LA-ICP-MS study of sulfide blebs from a gabbroid intrusion in North-Western Mongolia

Maria Cherdantseva, Andrey Vishnevskiy, Pedro Jugo

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

Abstract

The Devonian Rudniy intrusion located on the Tsagaan-Shuvuut ridge (NW Mongoliaiss) is the only one of the numerous small gabbroid intrusions surrounding the Tuva depression known to contain magmatic sulfide Ni-Cu-PGE mineralization. The sulfide mineralization is confined to a prolonged narrow ultramafic horizon as disseminated blebs, which are zoned and composed of pyrrhotite, pentlandite, chalcopyrite and cubanite. The intrusion is of interest because it is a small body that solidified quickly and therefore the sulfide blebs are interpreted to keep a record of the geochemical behaviour of chalcophile elements from the crystallization of a sulfide melt in a closed system. Using LA-ICP-MS and ICP-MS analyses the concentrations of chalcophile and platinum group elements in the base metal sulfides (BMS) were measured. This allowed us to calculate partition coefficients and mass balances of PGEs in base metal sulfides.

Original languageEnglish
Title of host publicationLIFE WITH ORE DEPOSITS ON EARTH, PROCEEDINGS OF THE 15TH SGA BIENNIAL MEETING, 2019, VOLS 1-4
PublisherSOC GEOLOGY APPLIED MINERAL DEPOSITS-SGA
Pages601-604
Number of pages4
Publication statusPublished - 2019
Event15th SGA Biennial Meeting on Life with Ore Deposits on Earth - Glasgow
Duration: 27 Aug 201930 Aug 2019

Conference

Conference15th SGA Biennial Meeting on Life with Ore Deposits on Earth
CityGlasgow
Period27.08.201930.08.2019

Keywords

  • PLATINUM-GROUP-ELEMENTS
  • LASER-ABLATION
  • MINERALS
  • DROPLETS
  • BEHAVIOR
  • NORILSK
  • ORIGIN

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