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dc.contributor.author
Siegesmund, Siegfried
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dc.contributor.author
López Doncel, Rubén
dc.contributor.author
Sieck, Pascal
dc.contributor.author
Wilke, Hendrik
dc.contributor.author
Wemmer, Klaus
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dc.contributor.author
Frei, Dirk
dc.contributor.author
Oriolo, Sebastián
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dc.date.available
2019-10-30T20:31:05Z
dc.date.issued
2018-03
dc.identifier.citation
Siegesmund, Siegfried; López Doncel, Rubén; Sieck, Pascal; Wilke, Hendrik; Wemmer, Klaus; et al.; Geochronological and geochemical constraints on the genesis of Cu-Au skarn deposits of the Santa María de la Paz district (Sierra del Fraile, Mexico); Elsevier Science; Ore Geology Reviews; 94; 3-2018; 310-325
dc.identifier.issn
0169-1368
dc.identifier.uri
http://hdl.handle.net/11336/87716
dc.description.abstract
Cu-Au skarn deposits of the mining district of Santa María de La Paz are located in the Sierra del Fraile, in the northern part of San Luis Potosí, Mexico. Samples of four different intrusions and their related skarn deposits were taken underground, in order to obtain whole-rock and mineral geochemical data. U-Pb LA-ICP-MS zircon data indicate crystallization ages of ca. 37.6–35.0 Ma for skarn-related granitic and granodioritic stocks, which show dominant metaluminous to slightly peraluminous, high-K calc-alkaline compositions. These intrusions were emplaced in a post-Laramide continental arc setting under shallow conditions, as suggested by fast cooling inferred from K-Ar biotite ages of ca. 35–33 Ma. Skarn deposits were contemporaneous with emplacement and crystallization of stocks, as revealed by Re-Os molybdenite geochronological data of exoskarn rocks. Skarn rocks show a general depletion of LILE and REE and a slightly enrichment in HFSE in comparison with intrusive rocks. Pyroxene and garnet show dominant hedenbergite and andradite compositions, respectively. The association of hedenbergite, pyrite, chalcopyrite, native bismuth and pyrrhotite during skarn mineralization suggest reducing conditions, typical for Au but not for Cu skarns. Highest metal contents are concentrated in exoskarn rocks, including anomalies of Cu, Fe, Ni, Sn, Sb, Zn, W and Bi. Metal contents, ore minerals and environmental conditions of skarn rocks, together with whole-rock geochemical data of stocks and pyroxene-garnet compositions, reveal some singularities for the Sierra del Fraile deposits, as they exhibit characteristics of both Cu and Au skarn deposits but might be also compatible with Fe, W, and Zn skarns. Hence, skarn and associated vein deposits of the Sierra del Fraile might have a high potential not only for Cu-Au, but also for several base metals, as reported for comparable post-Laramide skarn and hydrothermal deposits of central and northern Mexico.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ANDRADITE-HEDENBERGITE SKARN
dc.subject
CU-AU MINERALIZATION
dc.subject
EOCENE
dc.subject
ORE DEPOSITS
dc.subject
POST-LARAMIDE MAGMATISM
dc.subject
RE-OS GEOCHRONOLOGY
dc.subject.classification
Geología
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dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Geochronological and geochemical constraints on the genesis of Cu-Au skarn deposits of the Santa María de la Paz district (Sierra del Fraile, Mexico)
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-10-15T15:19:55Z
dc.journal.volume
94
dc.journal.pagination
310-325
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Siegesmund, Siegfried. Universität Göttingen; Alemania
dc.description.fil
Fil: López Doncel, Rubén. Universidad Autonoma de San Luis Potosi; México
dc.description.fil
Fil: Sieck, Pascal. Instituto Potosino de Investigación Científica y Tecnológica; México. Universität Göttingen; Alemania
dc.description.fil
Fil: Wilke, Hendrik. Universität Göttingen; Alemania
dc.description.fil
Fil: Wemmer, Klaus. Universität Göttingen; Alemania
dc.description.fil
Fil: Frei, Dirk. University Of The Western Cape; Sudáfrica
dc.description.fil
Fil: Oriolo, Sebastián. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; Argentina
dc.journal.title
Ore Geology Reviews
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0169136817306431
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.oregeorev.2018.02.010
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