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

Результат исследования: Научные публикации в периодических изданияхстатья по материалам конференции

Аннотация

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.

Язык оригиналаанглийский
Номер статьи08014
Число страниц5
ЖурналE3S Web of Conferences
Том98
DOI
СостояниеОпубликовано - 7 июн 2019
Событие16th International Symposium on Water-Rock Interaction, WRI 2019 and 13th International Symposium on Applied Isotope Geochemistry, 1st IAGC International Conference - Tomsk, Российская Федерация
Продолжительность: 21 июл 201926 июл 2019

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