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"Remobilization of Ni–Co–As and platinum-group elements by carbonate metasomatic alteration (listvenitization) of metaultramafic rocks from Dobšiná, Slovakia"

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Research Organisations

External Research Organisations

  • Friedrich Schiller University Jena
  • Comenius University
  • Slovak Academy of Sciences

Details

Original languageEnglish
Article number74
Pages (from-to)139-153
Number of pages15
JournalGeologica Carpathica
Volume74
Issue number2
Publication statusPublished - 23 Apr 2023

Abstract

Hydrothermal processes are mainly responsible for the release and accumulation of metals and metalloids in rocks. In this work, we investigated the mineralogy and geochemistry of altered metaultramafic rocks (listvenites) that are spatially associated with Ni–Co ores near Dobšiná aiming to identify the sources of the elements in the hydrothermal Ni–Co-mineralization. Optical microscopy, electron microprobe analysis, and laser-ablation inductively coupled mass spectrometry were used to correlate the mineralogy with the degree of rock alteration. The sulfides and silicates in the meta-ultramafic rocks host rare, tiny inclusions of cooperite (nominally PtS), sperrylite (PtAs2), Pty–Pd–Ir–Te phase, and Pt–Au–Cr-alloy. The results show that the metaultramafic rocks were the source of Ni and Co and that platinum-group elements (PGE) were also leached and mobilized from the metaultramafic rocks. LA-ICP-MS scans show that the sulfarsenides in the metaultramafic rocks host submicrometer inclusions of PGE minerals but the hydrothermal Ni–Co sulfarsenides contain much less PGE’s. These observations document the limited mobility of the PGE‘s. Changes in the sulfide mineralogy as a function of degree of alteration suggest that the fluids brought Fe and S, and probably a substantial amount of As whereas the metaultramafic rocks supplied Ni, Co, PGE, and perhaps also some As

Keywords

    Dobšiná, geochemistry, hydrothermal processes, metal release, platinum-group elements, sulfarsenides, sulfides

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)
  • Geology

Cite this

"Remobilization of Ni–Co–As and platinum-group elements by carbonate metasomatic alteration (listvenitization) of metaultramafic rocks from Dobšiná, Slovakia". / Kiefer, Stefan; Ivan, Peter; Kaufmann, Andreas B. et al.
In: Geologica Carpathica, Vol. 74, No. 2, 74, 23.04.2023, p. 139-153.

Research output: Contribution to journalArticleResearchpeer review

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@article{620317ba9f414b51a6d914831816d9d0,
title = "{"}Remobilization of Ni–Co–As and platinum-group elements by carbonate metasomatic alteration (listvenitization) of metaultramafic rocks from Dob{\v s}in{\'a}, Slovakia{"}",
abstract = "Hydrothermal processes are mainly responsible for the release and accumulation of metals and metalloids in rocks. In this work, we investigated the mineralogy and geochemistry of altered metaultramafic rocks (listvenites) that are spatially associated with Ni–Co ores near Dob{\v s}in{\'a} aiming to identify the sources of the elements in the hydrothermal Ni–Co-mineralization. Optical microscopy, electron microprobe analysis, and laser-ablation inductively coupled mass spectrometry were used to correlate the mineralogy with the degree of rock alteration. The sulfides and silicates in the meta-ultramafic rocks host rare, tiny inclusions of cooperite (nominally PtS), sperrylite (PtAs2), Pty–Pd–Ir–Te phase, and Pt–Au–Cr-alloy. The results show that the metaultramafic rocks were the source of Ni and Co and that platinum-group elements (PGE) were also leached and mobilized from the metaultramafic rocks. LA-ICP-MS scans show that the sulfarsenides in the metaultramafic rocks host submicrometer inclusions of PGE minerals but the hydrothermal Ni–Co sulfarsenides contain much less PGE{\textquoteright}s. These observations document the limited mobility of the PGE{\textquoteleft}s. Changes in the sulfide mineralogy as a function of degree of alteration suggest that the fluids brought Fe and S, and probably a substantial amount of As whereas the metaultramafic rocks supplied Ni, Co, PGE, and perhaps also some As",
keywords = "Dob{\v s}in{\'a}, geochemistry, hydrothermal processes, metal release, platinum-group elements, sulfarsenides, sulfides",
author = "Stefan Kiefer and Peter Ivan and Kaufmann, {Andreas B.} and Marek V{\v d}a{\v c}n{\'y} and Juraj Majzlan",
year = "2023",
month = apr,
day = "23",
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T1 - "Remobilization of Ni–Co–As and platinum-group elements by carbonate metasomatic alteration (listvenitization) of metaultramafic rocks from Dobšiná, Slovakia"

AU - Kiefer, Stefan

AU - Ivan, Peter

AU - Kaufmann, Andreas B.

AU - Vďačný, Marek

AU - Majzlan, Juraj

PY - 2023/4/23

Y1 - 2023/4/23

N2 - Hydrothermal processes are mainly responsible for the release and accumulation of metals and metalloids in rocks. In this work, we investigated the mineralogy and geochemistry of altered metaultramafic rocks (listvenites) that are spatially associated with Ni–Co ores near Dobšiná aiming to identify the sources of the elements in the hydrothermal Ni–Co-mineralization. Optical microscopy, electron microprobe analysis, and laser-ablation inductively coupled mass spectrometry were used to correlate the mineralogy with the degree of rock alteration. The sulfides and silicates in the meta-ultramafic rocks host rare, tiny inclusions of cooperite (nominally PtS), sperrylite (PtAs2), Pty–Pd–Ir–Te phase, and Pt–Au–Cr-alloy. The results show that the metaultramafic rocks were the source of Ni and Co and that platinum-group elements (PGE) were also leached and mobilized from the metaultramafic rocks. LA-ICP-MS scans show that the sulfarsenides in the metaultramafic rocks host submicrometer inclusions of PGE minerals but the hydrothermal Ni–Co sulfarsenides contain much less PGE’s. These observations document the limited mobility of the PGE‘s. Changes in the sulfide mineralogy as a function of degree of alteration suggest that the fluids brought Fe and S, and probably a substantial amount of As whereas the metaultramafic rocks supplied Ni, Co, PGE, and perhaps also some As

AB - Hydrothermal processes are mainly responsible for the release and accumulation of metals and metalloids in rocks. In this work, we investigated the mineralogy and geochemistry of altered metaultramafic rocks (listvenites) that are spatially associated with Ni–Co ores near Dobšiná aiming to identify the sources of the elements in the hydrothermal Ni–Co-mineralization. Optical microscopy, electron microprobe analysis, and laser-ablation inductively coupled mass spectrometry were used to correlate the mineralogy with the degree of rock alteration. The sulfides and silicates in the meta-ultramafic rocks host rare, tiny inclusions of cooperite (nominally PtS), sperrylite (PtAs2), Pty–Pd–Ir–Te phase, and Pt–Au–Cr-alloy. The results show that the metaultramafic rocks were the source of Ni and Co and that platinum-group elements (PGE) were also leached and mobilized from the metaultramafic rocks. LA-ICP-MS scans show that the sulfarsenides in the metaultramafic rocks host submicrometer inclusions of PGE minerals but the hydrothermal Ni–Co sulfarsenides contain much less PGE’s. These observations document the limited mobility of the PGE‘s. Changes in the sulfide mineralogy as a function of degree of alteration suggest that the fluids brought Fe and S, and probably a substantial amount of As whereas the metaultramafic rocks supplied Ni, Co, PGE, and perhaps also some As

KW - Dobšiná

KW - geochemistry

KW - hydrothermal processes

KW - metal release

KW - platinum-group elements

KW - sulfarsenides

KW - sulfides

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U2 - 10.31577/GeolCarp.2023.10

DO - 10.31577/GeolCarp.2023.10

M3 - Article

VL - 74

SP - 139

EP - 153

JO - Geologica Carpathica

JF - Geologica Carpathica

SN - 0016-7738

IS - 2

M1 - 74

ER -

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