 | | Journal (article/letter/editorial) | | 1990 Le district/l antimoine-or Dfirico-Beirfio (Portugal): volution parag n tique et g ochimique; implications...Geologiada Universidade do Porto (INIC), Faculdadede Ci~ncias,4000 Porto, Portugal 2 C.N.R.S. URA 736 Universit6...process, in the different stages: with arsenopyrite-pyrite, or jamesonite, or berthieritestibnite I, or g...the Pb-Zn stage. La partie nord et centrale du Portugal renferme de nombreux gites d'or primaire, les...Jales (Tr/ts-os-Montes), off se trouve la seule mine d'or portugaise actuellement en activit6, dont la |  | | Journal (article/letter/editorial) | | quartz and antimonyâgold quartz veins from northern Portugal A.M.R. Neiva a,â, P. AndrĂĄĆĄ b, J.M.F. Ramos c...Sciences, University of Coimbra, 3000-272 Coimbra, Portugal Geological Institute, Slovak Academy of Sciences...Geological Institute, 4466-956 S. Mamede de Infesta, Portugal b A R T I C L E I N F O Article history: Received...compositions Ore genesis Bragança DĂșricoâBeirĂŁ Portugal Stibnite Berthierite A B S T R A C T Antimony-...PbâSb-quartz veins from the Bragança district, Portugal, are mainly hosted by Silurian phyllites. AntimonyâAu-quartz |  | Vallance, J, Cathelineau, M, Boiron, M.C, Fourcade, S, Shepherd, T.J, Naden, J (2003) Fluidârock interactions and the role of late Hercynian aplite intrusion in the genesis of the Castromil gold deposit, northern Portugal. Chemical Geology, 194 (1) 201-224 doi:10.1016/s0009-2541(02)00278-4 | Journal (article/letter/editorial) | | genesis of the Castromil gold deposit, northern Portugal J. Vallance a,b,*, M. Cathelineau a, M.C. Boiron...form 28 June 2002 Abstract Castromil (northern Portugal) is one of several important orogenic gold deposits...arenaceous and argillaceous metasediments of the Valongo Belt. Identification of the ore fluids and their...represents the main phase of quartz â arsenopyrite â pyrite deposition. The third stage of mineralisation (Stage...to faulting along a secondary anticline of the Valongo Belt controlled both aplite intrusion and subsequent |  | | Journal (article/letter/editorial) | | and graywacke complexor the BeirasFormation in Portugal. Most of the Iberian mesetais made up of Paleozoic...papers,notablyin Lotze (1950), example,the Ner6n mine in the SouthPortuguese Capdevilaet al. (1973), and...Julivertet al. (1974). zone and the Villarbac(âą mine in the West AsturianThe metallogenicaspectshave...discussed by Leonesezone. At present, the SanAntonio mine, in Arribas(1978). The mesetacanbe dividedinto five...occurrences in the discordant cover: the Santa Rufina mine, located in the upper Carboniferousin the provinceof |  | | Journal (article/letter/editorial) | | darĂŒber in dieser Zeitschr. 1902,86,79â81 referiert. Da die vorliegende Arbeit wesentliche ErgĂ€nzungen enthUlt...QuarzgĂ€ngen auf der Grube Fisga bei Gondomar unfern Porto mit gewissem Erfolg gewonnen. AuĂerdem im Sande...nennen. Auf der Grube Ribeiro da Igreja bei Vallongo (Porto) kommt er hier und da in ziemlich vollkommenen...nur vom Dorfe Paraiso bei Porto bekannt. Nun auch in QuarzgĂ€ngen zu Porto Arado im Gerez-Gebirge und...Heteromorphit. Auf den Gruben Montalto und Ribeiro da Igreja bei Vallongo. P y r i t . Neu sind WĂŒrfel |
|
