 | | Journal (article/letter/editorial) | | Supergene gold enrichment in the Castromil-Serra da Quinta gold deposit, NW Portugal C. CRUZ1,2,*, F. NORONHA2...the University of Porto, Portugal Institute of Earth Sciences â Porto Pole, Portugal Medgold Resources...Resources Corp, Portugal Department of Earth, Ocean and Atmospheric Sciences, University of British Columbia...metasediments occur in the northwestern part of Portugal. Most of these deposits were mined by the Romans...II AD) as open pits and surface galleries. The Castromil-Serra da Quinta gold deposit is an important example |  | 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) | | intrusion in the genesis of the Castromil gold deposit, northern Portugal J. Vallance a,b,*, M. Cathelineau...revised form 28 June 2002 Abstract Castromil (northern Portugal) is one of several important orogenic...fluids and represents the main phase of quartz â arsenopyrite â pyrite deposition. The third stage of mineralisation...to be the main cause of fluid circulation at Castromil. Evidence suggests that contact zones related...mineralisation; P â T conditions; Graphitic schists; Aplite; Portugal 1. Introduction In northwest Iberia, gold deposits |  | | Journal (article/letter/editorial) | | Goldâquartz veins contain a c. 20 cm pyrrhotiteâarsenopyriteâbiotite+ diopsidebanded alteration zone in areas...(+ argentiferous galena), bournonite, pyrite, arsenopyrite, and chalcopyrite+ sphalerite + pyrostilpnite-pyragarite...orogenic gold mineralisation in the castromil prospect, Northwest Portugal Cameron L. Hooper1*, Gawen R.T...UK (ch287@le.ac.uk) 2 Medgold Resources Corp, Portugal In NW Iberia, orogenic gold mineralisation occurs...2000). In the case of the Castromil prospect located East of Porto, Portugal, the Castello de Paiva granite |  | | Book | | MINERAL RESOURCES OF PORTUGAL Text prepared by LuĂs PlĂĄcido Martins CONTENTS 5 7 11 19 20 21...MINING BACKGROUND HISTORICAL OVERVIEW OF MINING IN PORTUGAL PRECIOUS METALS Galicia - TrĂĄs-os-Montes Zone...Business in Portugal KEY REFERENCES 3 PREAMBLE A complex and diversified geology endows Portugal with a...ornamental stones and some other mineral substances. Portugal is presently one of the main UE producers of copper...sulphide deposits like Neves-Corvo and Aljustrel, in Portugal, Rio Tinto, Sotiel, Los Frailes, Las Cruces, etc |  | | Journal (article/letter/editorial) | | Orogenic gold mineralisation in northwest Iberia, Portugal: role of meta-sediment source as a control on...(ajda1@student.le.ac.uk) 2 Medgold Resources Corp, Portugal Castromil and Serra da Quinta are two orogenic gold...gold deposits located in northwest Portugal, along the eastern ïŹank of the NW trending Valongo anticline...granite (Vallance et al. 2003). Collectively, the Castromil and Serra da Quinta deposits comprise the Lagares...of gold. The mineral assemblage is pyrite and arsenopyrite with lesser galena, sphalerite and pyrrhotite |  | | Journal (article/letter/editorial) | | Orogenic gold mineralisation in northwest Iberia, Portugal: role of meta-sediment source as a control on...(ajda1@student.le.ac.uk) 2 Medgold Resources Corp, Portugal Castromil and Serra da Quinta are two orogenic gold...gold deposits located in northwest Portugal, along the eastern ïŹank of the NW trending Valongo anticline...granite (Vallance et al. 2003). Collectively, the Castromil and Serra da Quinta deposits comprise the Lagares...of gold. The mineral assemblage is pyrite and arsenopyrite with lesser galena, sphalerite and pyrrhotite |  | de Oliveira, D. P. S., Robb, L. J., Inverno, C. M. C., Charlesworth, E. G. (2007) Metallogenesis of the SĂŁo Martinho and Mosteiros Gold Deposits, Tomar Cordoba Shear Zone, Portugal. International Geology Review, 49 (10) 907-930 doi:10.2747/0020-6814.49.10.907 | Journal (article/letter/editorial) | | Mosteiros Gold Deposits, Tomar Cordoba Shear Zone, Portugal a a b D. P. S. de Oliveira , L. J. Robb , C...Mosteiros Gold Deposits, Tomar Cordoba Shear Zone, Portugal, International Geology Review, 49:10, 907-930...Mosteiros Gold Deposits, Tomar Cordoba Shear Zone, Portugal D. P. S. DE OLIVEIRA,1 L. J. ROBB, Economic Geology...Mineiro, Apartado 7586, 2721-866 Alfragide (Lisbon), Portugal and CREMINER, Faculdade CiĂȘncias, Univ. Lisboa...Lisboa, EdifĂcio C6, Campo Grande, 1749-016 Lisboa, Portugal AND E. G. CHARLESWORTH School of Geosciences |  | | 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 | | | Journal (article/letter/editorial) | | the Neves-Corvo deposit, Iberian Pyrite Belt, Portugalâ (Carvalho et al., 2018) which was the keynote...magmatic-hydrothermal system of Borralha, northern Portugalâ, Bobos et al. (2018) show how chlorite compositions...âSupergene gold enrichment in the Castromil-Serra da Quinta gold deposit, NW Portugalâ (Cruz et al., 2018) shows...miners. Early-formed gold in primary sulfides (arsenopyrite and pyrite) contains 15â40 wt.% Ag whilst later...magmatic-hydrothermal system of Borralha, northern Portugal. Mineralogical Magazine, 82, xxxâyyy. Bowles |  | | Report (issue) | | Zeegers Empresa de Desenvolvimento Mineiro, Lisbon, Portugal J Damiao R Pinheiro Geological Survey of Ireland...Iberia-Massif Central zone of the Variscides 60 Banjas (Portugal): a turbidite-hosted gold deposit 62 Nature of...Celina 133 Carballino 134 Alto de Pozas, Tomii'io Castromil 136 81 Metallogenic models and exploration criteria...n and Saxothuringian-northern Brittany- South Portugal zones 60 Tectonic units of the Armorican Massif...after an early stage dominated by pyrite and arsenopyrite. The grade-tonnage profiles for the various |  | | Journal (article/letter/editorial) | | close to an old Sn-W mine, Ribeira, Northeast Portugal M. Manuela Vinha G. Silva a,â , SĂ©rgio P. Lopes...Universidade de Coimbra, 3000-272 Coimbra, Portugal Mota-Engil, Portugal a r t i c l e i n f o Article history:...of Portugal, contained quartz veins with cassiterite, wolframite, scheelite, pyrite, arsenopyrite, sphalerite...close to an old Sn-W mine, Ribeira, Northeast Portugal. Chemie Erde - Geochemistry (2013), http://dx...with the high pH (Verplanck et al., 2004). In Portugal there are about ninety abandoned mine sites (Oliveira |  | GĂłmez-FernĂĄndez, Fernando, Vindel, Elena, MartĂn-Crespo, TomĂĄs, SĂĄnchez, Virginia, GonzĂĄlez Clavijo, Emilio, MatĂas, Roberto (2012) The Llamas de Cabrera gold district, a new discovery in the Variscan basement of northwest Spain: A fluid inclusion and stable isotope study. Ore Geology Reviews, 46. 68-82 doi:10.1016/j.oregeorev.2012.02.001 | Journal (article/letter/editorial) | | Keywords: Gold Fluid chemistry Stable isotopes Arsenopyrite geothermometer Northwest Spain a b s t r a...by CO2 and subordinate CH4 related to quartzâarsenopyriteâpyrite deposition, and (3) aqueous ïŹuid inclusions...the Au-sulïŹde deposition. In conjunction with arsenopyrite geothermometry and ïŹuid-inclusion data an attempt...Changes occurred in the PâT conditions from arsenopyrite and pyrite deposition in quartz veins from aqueous-carbonic...(3) analyses the compositional variation of arsenopyrite in order to be used as a geothermometer, (4) |  | | Journal (article/letter/editorial) | | abandoned Sb-Au and As-Au mining areas, northern Portugal Paula C.S. Carvalho a,â , Ana M.R. Neiva a , Maria...Sciences, University of Coimbra, 3000-272 Coimbra, Portugal University of Aveiro, Geosciences Department,...Research Centre, Campus de Santiago, 3810-193 Aveiro, Portugal a r t i c l e i n f o Article history: Received...organic matter, indicating that sulphides (mainly arsenopyrite and pyrite) and sulphosalts containing those...associated with the Valongo anticline (northern Portugal). These Au deposits are classiïŹed as Sb-Au and |  | | Journal (article/letter/editorial) | | Chalcopyrite Cubanite Loellingite Pyrite Marcasite Arsenopyrite Galena Sphalerite Bismuth Bismuthinite Talnakhite... The rare occurrence of fibrous pyrrhotite, arsenopyrite and pyrite suggests that crackâseal mechanisms...chalcopyrite, loellingite, cubanite, pyrite, marcasite, arsenopyrite, gold, bismuth, bismuthinite, talnakhite (Cu9Fe8S10)...intrusion in the genesis of the Castromil gold deposit, northern Portugal. Chemical Geology 194, 201 â 224 |  | Tuduri, Johann, Chauvet, Alain, Barbanson, Luc, Labriki, Mohamed, Dubois, Michel, Trapy, Pierre-Henri, Lahfid, Abdeltif, Poujol, Marc, Melleton, JĂ©rĂ©mie, Badra, Lakhlifi, Ennaciri, Aomar, Maacha, Lhou (2018) Structural control, magmatic-hydrothermal evolution and formation of hornfels-hosted, intrusion-related gold deposits: Insight from the Thaghassa deposit in Eastern Anti-Atlas, Morocco. Ore Geology Reviews, 97. 171-198 doi:10.1016/j.oregeorev.2018.04.023 | Journal (article/letter/editorial) | | scheelite, cassiterite, stannite, molybdenite, arsenopyrite, pyrite, sphalerite, galena and gold (Benkirane...of gold (Au MïĄ) or silver within pyrite and arsenopyrite; they were completed with 80 s of counting time...The dominant mineralogy consists of pyrite and arsenopyrite. Both minerals occur as filling of open space...all the generations of pyrite. Sub-euhedral arsenopyrite is observed only within the external pyrite...07 for arsenopyrite 1 and (Fe0,98Co0.01)(As1.04Sb0,01)S0.95 for arsenopyrite 2. Arsenopyrite 2 presents |  | Tuduri, Johann, Chauvet, Alain, Barbanson, Luc, Bourdier, Jean-Louis, Labriki, Mohamed, Ennaciri, Aomar, Badra, Lakhlifi, Dubois, Michel, Ennaciri-Leloix, Christelle, Sizaret, Stanislas, Maacha, Lhou (2018) The Jbel Saghro Au(âAg, Cu) and AgâHg Metallogenetic Province: Product of a Long-Lived Ediacaran Tectono-Magmatic Evolution in the Moroccan Anti-Atlas. Minerals, 8 (12). 592pp. doi:10.3390/min8120592 | Journal (article/letter/editorial) | | arsenian pyrite with refractory gold (<5 ”m) arsenopyrite, sphalerite and scarce grains of chalcopyrite...galena are abundant while no silver was detected. Arsenopyrite is well represented but always as small euhedral...galena and sphalerite, pyrite, chalcopyrite, arsenopyrite and freibergite (Figure 11g,h). Note that these...galena and sphalerite, pyrite, chalcopyrite, arsenopyrite and freibergite (Figure 11g,h). Note that these...intrusion in the genesis of the Castromil gold deposit, northern Portugal. Chem. Geol. 2003, 194, 201â224 |
|
