Platinum-Group Elements and Gold in Base Metal Sulfides, Platinum-Group Minerals, and Re-Os Isotope Compositions of the Uitkomst Complex, South Africa
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F18%3A00000145" target="_blank" >RIV/00025798:_____/18:00000145 - isvavai.cz</a>
Alternative codes found
RIV/67985831:_____/18:00488682 RIV/00216208:11310/18:10376690
Result on the web
<a href="http://dx.doi.org/10.5382/econgeo.2018.4557" target="_blank" >http://dx.doi.org/10.5382/econgeo.2018.4557</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.5382/econgeo.2018.4557" target="_blank" >10.5382/econgeo.2018.4557</a>
Alternative languages
Result language
angličtina
Original language name
Platinum-Group Elements and Gold in Base Metal Sulfides, Platinum-Group Minerals, and Re-Os Isotope Compositions of the Uitkomst Complex, South Africa
Original language description
The Uitkomst Complex is a Ni-Cu-PGE-Cr-Co mineralized composite mafic-ultramafic intrusion situated in South Africa. The platinum-group elements (PGEs), Re and Au contents in base metal sulfides (BMS), and Re-Os isotope compositions were determined, as well as the occurrence of associated platinum-group minerals (PGMs) in the various mineralized zones of the complex. BMS within the complex have elevated PGE and Au contents, with the highest values (average of ~10 ppm total PGE) for the massive sulfide body, much lower than the values for BMS from the nearby Bushveld Complex. Pentlandite, as major PGE carrier, hosts most of the Pd, whereas pyrrhotite is characterized by elevated iridium subgroup platinum-group element (IPGE; Os, Ir, Ru) content lacking Pd. Chalcopyrite occasionally serves as a carrier of Au. Minor pyrite concentrates Rh and Re. Mass balance calculations show that BMS play a crucial role in IPGE deportment, whereas they accommodate only up to ~60percent of the total Pd. The initial 187Os/188Os values for the whole Uitkomst suite indicate a significant but variable contribution of crustal material to mantle-derived parental melts. Platinum-group elements forming inclusions or presented in solid solution within BMS appear to contribute less to the overall PGE grade than the associated PGMs. The data support the model of a sulfide-oversaturated Uitkomst magma forming a monosulfide solid solution (mss) cumulate as massive sulfide orebody under low-R factor conditions in a shallow conduit after escape of an evolved PGE-rich sulfide liquid from the chamber, leaving the mss relatively poor in PGEs.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10505 - Geology
Result continuities
Project
<a href="/en/project/GA13-15390S" target="_blank" >GA13-15390S: Re-Os geochronology of ore mineralizations from the Bohemian Massif with possible metallogenic implications</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Economic Geology
ISSN
0361-0128
e-ISSN
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Volume of the periodical
113
Issue of the periodical within the volume
2
Country of publishing house
US - UNITED STATES
Number of pages
24
Pages from-to
439-461
UT code for WoS article
000429317200006
EID of the result in the Scopus database
2-s2.0-85043366492