Výsledky vyhledávání - "John F. Lewis"

The geochemistry of the Maimón Formation (Central Cordillera, Dominican

Autor: Salvardor Brower, Lisard Torró, C. Chávez, Carl E. Nelson, R. del Carpio, P. León, J. Espaillat, Júlia Farré de Pablo, Joaquín A. Proenza, Hugo Domínguez, John F. Lewis, Antonio García-Casco

Publikováno v: BOLETÍN GEOLÓGICO Y MINERO. 128:517-540

Esta investigacion ha sido financiada por el proyecto CGL2012-36263 del Ministerio de Economia y Competitividad del Gobierno de Espana, los proyectos 2009-SGR-444 y 2014-SGR-1661 de la Generalitat de Catalunya y los l proyecto obierno de Espana,Fondo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::70e789d260aa7cd9a5bf9b3ff193faf2
https://doi.org/10.21701/bolgeomin.128.3.001

Zobrazit plný text záznamu

Supergene neoformation of Pt-Ir-Fe-Ni alloys: multistage grains explain nugget formation in Ni-laterites

Autor: Joaquín A. Proenza, Thomas Aiglsperger, Mercè Font-Bardia, Salvador Galí, Francisco Longo, John F. Lewis, Sandra Baurier-Aymat

Publikováno v: Dipòsit Digital de la UB
Universidad de Barcelona

Ni-laterites from the Dominican Republic host rare but extremely platinum-group element (PGE)-rich chromitites (up to 17.5 ppm) without economic significance. These chromitites occur either included in saprolite (beneath the Mg discontinuity) or as '

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::61ea59e249c342ca5c83ba31d9895189
https://doi.org/10.1007/s00126-016-0692-6

Zobrazit plný text záznamu

Geochemical record of subduction initiation in the sub-arc mantle: Insights from the Loma Caribe peridotite (Dominican Republic)

Autor: Joaquín A. Proenza, Károly Hidas, Claudio Marchesi, John F. Lewis, Carlos J. Garrido, María Isabel Varas-Reus, Lidia Butjosa

Publikováno v: Lithos. :1-15

The Loma Caribe peridotite body is mainly composed of serpentinized spinel harzburgites and lherzolites and minor orthopyroxene-bearing dunites and dunites. Modal proportions, mineral and whole-rock major and trace element compositions generally coin

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fa518b662611261774130989b7bb3ca9
https://doi.org/10.1016/j.lithos.2016.02.009

Zobrazit plný text záznamu

Critical metals (REE, Sc, PGE) in Ni laterites from Cuba and the Dominican Republic

Autor: Jana Ďurišová, Francisco Longo, Arturo Rojas-Purón, Joaquín A. Proenza, John F. Lewis, Thomas Aiglsperger, M. Labrador, Martin Svojtka

Publikováno v: Ore Geology Reviews. 73:127-147

Ni laterites are considered worthy targets for critical metals (CM) exploration as Rare Earth Elements (REE), Sc and platinum group elements (PGE) can be concentrated during weathering as a result ...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fcd392911a493598497c0b6012df90f9
https://doi.org/10.1016/j.oregeorev.2015.10.010

Zobrazit plný text záznamu

Weathering profile of the Cerro de Maimón VMS deposit (Dominican Republic): textures, mineralogy, gossan evolution and mobility of gold and silver

Autor: Joaquín A. Proenza, John F. Lewis, E. Andreu, Antonio García-Casco, Lisard Torró, J. Espaillat, C. Villanova de Benavent, C. Chávez, Cristina Domènech

Publikováno v: Dipòsit Digital de la UB
Universidad de Barcelona

Cerro de Maimon, in the central Dominican Republic, is currently the only VMS deposit under production in the Caribbean region. It is hosted in the Maimon Formation, of early Cretaceous age, which is part of the oldest and chemically most primitive i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b62f9b58c3eba24df1cd99051de8627c
https://doi.org/10.1016/j.oregeorev.2014.09.015

Zobrazit plný text záznamu

Re-Os and U-Pb Geochronology of the Doña Amanda and Cerro Kiosko Deposits, Bayaguana District, Dominican Republic: Looking Down for the Porphyry Cu-Mo Roots of the Pueblo Viejo-Type Mineralization in the Island-Arc Tholeiitic Series of the Caribbean

Autor: Joaquín A. Proenza, Joan Carles Melgarejo, Holly J. Stein, Paulo León, Carl E. Nelson, Lisard Torró, John F. Lewis, Cevero Chavez, Antoni Camprubí

Publikováno v: Dipòsit Digital de la UB
Universidad de Barcelona

Hosted in the Early Cretaceous bimodal tholeiite volcanic series of the Los Ranchos Formation, the Dona Amanda and Cerro Kiosko deposits in the Bayaguana district represent significant Au, Cu, and Ag resources in the Cordillera Oriental of the Domini

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::785b67a4a45d2b727a029afdd5fd23f1
http://hdl.handle.net/2445/163239

Zobrazit plný text záznamu

Discovery of Ni-smectite rich saprolite at Loma Ortega, Falcondo mining district (Dominican Republic): geochemistry and mineralogy of an unusual case of 'hybrid hydrous Mg silicate-clay silicate' type Ni-laterite

Autor: Esperança Tauler, Thomas Aiglsperger, Tamara Gallardo, John F. Lewis, Cristina Villanova-de-Benavent, Salvador Galí, Joaquín A. Proenza, Cristina Domènech, Francisco Longo

Publikováno v: Dipòsit Digital de la UB
Universidad de Barcelona

Hydrous Mg silicate-type Ni-laterite deposits, like those in the Falcondo district, Dominican Republic, are dominated by Ni-enriched serpentine and garnierite. Recently, abundant Ni-smectite in the saprolite zone have been discovered in Loma Ortega,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c407b58eb97819ef23e64ec88b7b77cc
http://hdl.handle.net/2445/160420

Zobrazit plný text záznamu

Petrogenesis of volcanic rocks from the Maimón Formation (Dominican Republic): Geochemical record of the nascent Greater Antilles paleo-arc

Autor: Lisard Torró, Joaquín A. Proenza, John F. Lewis, Antonio García-Casco, Claudio Marchesi

Publikováno v: Dipòsit Digital de la UB
Universidad de Barcelona
Recercat. Dipósit de la Recerca de Catalunya
instname

Metamorphosed basalts, basaltic andesites, andesites and plagiorhyolites of the Early Cretaceous, probably pre-Albian, Maimon Formation, located in the Cordillera Central of the Dominican Republic, are some of the earliest products of the Greater Ant

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::35905f92231619c547a7fecec29f7256
http://hdl.handle.net/2445/108044

Zobrazit plný text záznamu

Platinum group minerals (PGM) in the Falcondo Ni-laterite deposit, Loma Caribe peridotite (Dominican Republic)

Autor: Thomas Aiglsperger, Joaquín A. Proenza, F. Zaccarini, Francisco Longo, Giorgio Garuti, M. Labrador, John F. Lewis

Publikováno v: Mineralium Deposita. 50:105-123

Two Ni-laterite profiles from the Loma Caribe peridotite (Dominican Republic) have been investigated for their platinum group element (PGE) geochemistry and mineralogy. One profile (Loma Peguera) i ...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b491fedfe73393edbc59542925edb1ee
https://doi.org/10.1007/s00126-014-0520-9

Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání