Occurrence of chromiferous horizon in the Trincheira Complex, municipality of Corumbiara, southeast of the State of Rondônia, Brazil

dc.creatorSILVA, Guilherme Ferreira da
dc.creatorRIBEIRO, Thyago de J.
dc.creatorCORRÊA, Lívio W. C.
dc.creatorSILVA, Dalton Rosemberg V. da
dc.creatorOLIVEIRA, Carlos E. S. de
dc.date2017-12-20T08:35:29Z
dc.date2017-12-20T08:35:29Z
dc.date2017-05
dc.date.accessioned2023-10-03T21:07:34Z
dc.date.available2023-10-03T21:07:34Z
dc.identifierSILVA, Guilherme Ferreira da et al. Occurrence of chromiferous horizon in the Trincheira Complex, municipality of Corumbiara, southeast of the State of Rondônia, Brazil. Technical report, Brasília, n. 11, may 2017.
dc.identifier2448-2242
dc.identifierhttps://rigeo.cprm.gov.br/handle/doc/18775
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/9180837
dc.descriptionThe Trincheira Mafic-ultramafic Complex comprises a Mesoproterozoic layered intrusion hosted in metasedimentary rocks of the southwestern portion of the Amazonian Craton. This intrusion has an outcropping area of approximately 35 km2 , however, it has been associated to a larger ellipsoidal magnetic anomaly with N-S elongated shape. The Trincheira Complex is com-posed of partially metamorphosed pyroxenites, websterites, gabbros and anorthosites. The complex hosts Cr-rich layers associated to relevant concentrations of Ni. High concentrations of Cu, Co and V have also been detected. Preliminary analysis performed with portable X-ray diffraction indicates up to 13% Cr and occurrence of cochromite, a special variety of chromite enriched in cobalt, nickel and iron, whereas ICP-MS analyses returned concentrations of up to ~3600 ppm Cr.
dc.formatapplication/pdf
dc.languageen
dc.publisherCPRM
dc.rightsopen
dc.rights
dc.rights
dc.rights
dc.rights
dc.subjectINTRUSÕES MÁFICO-ULTRAMÁFICAS
dc.subjectROCHAS CUMULÁTICAS
dc.subjectCRÁTON AMAZÔNICO
dc.subjectCOMPLEXO TRINCHEIRA
dc.subjectCORUMBIARA
dc.subjectRONDÔNIA
dc.subjectMAFIC-ULTRAMAFIC INTRUSIONS
dc.subjectCUMULATE ROCKS
dc.subjectAMAZONIAN CRATON
dc.subjectTRINCHEIRA COMPLEX
dc.titleOccurrence of chromiferous horizon in the Trincheira Complex, municipality of Corumbiara, southeast of the State of Rondônia, Brazil
dc.typeArticle


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