Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
REE geochemical characteristics and satellite-based mapping of hydrothermal alteration in Atud gold deposit, Egypt
Geological Engineering Department, Faculty of Mines, Istanbul Technical University. Geology Department, Faculty of Science, Benha University, Benha.
Geological Engineering Department, Faculty of Mines, Istanbul Technical University.
Geology Department, Faculty of Science, Benha University, Benaha.
Geological Engineering Department, Faculty of Mines, Istanbul Technical University.
Visa övriga samt affilieringar
2018 (Engelska)Ingår i: Journal of African Earth Sciences, ISSN 0899-5362, Vol. 145, s. 317-330Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

New geochemical data of the hydrothermal alteration zones associated with gold-bearing quartz veins at Atud mine are used for better understanding the ore evolution and exploration vectoring. ASTER and Landsat 8 OLI data are used to elucidate the distribution of gold-associated alteration zones. Three alteration zones are defined; zone 1 (sericite-kaolinite-quartz-pyrite), zone 2 (quartz-sericite-albite-pyrite), and zone 3 (chlorite-carbonate-epidote ± pyrite). Sericite and hydrothermal quartz are confined to the mineralized quartz veins. Fe-OH and OH-bearing minerals are observed along NW- and NE-trending shear zones in the Main Atud mine. The association of gold-bearing quartz veins and sericite alteration is constrained by processing ASTER- and OLI-imagery data. The geochemical data of the ore-enveloping hydrothermally altered rocks are used to assess the behavior of the REEs during the mineralization process. Mild enrichment in LREE and significant enrichment in the HREE are associated with sericite in zones (1) and (2) alterations. Carbonate alteration (zone 3) is enriched in LREE and in immobile HREE. Moreover, LREE and Eu anomalies have negative correlated with the Alteration Index (A.I.) and K2O index (K.I.) in zones 1 and 2, suggesting high mobility of LREE in K-rich hydrothermal fluids. On the other hand, HREE anomalies with increasing MgO index (M.I.) in alteration zone 3 may imply low solubility of these elements in alkaline solutions. Au anomalies linked to sericite/silica alteration is a rather meaningful vector for further exploration in the area.

Ort, förlag, år, upplaga, sidor
Elsevier, 2018. Vol. 145, s. 317-330
Nationell ämneskategori
Geologi
Forskningsämne
Malmgeologi
Identifikatorer
URN: urn:nbn:se:ltu:diva-67608DOI: 10.1016/j.jafrearsci.2018.01.013ISI: 000439403600025Scopus ID: 2-s2.0-85041926005OAI: oai:DiVA.org:ltu-67608DiVA, id: diva2:1182041
Anmärkning

Validerad;2018;Nivå 2;2018-07-23 (inah)

Tillgänglig från: 2018-02-12 Skapad: 2018-02-12 Senast uppdaterad: 2019-03-27Bibliografiskt granskad

Open Access i DiVA

Fulltext saknas i DiVA

Övriga länkar

Förlagets fulltextScopus

Personposter BETA

Weihed, Pär

Sök vidare i DiVA

Av författaren/redaktören
Weihed, Pär
Av organisationen
Geovetenskap och miljöteknik
I samma tidskrift
Journal of African Earth Sciences
Geologi

Sök vidare utanför DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetricpoäng

doi
urn-nbn
Totalt: 740 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf