Phosphate minerals of some granitic rocks associated quartz veins from northern...

• Author(s): Neiva, A.M.R. ; Silva, M.M.V.G. ; Antunes, I.M.H.R. ; Ramos, J.M.F.
• Date: 2000
• Persistent ID: http://hdl.handle.net/10400.11/773
• Origin: Repositório Científico do Instituto Politécnico de Castelo Branco
• Subject(s): triphylite; vivianite; childrenite; eosphorite; brushite; phosphoferrite; ludlamite; mitridatite; strengite; perloffite; montebrasite; natromontebrasite; gormanite; mimetite; kintoreite
• Document Type: Article
• Language: English

Description

Phosphate minerals are common in northern and central Portuguese granitic rocks. Childrenite, eosphorite and intermediate compositions in this solid-solution séries occur in muscovite granites at Paredes da Beira and Penamacor-Monsanto, muscovite-biotite granites at Penamacor-Monsanto and in aplite veins at Vidago. The composition of childrenite and eosphorite are similar in each of these localities. Germanite occurs in a muscovite granite at Segura.