Exploració per autor "Melgarejo Draper, Joan Carles"
Ara es mostren els items 15-34 de 34
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Minerales de Nb y REE en las carbonatitas de Longonjo y Bailundo, Angola
Castellano Calvo, Amaia; Melgarejo Draper, Joan Carles; Alfonso Abella, María Pura; Bambi, Aurora Cuaiela João Mateus; Gonçalves, Antonio Olimpio; Castillo Oliver, Montgarri (Sociedad Española de Mineralogía, 2011)
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Accés obertBailundo y Longonjo son dos de los mayores macizos carbonatíticos de Angola, en los que Lapido-Lourelio (1973) y Alberti et al. (1999) mencionaron la presencia de minerales de Nb, pero las condiciones políticas impidieron ... -
Mineralogy and distribution of critical elements in the Sn–W–Pb–Ag–Zn Huanuni deposit, Bolivia
Cacho Amorós, Andreu; Melgarejo Draper, Joan Carles; Camprubí Cano, Antoni; Torró Abat, Lisard; Castillo-Oliver, Montgarri; Torres Cueva, Belén; Artiaga Torres, David; Tauler Ferré, Esperança; Martínez, Álvaro; Campeny Grego, Marc; Alfonso Abella, María Pura; Arce Burgoa, Osvaldo R. (2019)
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Accés obertThe polymetallic Huanuni deposit, a world-class tin deposit, is part of the Bolivian tin belt. As a likely case for a “mesothermal” or transitional deposit between epithermal and porphyry Sn types (or shallow porphyry Sn), ... -
Mineralogy, geochemistry and sulfur isotope characterization of Cerro de maimón (Dominican Republic), San Fernando and Antonio (Cuba) lower cretaceous VMS deposits: formation during subduction initiation of the proto-Caribbean lithosphere within a fore-arc
Torró Abat, Lisard; Proenza, Joaquín Antonio; Melgarejo Draper, Joan Carles; Alfonso Abella, María Pura; Farré de Pablo, J.; Colomer, Josep Maria; García-Casco, Antonio; Gubern, Antoni; Gallardo, Emilio; Cazañas, Xiomara; Chávez, C.; Del Carpio, R.; León, P.; Nelson, C.E.; Lewis, John (2016-01)
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Ore mineralogy of bimodal-mafic VMS deposits hosted in Early Cretaceous Greater Antilles island-arc tholeiite series
Torró Abat, Lisard; Proenza, Joaquín Antonio; Melgarejo Draper, Joan Carles; Alfonso Abella, María Pura (2015)
Comunicació de congrés
Accés obertVMS deposits in the Greater Antilles are described throughout the Dominican Republic and Cuba, genetically linked to two main episodes of the island-arc tectonic and magmatic evolution: 1) bimodal mafic type deposits, ... -
Origen de las aguas responsables del proceso de serpentinización en la faja ofiolítica Mayarí-Baracoa (Cuba oriental): un estudio isotópico de H y O
Proenza, Joaquín Antonio; Alfonso Abella, María Pura; Melgarejo Draper, Joan Carles; Gervilla Linares, Fernando; Tritlla, J.; Fallick, A. E. (2000)
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Óxidos de Nb-Ta de las pegmatitas graníticas de Giraúl, Angola
Gonçalves, Antonio Olimpio; Alfonso Abella, María Pura; Melgarejo Draper, Joan Carles; Buta Neto, Andrés; Paniagua, Andres (Sociedad Española de Mineralogía, 2006)
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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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Accés obertThe 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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Accés obertThe 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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Accés obertThe 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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Accés obertThe 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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Accés obertGalena, 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)
Comunicació de congrés
Accés obertA 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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Accés restringit per política de l'editorialThe 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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Accés obertLas 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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