Zobrazit minimální záznam

Mineralogical and Fluid Inclusion Evidence for Reworking of Au Mineralization by Ag-Sb-Base Metal-Rich Fluids from the Bytíz Deposit, Příbram Uranium and Base-Metal Ore District, Czech Republic

dc.contributor.authorSejkora, Jiří
dc.contributor.authorDolníček, Zdeněk
dc.contributor.authorZachariáš, Jiří
dc.contributor.authorUlmanová, Jana
dc.contributor.authorŠrein, Vladimír
dc.contributor.authorŠkácha, Pavel
dc.date.accessioned2023-08-31T10:10:26Z
dc.date.available2023-08-31T10:10:26Z
dc.date.issued2022
dc.identifier.urihttps://hdl.handle.net/20.500.14178/2013
dc.description.abstractThis mineralogical and fluid inclusion study was conducted on an Au-bearing quartz-sulfide vein encountered in the deep parts of the Bytíz deposit in the Příbram uranium and base-metal district, Bohemian Massif, Czech Republic. The samples were taken where the Au-bearing vein is crosscut by the common base-metal Zn-Pb ore vein Bt23C. The early mineralization of the Au-bearing vein is composed mainly of quartz (Q-1 to Q-3), illite-muscovite, Fe-Mg chlorite, arsenopyrite, and Au-Ag alloys, showing a wide range of compositions (4-69 at. % Ag) and a decrease in Au/(Au + Ag) ratios during vein evolution. Younger hydrothermal processes led to the crystallization of nests and veinlets composed of late quartz (Q-4), carbonates (siderite, dolomite-ankerite and calcite), base-metal sulfides (galena, sphalerite, chalcopyrite, and tetrahedrite), a suite of Ag and Bi-tellurides, and acanthite. The input of Sb is manifested by the partial to complete replacement of some gold grains by aurostibite and an unnamed (Ag,Au)-Sb oxide with a composition close to AuSbO3. The fluid inclusion study, combined with chlorite thermometry and arsenopyrite thermometry, showed that the early mineralization crystallized from progressively cooled (from 300 to 400 °C down to ca. 180 °C), diluted (1.2-7.0 wt. % NaCl eq.) aqueous solutions. The late portion of the mineralization formed from aqueous fluids with highly variable salinity (0.2-23.4 wt. % NaCl eq.) and homogenization temperatures decreasing from ca. 250 °C to < 50 °C, which compare well with the base-metal mineralization of the vein Bt23C and other base-metal veins of the Příbram ore area. Our study illustrates the nature and intensity of the processes of the reworking of the early gold mineralization mediated by the younger Ag,Sb-rich base-metal fluids, giving rise to Pribram's typical late-Variscan vein Zn-Pb mineralization.en
dc.language.isoen
dc.relation.urlhttps://doi.org/10.3390/min12121539
dc.rightsCreative Commons Uveďte původ 4.0 Internationalcs
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.titleMineralogical and Fluid Inclusion Evidence for Reworking of Au Mineralization by Ag-Sb-Base Metal-Rich Fluids from the Bytíz Deposit, Příbram Uranium and Base-Metal Ore District, Czech Republicen
dcterms.accessRightsopenAccess
dcterms.licensehttps://creativecommons.org/licenses/by/4.0/legalcode
dc.date.updated2024-04-26T12:10:41Z
dc.subject.keywordvein gold depositsen
dc.subject.keywordmetasomatismen
dc.subject.keywordalterationen
dc.subject.keywordmobilizationen
dc.subject.keywordBi-telluridesen
dc.subject.keywordZn-Pb mineralizationen
dc.subject.keywordfluid inclusionsen
dc.subject.keywordPribram uranium and base-metal districten
dc.identifier.eissn2075-163X
dc.relation.fundingReferenceinfo:eu-repo/grantAgreement/UK/PROGRES/Q45
dc.relation.fundingReferenceinfo:eu-repo/grantAgreement/UK/COOP/COOP
dc.date.embargoStartDate2024-04-26
dc.type.obd73
dc.type.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.doi10.3390/min12121539
dc.identifier.utWos000903066700001
dc.identifier.obd621764
dc.identifier.rivRIV/00216208:11310/22:10454105
dc.subject.rivPrimary10000::10500::10505
dcterms.isPartOf.nameMinerals
dcterms.isPartOf.issn2075-163X
dcterms.isPartOf.journalYear2022
dcterms.isPartOf.journalVolume12
dcterms.isPartOf.journalIssue12
uk.faculty.primaryId115
uk.faculty.primaryNamePřírodovědecká fakultacs
uk.faculty.primaryNameFaculty of Scienceen
uk.department.primaryId1063
uk.department.primaryNameÚstav geochemie, mineralogie a nerostných zdrojůcs
uk.department.primaryNameInstitute of Geochemistry, Mineralogy and Mineral Resourcesen
dc.type.obdHierarchyCsČLÁNEK V ČASOPISU::článek v časopisu::původní článekcs
dc.type.obdHierarchyEnJOURNAL ARTICLE::journal article::original articleen
dc.type.obdHierarchyCode73::152::206en
uk.displayTitleMineralogical and Fluid Inclusion Evidence for Reworking of Au Mineralization by Ag-Sb-Base Metal-Rich Fluids from the Bytíz Deposit, Příbram Uranium and Base-Metal Ore District, Czech Republicen


Soubory tohoto záznamu

Thumbnail

Tento záznam se objevuje v následujících kolekcích

Zobrazit minimální záznam