Exploració per autor "Melgarejo Draper, Joan Carles"

Ara es mostren els items 21-34 de 34

    • Sequence of crystallisation of pegmatites: the Angola case 

      Gonçalves, Antonio Olimpio; Melgarejo Draper, Joan Carles; Alfonso Abella, María Pura (2009)
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    • Spatial and temporal controls on the distribution of indium in xenothermal vein deposits: the Huari Huari district, Potosí, Bolivia 

      Torró Abat, Lisard; Melgarejo Draper, Joan Carles; Gemmrich, Laura; Mollinedo, Diva; Cazorla Martínez, Malena; Martínez, Álvaro; Pujol Solà, Núria; Farré de Pablo, Júlia; Camprubí Cano, Antoni; Artiaga Torres, David; Torres Cueva, Belén; Alfonso Abella, María Pura; Arce Burgoa, Osvaldo R. (2019-05-17)
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      The Huari Huari deposit, Potosí Department in SW Bolivia, hosts polymetallic stratiform and vein mineralization of Miocene age with significant concentrations of the critical metal indium (In). Vein mineralization records ...

    • Stable isotope geochemistry of the Ulldemolins Pb-Zn-Cu deposit (SW Catalonian Coastal Ranges, Spain) 

      Alfonso Abella, María Pura; Canet Miquel, Carles; Melgarejo Draper, Joan Carles; Mata Perelló, Josep Maria; Fallick, A. E. (2012-07)
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    • Subsolidus processes in the Longonjo and Bailundo carbonatites (Angola) 

      Castellano Calvo, Amaia; Melgarejo Draper, Joan Carles; Alfonso Abella, María Pura; Bambi, Aurora Cuaiela João Mateus; Gonçalves, Antonio Olimpio (2012)
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      Realitzat a/amb:   Universidade Agostinho Neto / Universitat de Barcelona

    • The BCN-SGA student chapter: a tool for insertion to research and laboral world in metallogeny 

      Melgarejo Draper, Joan Carles; Proenza, Joaquín Antonio; Tauler Ferré, Esperança; García-Vallès, Maite; Martínez Manent, Salvador; Nogués Carulla, Joaquim Maria; Alfonso Abella, María Pura; Torró Abat, Lisard; Campeny Crego, Marc; Castillo Oliver, Montgarri; Villanova de Benavent, Cristina; Amores Casals, Sandra; Aiglsperger, Thomas; Butjosa Molines, Lídia; Lehbib Nayem, Saleh; Pujol Solà, Núria; Schamuells Panesso, Estafanía; Portell Ramírez, Lena; Jiménez-Franco, Abigail; Baurier Aymat, Sandra; Baraza Piazuelo, Teresa (Congrés Internacional de Docència Universitària i Innovació (CIDUI), 2014)
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      The activity of the BCN-SGA Student Chapter is evaluated. Establishedin 2012 it has grown up to 69 members, organizing 2 international workshops, 8seminars, numerous visits to museums, activities stimulating the use of ...

    • The distribution of rare metals in the LCT pegmatites from the Giraúl field, Angola 

      Gonçalves, Antonio Olimpio; Melgarejo Draper, Joan Carles; Alfonso Abella, María Pura; Amores Casals, Sandra; Paniagua, Andrés; Buta Neto, Andrés; Alves Morais, Eduardo; Camprubí Cano, Antoni (2019-10-24)
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      The Giraúl granitic pegmatite field, Angola, is composed of five pegmatite types; the most evolved belong to the beryl-columbite, beryl-columbite-phosphate and spodumene types. Pegmatites are concentrically zoned with ...

    • The Poopó polymetallic epithermal deposit, Bolivia: mineralogy, genetic constraints, and distribution of critical elements 

      Torres Cueva, Belén; Melgarejo Draper, Joan Carles; Torró Abat, Lisard; Camprubí Cano, Antoni; Castillo Oliver, Montgarri; Artiaga Torres, David; Campeny Crego, Marc; Tauler Ferré, Esperança; Jiménez-Franco, Abigail; Alfonso Abella, María Pura; Arce Burgoa, Osvaldo R. (2019-08-01)
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      The tin-rich polymetallic epithermal deposit of Poopó, of plausible Late Miocene age, is part of the Bolivian Tin Belt. As an epithermal low sulfidation mineralisation, it represents a typological end-member within the ...

    • The production of a lead glaze with galena: Thermal transformations in the PbS-SiO2 system 

      Di Febo, Roberta; Molera Marimon, Judit; Pradell Cara, Trinitat; Melgarejo Draper, Joan Carles; Madrenas, Josep; Vallcorba, Oriol (2017-12-04)
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      Galena, also known as PbS, was widely used in the production of lead glazes from the beginning of the 18th century to the second half of the 20th century. Although the PbO-SiO2 system has been studied for years, the PbS-SiO2 ...

    • The San José-Itos mines, Oruro, Bolivia: structure and Ag-Sn mineralization 

      Pastor, Míriam; Agustí Pastor, Cristina; Torró Abat, Lisard; Martínez, Álvaro; Artiaga Torres, David; Torres Cueva, Belén; Tauler Ferré, Esperança; Melgarejo Draper, Joan Carles; Paillo, Fernando; Arce Burgoa, Osvaldo R.; Alfonso Abella, María Pura (2015)
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      A new cartography of the veins and a detailed mineral sequence is provided for the Itos and San José mines, Oruro, Bolivia. The mineral sequence comprises an early stage with arsenopyrite, arsenian pyrite and cassiterite, ...

    • Thin-section petrography and SR-µXRD for the identification of micro-crystallites in the brown decorations of ceramic lead glazes 

      Di Febo, Roberta; Molera Marimon, Judit; Pradell Cara, Trinitat; Vallcorba, Oriol; Melgarejo Draper, Joan Carles; Capelli, Claudio (2017-12-01)
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      The Mn-and Fe-rich micro-crystalline precipitates formed in the decorations of lead glazes during ceramic firing are responsible for colour, shine and opacity, among other visual characteristics, besides being the most ...

    • U-Pb geochronology on zircon and columbite-group minerals of the Cap de Creus pegmatites, NE Spain 

      Van Lichtervelde, Marieke; Grand’Homme, Alexis; de Saint-Blanquat, Michel; Olivier, Philippe; Gerdes, Axel; Paquette, Jean-Louis; Melgarejo Draper, Joan Carles; Druget, Elena; Alfonso Abella, María Pura (2016-08-12)
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    • Un modelo de depósito vulcanogénico de manganeso del arco volcánico paleógeno de Cuba: el ejemplo de la región Cristo-Ponupo-Los Chivos 

      Cazañas, Xiomara; Melgarejo Draper, Joan Carles; Alfonso Abella, María Pura; Escusa, Albert; Cuba, Santiago (Consejo Superior de Investigaciones Científicas (CSIC), 1998)
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    • Valor patrimonial de las pegmatitas del Cap de Creus 

      Alfonso Abella, María Pura; Melgarejo Draper, Joan Carles (2008)
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      Las pegmatitas graníticas del Cap de Creus constituyen un importante elemento de nuestro patrimonio geológico, con importantes aportaciones, tanto por su gran variedad mineralógica como por la información científica que ...

    • Zonación del pirocloro primario en carbonatitas de Angola 

      Mateus Bambi, Aurora Cuiaela Joao; Melgarejo Draper, Joan Carles; Gonçalves, Antonio Olimpio; Alfonso Abella, María Pura; Costanzo, Alessandra (2009)
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