FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2894762225> ?p ?o ?g. }

• W2894762225 endingPage "638" @default.
• W2894762225 startingPage "618" @default.
• W2894762225 abstract "São Sebastião is a recently discovered Archean gold deposit at the northwesternmost part of the Quadrilátero Ferrífero (QF), southern São Francisco craton, Brazil. The gold ore is strata-confined in two levels of banded iron formation (BIF) of the basal stratigraphic unit in the Pitangui greenstone belt (2.8 Ga). Pitangui is correlated to the widely known Rio das Velhas greenstone belt, which hosts several orogenic gold deposits such as the world-class Cuiabá. The gold mineralization at São Sebastião is associated to replacement-style sulfidation over magnetite, where the main developed phases are: pyrrhotite, chalcopyrite, arsenopyrite, pyrite and arsenian-pyrite. Native Au occurs as inclusions in pyrrhotite formed at dilatation domains (e.g., breccias, fold hinges) during compressional events (Rio das Velhas Orogeny at 2.8–2.75 Ga), but mainly as inclusions in late- to post-kinematic pyrite and arsenopyrite, as fracture infills in arsenopyrite and in contact with gangue minerals. Electron-microprobe analyses in arsenopyrite reveal a 465–560 °C precipitation temperature interpreted from As atomic percentage and indicate that high-temperature fluids were active after the deformational event. The temperature increase caused the incorporation of LA-ICP-MS-detected lattice-bound Ni and Co in arsenian-pyrite and arsenopyrite, related to the mafic-ultramafic signature of boundary rocks. High temperature conditions are supported by pyrite and ISS (intermediate-solid solution in the Cu-Fe-S system) formation at 600 °C and melting-derived textures resulting from the precipitation of Bi- and As-melts, typical of amphibolite-facies environments with high fS2. Whole-rock geochemical assays of drill core samples display two clear trends on Ag, Bi, Cu vs. Au binary plots and on principal component analysis results. The trends are a product of the heterogeneous spatial distribution of melts and high-temperature fluids. Melting features and superposition of mineralization styles are common in hypozonal gold deposits experiencing higher heat influx. At São Sebastião, the thermal effect is likely related to the 2.7 Ga granitic intrusions that surround the Pitangui belt. São Sebastião shows distinct characteristics than those described for the mesozonal gold deposits in the Rio das Velhas greenstone belt and may depict the deeper roots of the QF gold system." @default.
• W2894762225 created "2018-10-12" @default.
• W2894762225 creator A5004543427 @default.
• W2894762225 creator A5023577836 @default.
• W2894762225 creator A5029329134 @default.
• W2894762225 creator A5042894276 @default.
• W2894762225 creator A5048060902 @default.
• W2894762225 creator A5058751081 @default.
• W2894762225 creator A5078449256 @default.
• W2894762225 creator A5081488300 @default.
• W2894762225 creator A5086999062 @default.
• W2894762225 date "2018-11-01" @default.
• W2894762225 modified "2023-09-27" @default.
• W2894762225 title "Multistage mineralization at the hypozonal São Sebastião gold deposit, Pitangui greenstone belt, Minas Gerais, Brazil" @default.
• W2894762225 cites W1025143415 @default.
• W2894762225 cites W1176290915 @default.
• W2894762225 cites W1434692241 @default.
• W2894762225 cites W1934361153 @default.
• W2894762225 cites W1965759444 @default.
• W2894762225 cites W1969185546 @default.
• W2894762225 cites W1970688872 @default.
• W2894762225 cites W1970901883 @default.
• W2894762225 cites W1974688320 @default.
• W2894762225 cites W1978220484 @default.
• W2894762225 cites W1979595129 @default.
• W2894762225 cites W1979787549 @default.
• W2894762225 cites W1982841476 @default.
• W2894762225 cites W1985887969 @default.
• W2894762225 cites W1991964081 @default.
• W2894762225 cites W1997777462 @default.
• W2894762225 cites W1999130073 @default.
• W2894762225 cites W1999487443 @default.
• W2894762225 cites W2002372231 @default.
• W2894762225 cites W2005407752 @default.
• W2894762225 cites W2011001616 @default.
• W2894762225 cites W2012322530 @default.
• W2894762225 cites W2014946463 @default.
• W2894762225 cites W2016343665 @default.
• W2894762225 cites W2017002868 @default.
• W2894762225 cites W2022944442 @default.
• W2894762225 cites W2027413598 @default.
• W2894762225 cites W2028784400 @default.
• W2894762225 cites W2052216307 @default.
• W2894762225 cites W2061314692 @default.
• W2894762225 cites W2063207193 @default.
• W2894762225 cites W2065823329 @default.
• W2894762225 cites W2071680290 @default.
• W2894762225 cites W2072062807 @default.
• W2894762225 cites W2075901285 @default.
• W2894762225 cites W2078365254 @default.
• W2894762225 cites W2078602930 @default.
• W2894762225 cites W2080243666 @default.
• W2894762225 cites W2085133167 @default.
• W2894762225 cites W2085584984 @default.
• W2894762225 cites W2085961199 @default.
• W2894762225 cites W2088115646 @default.
• W2894762225 cites W2091008334 @default.
• W2894762225 cites W2091167370 @default.
• W2894762225 cites W2092155943 @default.
• W2894762225 cites W2097202245 @default.
• W2894762225 cites W2117487549 @default.
• W2894762225 cites W2120439176 @default.
• W2894762225 cites W2125283660 @default.
• W2894762225 cites W2134104031 @default.
• W2894762225 cites W2139770286 @default.
• W2894762225 cites W2150058503 @default.
• W2894762225 cites W2151018778 @default.
• W2894762225 cites W2153000470 @default.
• W2894762225 cites W2161839748 @default.
• W2894762225 cites W2165107037 @default.
• W2894762225 cites W2220964083 @default.
• W2894762225 cites W2232897174 @default.
• W2894762225 cites W2251750861 @default.
• W2894762225 cites W2312667414 @default.
• W2894762225 cites W2337599051 @default.
• W2894762225 cites W2345737673 @default.
• W2894762225 cites W2532619846 @default.
• W2894762225 cites W2534704824 @default.
• W2894762225 cites W2561940965 @default.
• W2894762225 cites W2569743028 @default.
• W2894762225 cites W2582325523 @default.
• W2894762225 cites W4234377412 @default.
• W2894762225 cites W4238080741 @default.
• W2894762225 cites W4238660801 @default.
• W2894762225 cites W4243196258 @default.
• W2894762225 cites W4255740889 @default.
• W2894762225 cites W583039854 @default.
• W2894762225 doi "https://doi.org/10.1016/j.oregeorev.2018.09.028" @default.
• W2894762225 hasPublicationYear "2018" @default.
• W2894762225 type Work @default.
• W2894762225 sameAs 2894762225 @default.
• W2894762225 citedByCount "14" @default.
• W2894762225 countsByYear W28947622252020 @default.
• W2894762225 countsByYear W28947622252021 @default.
• W2894762225 countsByYear W28947622252022 @default.
• W2894762225 countsByYear W28947622252023 @default.
• W2894762225 crossrefType "journal-article" @default.
• W2894762225 hasAuthorship W2894762225A5004543427 @default.

• next