Chemical and Os-isotopic composition of Ru–Os sulfides from the Verkh-Neivinsky dunite-harzburgite massif (Middle Urals, Russia)

K. N. Malitch; I. Yu Badanina; E. A. Belousova; V. V. Murzin

doi:10.1134/S1028334X18110119

Chemical and Os-isotopic composition of Ru–Os sulfides from the Verkh-Neivinsky dunite-harzburgite massif (Middle Urals, Russia)

K. N. Malitch^*, I. Yu Badanina, E. A. Belousova, V. V. Murzin

^*Corresponding author for this work

ARC Centre of Excellence for Core to Crust Fluid Systems (incorporation ARC National Key Centre for Geochemical evolution and Metallogeny of Continents (GEMOC))

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

This study presents new chemical and isotope data for Ru–Os sulfides and coexisting platinum-group minerals (PGMs) within primary assemblage derived from the Verkh-Neivinsky dunite-harzburgite massif. PGMs were studied using electron microprobe analysis, laser ablation and multiple collector-inductively coupled plasma-mass spectrometry. The obtained results are consistent with: (i) high-temperature formation of Ru–Os sulfides and coexisting Os-bearing alloys, (ii) presence of two contrasting sources in the ore formation (i.e., subchondritic and suprachondritic), (iii) resemblance of the initial Os-isotope composition in coexisting laurite and Os-bearing alloy, (iv) significant Os-isotope variations in individual PGMs from the primary assemblage, and (v) potential of using model ¹⁸⁷Os/¹⁸⁸Os ages of PGMs for geodynamic paleoreconstructions.

Original language	English
Pages (from-to)	1437-1441
Number of pages	5
Journal	Doklady Earth Sciences
Volume	483
Issue number	1
DOIs	https://doi.org/10.1134/S1028334X18110119
Publication status	Published - Dec 2018

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title = "Chemical and Os-isotopic composition of Ru–Os sulfides from the Verkh-Neivinsky dunite-harzburgite massif (Middle Urals, Russia)",

abstract = "This study presents new chemical and isotope data for Ru–Os sulfides and coexisting platinum-group minerals (PGMs) within primary assemblage derived from the Verkh-Neivinsky dunite-harzburgite massif. PGMs were studied using electron microprobe analysis, laser ablation and multiple collector-inductively coupled plasma-mass spectrometry. The obtained results are consistent with: (i) high-temperature formation of Ru–Os sulfides and coexisting Os-bearing alloys, (ii) presence of two contrasting sources in the ore formation (i.e., subchondritic and suprachondritic), (iii) resemblance of the initial Os-isotope composition in coexisting laurite and Os-bearing alloy, (iv) significant Os-isotope variations in individual PGMs from the primary assemblage, and (v) potential of using model 187Os/188Os ages of PGMs for geodynamic paleoreconstructions.",

author = "Malitch, {K. N.} and Badanina, {I. Yu} and Belousova, {E. A.} and Murzin, {V. V.}",

year = "2018",

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journal = "Doklady Earth Sciences",

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T1 - Chemical and Os-isotopic composition of Ru–Os sulfides from the Verkh-Neivinsky dunite-harzburgite massif (Middle Urals, Russia)

AU - Malitch, K. N.

AU - Badanina, I. Yu

AU - Belousova, E. A.

AU - Murzin, V. V.

PY - 2018/12

Y1 - 2018/12

N2 - This study presents new chemical and isotope data for Ru–Os sulfides and coexisting platinum-group minerals (PGMs) within primary assemblage derived from the Verkh-Neivinsky dunite-harzburgite massif. PGMs were studied using electron microprobe analysis, laser ablation and multiple collector-inductively coupled plasma-mass spectrometry. The obtained results are consistent with: (i) high-temperature formation of Ru–Os sulfides and coexisting Os-bearing alloys, (ii) presence of two contrasting sources in the ore formation (i.e., subchondritic and suprachondritic), (iii) resemblance of the initial Os-isotope composition in coexisting laurite and Os-bearing alloy, (iv) significant Os-isotope variations in individual PGMs from the primary assemblage, and (v) potential of using model 187Os/188Os ages of PGMs for geodynamic paleoreconstructions.

AB - This study presents new chemical and isotope data for Ru–Os sulfides and coexisting platinum-group minerals (PGMs) within primary assemblage derived from the Verkh-Neivinsky dunite-harzburgite massif. PGMs were studied using electron microprobe analysis, laser ablation and multiple collector-inductively coupled plasma-mass spectrometry. The obtained results are consistent with: (i) high-temperature formation of Ru–Os sulfides and coexisting Os-bearing alloys, (ii) presence of two contrasting sources in the ore formation (i.e., subchondritic and suprachondritic), (iii) resemblance of the initial Os-isotope composition in coexisting laurite and Os-bearing alloy, (iv) significant Os-isotope variations in individual PGMs from the primary assemblage, and (v) potential of using model 187Os/188Os ages of PGMs for geodynamic paleoreconstructions.

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Chemical and Os-isotopic composition of Ru–Os sulfides from the Verkh-Neivinsky dunite-harzburgite massif (Middle Urals, Russia)

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