000130975 001__ 130975
000130975 005__ 20240202151703.0
000130975 0247_ $$2doi$$a10.3749/canmin.50.2.447
000130975 0248_ $$2sideral$$a78253
000130975 037__ $$aART-2012-78253
000130975 041__ $$aeng
000130975 100__ $$aGervilla, Fernando
000130975 245__ $$aMineral compositions and phase relations of ni-co-fe arsenide ores from the aghbar mine, Bou Azzer, Morocco
000130975 260__ $$c2012
000130975 5203_ $$aIn an attempt to contribute to a better knowledge of phase relations, chemical trends and complex depositional history of the Co–Ni arsenide ores at Bou Azzer district, Morocco, (and by extension to the natural arsenides and sulfarsenides of the Ni–Co–Fe–As–S system), forty samples from the Aghbar mine have been studied. The Aghbar mine, located in the western central area of the Bou Azzer inlier, displays noticeable mineralogical variations depending on the type of mineralization: filling veins or replacing the host serpentinite. Nickel ores of vein type, Co–Fe ores of serpentinite-hosted type and late Cu ores are the assemblages that we identified. Although there is a good agreement with the general sequence established for the Bou Azzer district, meaningful differences in mineral chronology, composition and temperatures of formation are discussed on the basis of the experimental data. The crystallization sequence of Ni ores reveals a continuous increase in As fugacity up to the formation of Ni-rich skutterudite, with formation temperatures fitting well the field of solid solution experimentally established at 650°–625°C. In contrast, the Co–Fe ores seem to form at a somewhat lower temperature (from ~500° to 400°C), and especially at the lower part of this range, during the crystallization of arsenopyrite. These temperature differences between the two main ores of the deposit can be interpreted by assuming either different temperatures in the two ore-forming fluids or considering differences in the paths followed by similarly hot mineralizing fluids.
000130975 540__ $$9info:eu-repo/semantics/openAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/
000130975 590__ $$a1.18$$b2012
000130975 591__ $$aMINERALOGY$$b15 / 26 = 0.577$$c2012$$dQ3$$eT2
000130975 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000130975 700__ $$0(orcid)0000-0002-0302-2737$$aFanlo, Isabel$$uUniversidad de Zaragoza
000130975 700__ $$0(orcid)0000-0002-9615-9168$$aColás, Vanessa
000130975 700__ $$0(orcid)0000-0002-5159-3956$$aSubías, Ignacio$$uUniversidad de Zaragoza
000130975 7102_ $$12000$$2120$$aUniversidad de Zaragoza$$bDpto. Ciencias de la Tierra$$cÁrea Cristalografía Mineralog.
000130975 773__ $$g50, 2 (2012), 447-470$$pCan. mineral.$$tCANADIAN MINERALOGIST$$x0008-4476
000130975 85641 $$uhttps://pubs.geoscienceworld.org/canmin/article-abstract/50/2/447/127389/MINERAL-COMPOSITIONS-AND-PHASE-RELATIONS-OF-Ni-Co?redirectedFrom=fulltext$$zTexto completo de la revista
000130975 8564_ $$s12617218$$uhttps://zaguan.unizar.es/record/130975/files/texto_completo.pdf$$yVersión publicada
000130975 8564_ $$s1975279$$uhttps://zaguan.unizar.es/record/130975/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000130975 909CO $$ooai:zaguan.unizar.es:130975$$particulos$$pdriver
000130975 951__ $$a2024-02-02-14:50:33
000130975 980__ $$aARTICLE