanismo - estratiformes.
Ocorrências de Ferro - ligadas a vulcanismo - disseminadas.
Descrição: três massas lenticulares principais de magnetite, com alguns alguns sulfuretos, interestratificados em metavulcanitos básicos que repousam em discordância sobre uma série calcária câmbrica. Estas massas estendem-se por 6 km, têm extensões de 60 a 250 m e espessuras de 5 a 30 m e cupam o flanco noroeste de anticlinal orientado N-S e 20º E.
Mineralizações principais: magnetite (ferro magnético).
Morfologias: estratiforme, lenticular.
Rochas encaixantes: meta-vulcanitos básicos.
Geologia local: Complexo Vulcano-sedimentar de Ficalho. Granito de Pias - Pedrogão.
Geologia regional: Ordovícico - Silúrico(?). Granitos Hercínicos.

Mindat Articles

Portuguese Ossa-Morena Zone Mining by Martins da Pedra

Mineral List

11 valid minerals.

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CARVALHO, D. (1971a) - Minas da Orada, in Carvalho, D., Goinhas, J.A.C., e Schermerhorn, L.J.G., Principais jazigos minerais do Sul de Portugal: Livro-Guia da Excursão nº 4, I Congresso Hispano--Luso-Americano de Geologia Económica, Direcção-Geral de Minas e Serviços Geológicos, p. 84-89.

CARVALHO, D. (1971b) - Observações sobre os jazigos de ferro da área Pedrógão-Orada: I Congresso Hispano-luso-Americano de Geologia Económica, Ibérica, Madrid, Tomo 1, secção 4, p. 519-537.

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