GENESIS OF NOBLE METAL MINERALIZATION OF THE KOVDOR ALKALINEULTRAMAFIC MASSIF (KOLA PENINSULA)

NATALIA V. SOROKHTINA , SERGEY V. PETROV, A. A. MARTYNOVA, NATALIA N. KONONKOVA, VICTOR A. ZAITSEV, ANTON V. ANTONOV

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Abstract

Abstract. The noble-metal mineralization of the Kovdor massif was studied characterized for the sulfide- bearing
magnetite phoscorites and carbonatites of the middle stage formation. Pyrrhotite, bornite, chalcopyrite and pyrite are the
most common sulphides and apparently the major sources of noble metals. The temperature of bornite-chalcopyritePGE assemblage is close to 400°С, but the pyrrhothite-chalcopyrite-pyrite with Ag-phases is close to 200°С. Minerals
Os, Ru, Pt and Pd are crystallized from sulfide Fe-Ni melt sequentially, the latter platinoids containing Sn, Pb, As, Bi
and Te are formed when redox conditions change, temperature decreases and cu and Fe activity increases in the melt.
Ag phases are formed at the hydrothermal stages during the transformation of Cu-Fe-Ni sulfides. Crystallization of
noble metal minerals is genetically related to the evolution of alkaline-ultrabasic melt and separation of the primary
sulfide melt, enriched with these elements at the carbonatite stage formation of massif.
Translated title of the contributionПроисхождение благороднометальной миненерализации на Ковдорском щелочно-ультраосновном массиве (Кольский полуостров)
Original languageEnglish
Title of host publicationSOFIA INITIATIVE „MINERAL DIVERSITY PRESERVATION”
Subtitle of host publication X International Symposium "Mineral Diversity: Research and Preservation", 14-16 october 2019
Place of PublicationSofia
PublisherEARTH AND MAN NATIONAL MUSEUM
Pages125-133
Number of pages9
StatePublished - 2020
Event X International Symposium "Mineral Diversity: Research and Preservation" - София
Duration: 14 Oct 201916 Oct 2019

Publication series

NameInternational Symposium "Mineral Diversity: Research and Preservation"
ISSN (Print)1313-9231

Conference

Conference X International Symposium "Mineral Diversity: Research and Preservation"
CityСофия
Period14/10/1916/10/19

Scopus subject areas

  • Environmental Science(all)

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