Faculdade de Ciências da Universidade do Porto
Geociências, Ambiente e Ordenamento do Território
Fregeneda-Almendra aplite-pegmatite field is located in the Portuguese border of the International Douro region. The field is located in an East-West metasedimentary unit of the Xisto-Grauváquico Complex and follows the north flank of the... more
- by Romeu Vieira
In the Fregeneda-Almendra area, (Spain and Portugal), several pegmatite bodies occur. Li-bearing pegmatites are common in the northernmost part of the area, where they can be classified in four groups: (a) petalite-bearing pegmatites; (b)... more
- by Romeu Vieira
Sojitz Beralt Tin & Wolfram (Portugal) S.A. (SBT&W) is wholly owned by the Japanese Sojitz Corporation and is the oldest Portuguese mining Company. Panasqueira mine also is one of the largest operating tungsten mines in the Market Economy... more
- by Romeu Vieira
Dozens of aplitic-pegmatite veins are exposed in the Barroso-Alvao pegmatite-aplite field. Poorly mineralized veins as well as geochemically evolved veins with Li-rich minerals and low-grade cassiterite mineralization have been found.... more
- by Romeu Vieira
Phosphates are widespread accessory minerals in pegmatites from the Central Iberian Zone (CIZ) (Spain and Portugal); in some of them forming part of the main paragenesis. In addition, phosphates may occur as accessory phases in granitic... more
- by Romeu Vieira
Rare-element granites and pegmatites represent important sources of raw materials for “clean, green and high technologies”, such as lithium and tantalum, for example. However, mechanisms of rare-element granites and pegmatite’s origin are... more