Hydrothermal remobilization platinum group elements and their secondary minerals in chromitite deposits of the Eastern Sayan ophiolites (Russia)

Ol'Ga Kiseleva, Evgeniya Airiyants, Dmytriy Belyanin, Sergey Zhmodik

Research output: Contribution to journalConference articlepeer-review

Abstract

Serpentinization is an important post-magmatic process in spreading and subducted zones. This process is the cause of the remobilization and redistribution of highly mobile elements, platinum group elements (PGE) and base metals. Secondary platinum group minerals (PGMs) formed because of PGE remobilization under the action of mantle and crustal fluid on the rocks. The formation of the secondary PGMs can occur in several stages. Under the effect on the chromitites of reduced mantle fluids, native PGE alloys were formed during early serpentinization. Under dehydrating subducted slab fluid phase was caused in serpentinization mantle peridotites and have been dissolved magmatic high-temperature platinum group minerals. During the obduction of ophiolites, an inversion from reducing to oxidizing condition took place with the formation of nickel arsenides and As, Sb - bearing PGMs.

Original languageEnglish
Article number08014
Number of pages5
JournalE3S Web of Conferences
Volume98
DOIs
Publication statusPublished - 7 Jun 2019
Event16th International Symposium on Water-Rock Interaction, WRI 2019 and 13th International Symposium on Applied Isotope Geochemistry, 1st IAGC International Conference - Tomsk, Russian Federation
Duration: 21 Jul 201926 Jul 2019

Keywords

  • PGE MINERALIZATION
  • COMPLEX
  • ALLOYS
  • IR
  • OS

Fingerprint

Dive into the research topics of 'Hydrothermal remobilization platinum group elements and their secondary minerals in chromitite deposits of the Eastern Sayan ophiolites (Russia)'. Together they form a unique fingerprint.

Cite this