Preguiça Mine

Sobral da Adiça, Moura, Beja, Portugal

Mina da Preguiça, Sobral da Adiça, Distrito de Beja, Portugal

Key Information

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The Preguiça Mine is located in Sobral da Adiça, Moura, Beja, Portugal, in the Alentejo region near Spain.
It is known for minerals like descloizite, willemita, and calcite, with descloizite being particularly notable.
The mine's geological structure involves Cambrian dolomites with some volcanic influences, forming iron, zinc, and lead deposits.
It was active from around 1914 to the 1960s, with limited details on operators.
The area features cultural landmarks like Moura's castle and Gruta da Adiça's prehistoric art, with a Mediterranean climate and oak-rich ecology.

Geographic Location

The Preguiça Mine sits in Sobral da Adiça, part of Moura in the Beja district, southern Portugal's Alentejo region. This area, near the Spanish border, is known for its rolling hills and agricultural landscapes, offering a scenic backdrop for mineral exploration.

Minerals Produced

The mine is famous for its iron, zinc, and lead deposits, with standout minerals including descloizite, known for its beautiful crystals, and willemita, a zinc silicate. These minerals attract collectors due to their unique occurrences and aesthetic appeal.

Geological Structure

Research suggests the mine is part of the Moura-Ficalho anticline, featuring Cambrian dolomites with volcanic components. This structure supports both surface iron caps and deeper zinc-lead mineralizations, providing insight into the formation processes of its minerals.

Mining History

It seems likely that the mine operated from approximately 1914 to the 1960s, part of a larger mining field with multiple concessions. Details on specific operators are scarce, but it was a significant site during its active years.

Local Culture and Characteristics

Moura boasts a historic castle and a large solar power station, blending history with modernity. The Gruta da Adiça cave in Sobral da Adiça features prehistoric art, adding cultural depth. The region is also noted for its wine production, enhancing its cultural appeal.

Climate and Ecology

The area has a Mediterranean climate, with hot, dry summers and mild, rainy winters. The ecology includes cork oak, olive trees, and agricultural lands, which complements the mineral-rich environment and influences mineral formation conditions.