Ara es mostren els items 1-20 de 212

    • A comparative study of quartz and potassium feldspar flotation process using different chemical reagents 

      Mohanty, Kalyani; Oliva Moncunill, Josep; Alfonso Abella, María Pura; Hoffmann Sampaio, Carlos; Anticoi Sudzuki, Hernán Francisco (2024-02-04)
      Article
      Accés obert
      An improved method for producing high-purity quartz (Qtz) and potassium feldspar (Kfs) concentrates was developed using various chemical reagents. Froth flotation experiments on a Qtz–Kfs mixture showed that quartz could ...
    • A compilation of field surveys on gaseous elemental mercury (GEM) from contrasting environmental settings in Europe, South America, South Africa and China: separating fads from facts 

      Higueras Higueras, Pablo Leon; Oyarzun, Roberto; Kotnik, Joze; Esbri, José Maria; Martínez-Coronado, A; Horvat, M; López-Berdonces, M.A.; Llanos Lazcano, Willians; Vaselli, O.; Nisi, B.; Mashyanov, Nikolai; Ryzov, Vladimir; Spiric, Z; Panichev, Nikolai; McCrindle, R; Fenj, X.; Fu, X.; Lillo, J; Loredo, José; García, María Eugenia; Alfonso Abella, María Pura; Villegas Flores, Karla Stephanie; Palacios Ubach, Sílvia; Oyarzún, J; Maturana, H.; Contreras, F.; Adams, M.; Ribeiro-Guevara, S; Niecenski, L.F.; Giammanco, S; Huremovic, J. (2014)
      Article
      Accés restringit per política de l'editorial
      Mercury is transported globally in the atmosphere mostly in gaseous elemental form (GEM, Hggas 0), but still few worldwide studies taking into account different and contrasted environmental settings are available in a ...
    • A survey to analyze the learning of geology in the Compulsory Secondary Education system of Catalonia (Spain) 

      Roca Pascual, Núria; García-Vallès, Maite; Alfonso Abella, María Pura; Calafat Frau, Antoni; Bover Arnal, Telm; Calvet Pallas, Maria Teresa; Playà Pous, Elisabet; Guinau Selles, Marta; Delclòs Martinez, Xavier; Rios, Martin (2021-11-29)
      Article
      Accés obert
    • An improved high-pressure roll crusher model for tungsten and tantalum ores 

      Anticoi Sudzuki, Hernán Francisco; Guasch Cascallo, Eduard; Hamid, Sarbast; Oliva Moncunill, Josep; Alfonso Abella, María Pura; Bascompta Massanes, Marc; Sanmiquel Pera, Lluís; Escobet Canal, Teresa; Escobet Canal, Antoni; Parcerisa Duocastella, David; Peña Pitarch, Esteve; Argelaguet Isanta, María Rosa; Felipe Blanch, José Juan de (2018-10-25)
      Article
      Accés obert
      An improved approach is presented to model the product particle size distribution resulting from grinding in high-pressure roll crusher with the aim to be used in standard high-pressure grinding rolls (HPGR). This approach ...
    • An introduction to Irish-type Zn-Pb deposits in early Cretaceous carbonate rocks of Iran 

      Rajabi, Abdorrahman; Mahmoodi, Pouria; Rastad, Ebrahim; Canet Miquel, Carles; Alfonso Abella, María Pura; Niroomand, Shojaedin; Yarmohammadi, Ali; Peernajmodin, Hamid; Akbari, Zahra (2023)
      Text en actes de congrés
      Accés obert
      Early Cretaceous carbonates are the most common host rocks for Irish-type deposits in Iran. They are largely concentrated in the Malayer-Esfahan metallogenic belt (MEMB) in southwestern Iran, and Yazd-Anarak metallogenic ...
    • Analysis of the European tourist mines and caves to design a monitoring system 

      Sanmiquel Pera, Lluís; Alfonso Abella, María Pura; Bascompta Massanes, Marc; Vintró Sánchez, Carla; Parcerisa Duocastella, David; Oliva Moncunill, Josep (2018)
      Article
      Accés obert
      A database of tourist mines and caves has been created to investigate the requirements of an integrated monitoring system with the aim of ensuring the safety of visitors and preserving the environment of the activities. ...
    • Analysis of the process of compaction movements of deposits of crushed salt tailings 

      Yubero de Mateo, Maria Teresa; Olivella Pastallé, Sebastià; Gens Solé, Antonio; Bonet Gil, Enrique; Lloret Morancho, Antonio; Alfonso Abella, María Pura (2021-11)
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    • Aprovechamiento de residuos mineros para la fabricación de nuevos materiales 

      Anticoi Sudzuki, Hernán Francisco; Alfonso Abella, María Pura; Garcia Valles, Maite; Hoffmann Sampaio, Carlos; Oliva Moncunill, Josep; Bascompta Massanes, Marc; Martínez Alcalá, Arnau (2023)
      Text en actes de congrés
      Accés obert
      El consumo actual de recursos minerales es muy elevado, conllevando una elevada generación de residuos durante su explotación y procesado industrial. La utilización de estos residuos como materia prima representa una ...
    • Basin evolution and stratigraphic correlation of sedimentary-exhalative Zn–Pb deposits of the Early Cambrian Zarigan–Chahmir Basin, Central Iran 

      Abdorrahman, Rajabi; Canet Miquel, Carles; Rastad, Ebrahim; Alfonso Abella, María Pura (2015)
      Article
      Accés restringit per política de l'editorial
      The Zarigan-Chahmir basin is placed to in the southern part of a crustal domain known as the Central Iranian microcontinent, at the northwestern margin of Gondwana. It hosts abundant mineral deposits, particularly of the ...
    • Bioevents and redox conditions around the Cenomanian-Turonian anoxic event in Central Mexico 

      Núñez Useche, Fernando; Canet Miquel, Carles; Barragán, Ricardo; Alfonso Abella, María Pura (Elsevier, 2016-05-01)
      Article
      Accés obert
      The Xilitla section of central Mexico (western margin of the proto-North Atlantic) is characterized by pelagic sediments enriched in marine organic matter. Using biostratigraphic and radiometric data, it was dated at the ...
    • Biogenic vs geochemical precipitation of minerals in the submarine hydrothermal vents of Punta Mita, Mexico 

      Prol Ledesma, Rosa Maria; Canet Miquel, Carles; Alfonso Abella, María Pura; Melgarejo Draper, Joan Carles (2002)
      Text en actes de congrés
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      The submarine hydrothermal vents located in the vicinity of Punta Mita contain abundant deposition of calcite, pyrite. Also present are barite, carbonate hydroxyl-apatite, cinnabar and T1-sulfide.Textures indicate direct ...
    • Boron vs. phosphorus in granitic pegmatites: the Cap de Creus case (Catalonia, Spain) 

      Alfonso Abella, María Pura; Melgarejo Draper, Joan Carles (2000-01)
      Article
      Accés obert
      The Cap de Creus pegmatite field exhibits a well-defined regional zonation of four types of granitic pegmatite: barren K-feldspar-rich pegmatites (type I), beryl-columbite-subtype pegmatites (type II), beryl-columbite-ph ...
    • Breakage function for HPGR: mineral and mechanical characterization of tantalum and tungsten ores 

      Anticoi Sudzuki, Hernán Francisco; Guasch Cascallo, Eduard; Hamid, Sarbast; Oliva Moncunill, Josep; Alfonso Abella, María Pura; García-Vallès, Maite; Bascompta Massanes, Marc; Sanmiquel Pera, Lluís; Escobet Canal, Teresa; Argelaguet Isanta, María Rosa; Escobet Canal, Antoni; Felipe Blanch, José Juan de; Parcerisa Duocastella, David; Peña Pitarch, Esteve (2018-04-20)
      Article
      Accés obert
      The modelling of high pressure grinding rolls is described by the population balance model, a mass balance which includes several functions that are related to the mineral characteristics, material kinetics and operative ...
    • Caracterización de la Pedra de Floresta y su interés patrimonial 

      Alfonso Abella, María Pura; Parcerisa Duocastella, David; Mata Perelló, Josep Maria; Monterde Ruiz, Eva; Daura Ollé, Joaquim (Instituto Geológico y Minero de España (IGME), 2010)
      Llibre
      Accés restringit per política de l'editorial
    • Caracterización del yacimiento de oro de Misky, sur del Perú 

      Palacios Ubach, Sílvia; Alfonso Abella, María Pura; Mata Perelló, Josep Maria (2011)
      Text en actes de congrés
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      Realitzat a/amb:   Red Social / Sociedad Nacional de Minería en Pequeña Escala
    • Carbonate-hosted Zn-Pb-Cu-Ba (-Ag) mineralization in the Mehdiabad deposit, Iran: new insights, new discoveries 

      Mohammadi, Ghazaleh Khan; Rajabi, Abdorrahman; Niroomand, Shojaedin; Mahmoodi, Pouria; Canet Miquel, Carles; Alfonso Abella, María Pura (2023)
      Comunicació de congrés
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      The Mehdiabad deposit in the Yazd-Anarak metallogenic belt (YAMB), central Iran, is the largest car-bonate-hosted Zn-Pb-Ba-Cu (-Ag) deposit in the world, with a reserve of 630 Mt sulphide and non-sulphide ore. It was formed ...
    • Carbonatitic lavas in Catanda (Kwanza Sul, Angola): mineralogical and geochemical constraints on the parental melt 

      Campeny Crego, Marc; Kamenetsky, Vadim S; Melgarejo Draper, Joan Carles; Mangas, José; Manuel, José; Alfonso Abella, María Pura; Kamenetsky, Maya; Bambi, Aurora Cuaiela João Mateus; Gonçalves, Antonio Olimpio (2015-09-01)
      Article
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    • Colaboración interuniversitaria como soporte a la pequeña minería en Angola 

      Alfonso Abella, María Pura; Melgarejo Draper, Joan Carles; Mesa Vílchez, Claudia; Mata Perelló, Josep Maria; Monterde Ruiz, Eva (Universitat Autònoma de Barcelona (UAB), 2008)
      Comunicació de congrés
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      Realitzat a/amb:   Universidade Agostinho Neto / Universitat de Barcelona
      Angola, con una gran cantidad de recursos minerales, no cuenta con capacidad, tanto material como humana, para desarrollar las tareas necesarias pa ra el aprovechamiento óptimo de sus recursos, a excepción del petróleo y ...
    • Combining ammonium mapping and short-wave infrared (SWIR) reflectance spectroscopy to constrain a model of hydrothermal alteration for the Acoculco geothermal zone, Eastern Mexico 

      Canet Miquel, Carles; Hernández-Cruz, B; Jiménez-Franco, Abigail; Pi Puig, Teresa; Peláez, B; Villanueva Estrada, Ruth Esther; Alfonso Abella, María Pura; González Partida, Eduardo; Salinas, S. (2015)
      Article
      Accés restringit per política de l'editorial
      The Acoculco geothermal system is hosted by a caldera complex located at the eastern portion of the Trans-Mexican Volcanic Belt. Surface manifestations are scarce and consist of low temperature, bubbling, acid–sulfate ...
    • Comerç just de l’or a Sud amèrica 

      Bascompta Massanes, Marc; Alfonso Abella, María Pura (2018)
      Presentació
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