First find of nephrite with accessory minerals of the platinum group

The relic minerals of the platinum group (MPG) were found for the first time in nephrite of tremolite–diopside composition associated genetically with the boninite dike of the Gorlyk-Gol deposit. This latter is confined to a segment of the zone of serpentinite mélange in the southern part of the Osp...

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Bibliographic Details
Published in:Doklady earth sciences 2017-03, Vol.473 (1), p.329-332
Main Authors: Tatarinov, A. V., Yalovik, L. I., Kanakin, S. V., Zyablitsev, A. Yu
Format: Article
Language:English
Subjects:
Chromium
Chromium (Metal)
Earth and Environmental Science
Earth Sciences
Geochemistry
Minerals
Ophiolites
Platinum
Platinum group compounds
Ruthenium
Serpentinite
Spinel group
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Summary:The relic minerals of the platinum group (MPG) were found for the first time in nephrite of tremolite–diopside composition associated genetically with the boninite dike of the Gorlyk-Gol deposit. This latter is confined to a segment of the zone of serpentinite mélange in the southern part of the Ospinsko–Kitoi ultrabasite massif in the East Sayan ophiolite belt. The micro- and nanophases of MPG were identified: rutheniridosmine with Ni and Fe admixtures, ruthenium, rutheniridium, iridoarsenite, omeiite, and laurite. The MPG sources are chromium spinels from harzburgites and dunites of the Ospinsko–Kitoi massif subjected to deforming transformations in the zone of the serpentinite mélange.
ISSN:1028-334X
1531-8354
DOI:10.1134/S1028334X17030175