Metamorphosed and Hydrothermal Carbonaceous Matter at the Orogenic-Type, Sediment-Hosted Gold Deposits of West Africa
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985891%3A_____%2F15%3A00472936" target="_blank" >RIV/67985891:_____/15:00472936 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11310/15:10331671
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Metamorphosed and Hydrothermal Carbonaceous Matter at the Orogenic-Type, Sediment-Hosted Gold Deposits of West Africa
Original language description
Chemical and physical properties of carbonaceous matter (CM) at Paleoproterozoic, shear zone-hosted gold deposits in Burkina Faso (the Inata deposit), Mali (the Syama deposit) and Ghana (the Obuashi and Bogoso deposits) were studied. Two types of CM are present at all studied deposits: metamorphosed and hydrothermal. Hydrothermal CM is commonly associated with gold mineralization. It forms veinlets in hydrothermally altered rocks and quartz veins, or irregular accumulations parallel or subparallel to C-type cleavage within shear zones. The isotopic composition of carbon in metamorphosed as well as hydrothermal CM (-26.2 to-33.1%o; PDB) indicates their biogenic origin. Optical properties, XRD and Raman spectra of metamorphosed and hydrothermal CM within a single deposit are similar. However, the degree of structural ordering and optical properties of CM vary at the individual studied deposits, depending on the metamorphic degree of ambient rocks. This suggests a close relationship between metamorphic temperatures and temperatures of hydrothermal fluids.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
DB - Geology and mineralogy
OECD FORD branch
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Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Mineral resources in a sustainable world. Proceedings of the 13th Biennial SGA Meeting
ISBN
978-2-85555-066-4
ISSN
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e-ISSN
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Number of pages
4
Pages from-to
1941-1944
Publisher name
ASGA
Place of publication
Vandoeuvre-les-Nancy
Event location
Nancy
Event date
Aug 24, 2015
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000374801300444