scholarly journals The formation conditions of enstatite chondrites: Insights from trace element geochemistry of olivine-bearing chondrules in Sahara 97096 (EH3)

2015 ◽  
Vol 50 (9) ◽  
pp. 1624-1642 ◽  
Author(s):  
Emmanuel Jacquet ◽  
Olivier Alard ◽  
Matthieu Gounelle
Keyword(s):  
Trace Element ◽  
Trace Element Geochemistry ◽  
Element Geochemistry ◽  
Formation Conditions ◽  
Enstatite Chondrites

scholarly journals Trace Element Geochemistry of Sulfides from the Ashadze-2 Hydrothermal Field (12°58′ N, Mid-Atlantic Ridge): Influence of Host Rocks, Formation Conditions or Seawater?

Minerals ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 743 ◽  
Author(s):  
Irina Melekestseva ◽  
Valery Maslennikov ◽  
Gennady Tret’yakov ◽  
Svetlana Maslennikova ◽  
Leonid Danyushevsky ◽  
...  
Keyword(s):  
Trace Element ◽  
Native Gold ◽  
Hydrothermal Field ◽  
Trace Element Geochemistry ◽  
Local Formation ◽  
Element Geochemistry ◽  
Icp Ms ◽  
Mid Atlantic Ridge ◽  
Formation Conditions ◽  
Host Rocks

The trace element (TS) composition of isocubanite, chalcopyrite, pyrite, bornite, and covellite from oxidized Cu-rich massive sulfides of the Ashadze-2 hydrothermal field (12°58′ N, Mid-Atlantic Ridge) is studied using LA-ICP-MS. The understanding of TE behavior, which depends on the formation conditions and the mode of TE occurrence, in sulfides is important, since they are potential sources for byproduct TEs. Isocubanite has the highest Co contents). Chalcopyrite concentrates most Au. Bornite has the highest amounts of Se, Sn, and Te. Crystalline pyrite is a main carrier of Mn. Covellite after isocubanite is a host to the highest Sr, Ag, and Bi contents. Covellite after pyrite accumulates V, Ga and In. The isocubanite+chalcopyrite aggregates in altered gabrro contain the highest amounts of Ni, Zn, As, Mo, Cd, Sb (166 ppm), Tl, and Pb. The trace element geochemistry of sulfides is mainly controlled by local formation conditions. Submarine oxidation results in the formation of covellite and its enrichment in most trace elements relative to primary sulfides. This is a result of incorporation of seawater-derived elements and seawater-affected dissolution of accessory minerals (native gold, galena and clausthalite).

REGIONAL TRACE ELEMENT GEOCHEMISTRY OF ZIRCONS IN THE JURASSIC VOLCANIC ARC OF THE SOUTHWEST U.S

2016 ◽  
Author(s):  
Jennifer A. Laughlin ◽  
◽  
Joseph L. Wooden ◽  
A.P. Barth ◽  
John T. Shukle ◽  
...  
Keyword(s):  
Trace Element ◽  
Trace Element Geochemistry ◽  
Element Geochemistry ◽  
Volcanic Arc

PATTERNS OF TRACE ELEMENT GEOCHEMISTRY IN CULTURED NEOGLOBOQUADRINA PACHYDERMA CRUST CALCITE

2020 ◽  
Author(s):  
Caitlin M. Livsey ◽  
◽  
Catherine V. Davis ◽  
Jennifer S. Fehrenbacher ◽  
Claudia Benitez-Nelson ◽  
...  
Keyword(s):  
Trace Element ◽  
Trace Element Geochemistry ◽  
Element Geochemistry ◽  
Neogloboquadrina Pachyderma
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