Ore mineralogy of bimodal-mafic VMS deposits hosted in Early Cretaceous Greater Antilles island-arc tholeiite series

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To access the full text documents, please follow this link: http://hdl.handle.net/2117/120854

dc.contributor	Universitat Politècnica de Catalunya. Departament d'Enginyeria Minera, Industrial i TIC
dc.contributor.author	Torró Abat, Lisard
dc.contributor.author	Proenza, Joaquín Antonio
dc.contributor.author	Melgarejo Draper, Joan Carles
dc.contributor.author	Alfonso Abella, María Pura
dc.coverage.spatial	east=-70.24383544921875; north=18.880625295067603; name=Monseñor Nouel Province, 42000, República Dominicana
dc.coverage.spatial	east=-79.97801779999998; north=22.1466556; name=Manicaragua, Cuba
dc.date	2015
dc.identifier.citation	Torró, L., Proenza, J.A., Melgarejo, J.C., Alfonso, P. Ore mineralogy of bimodal-mafic VMS deposits hosted in Early Cretaceous Greater Antilles island-arc tholeiite series. A: Reunión de la Sociedad Española de Mineralogía. "Macla: revista de la Sociedad Española de Mineralogía. 2015, no. 20". 2015, p. 143-144.
dc.identifier.citation	ISSN 1885-7264
dc.identifier.uri	http://hdl.handle.net/2117/120854
dc.language.iso	eng
dc.relation	http://www.ehu.eus/sem/macla_pdf/macla20/Macla20_143-144.pdf
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	Àrees temàtiques de la UPC::Enginyeria civil::Geologia::Mineralogia
dc.subject	Mineralogy--Antilles, Greater
dc.subject	VMS
dc.subject	Caribbean island-arc
dc.subject	Subduction initiation
dc.subject	Sulfide geochemistry
dc.subject	Arco-isla Caribeño
dc.subject	Inicio de subducción
dc.subject	Geoquímica de sulfuros
dc.subject	Mineralogia--Grans Antilles
dc.title	Ore mineralogy of bimodal-mafic VMS deposits hosted in Early Cretaceous Greater Antilles island-arc tholeiite series
dc.type	info:eu-repo/semantics/publishedVersion
dc.type	info:eu-repo/semantics/conferenceObject
dc.description.abstract	VMS 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, formed during the earliest stages of island-arc volcanism and 2) mafic (Cyprus) type, formed in mature back-arc basins (Nelson et al., 2011). Bimodal-mafic VMS deposits are in the main hosted in tholeiitic volcanic rocks of Early Cretaceous age of the Maimón and Amina Formations in Cordillera Central of the Dominican Republic and in Los Pasos Formation and Purial Complex in central and eastern Cuba respectively. Mild though decided trend toward Sb enrichment in tennantite from stratiform ores in the San Fernando and Antonio deposits with respect to Cerro de Maimón parallel lower values of Se and As and higher contents in the more incompatibles Sb, Te and Bi in galena. These nuances in ore geochemistry support a slightly more primitive setting of formation of VMS mineralization in the Maimón Formation denoted by the lithogeochemistry of the hosting volcanic units.

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