Mineral chemistry and formation conditions of argentopentlandite-bearing albite veins in a metagabbro of the Sedova Zaimka intrusion, Russia

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Mineral chemistry and formation conditions of argentopentlandite-bearing albite veins in a metagabbro of the Sedova Zaimka intrusion, Russia. / Svetlitskaya, Tatyana V.; Nevolko, Peter A.

In: Mineralogy and Petrology, Vol. 113, No. 2, 04.04.2019, p. 169-184.

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

BibTeX

@article{ce647dfd2c5e41b192f309756ed2a4ac,

title = "Mineral chemistry and formation conditions of argentopentlandite-bearing albite veins in a metagabbro of the Sedova Zaimka intrusion, Russia",

abstract = "This study presents a new occurrence of hydrothermal argentopentlandite, associated with pyrrhotite, chalcopyrite, sphalerite, and galena in albite (± calcite, muscovite, pyrochlore-group minerals, high-Th phases) veins cutting metagabbro of the Sedova Zaimka intrusion, Western Siberia, Russia. The data obtained from petrography, mineral chemistry and fluid inclusion study of the vein-forming minerals do confirm the proposed hydrothermal origin of sulfides and associated gangue minerals from the internally-derived metamorphic fluids generated during potential post-peak contact metamorphic cooling. These ore-forming fluids were Na-dominant and enriched in Si, Al, Fe, Cu, with minor Ca, K, Ta, Nb, U, Th, Zn, Pb, Ni, Ag, Co, Bi, Te, Se, and Cd. They were characterized by moderate temperatures (270–325 °C) and moderate salinities (4.70–7.25 wt% NaCl equiv.) and belong to the NaCl-H2O fluid system with dominant CH4 gas-phase species. It is concluded that the components (metals and other elements) for the vein infill have been transferred from metagabbro by the metamorphic fluid, possibly in a dissolution–transport–precipitation process.",

keywords = "Albite veins, Argentopentlandite, Fluid inclusions, Metagabbro, Mineral chemistry, Sedova Zaimka, Sulfides, Western Siberia, SYSTEM, CU-FE-S, ASSEMBLAGES, METAMORPHIC ROCKS, PLATINUM-GROUP ELEMENTS, GOLD DEPOSIT, PHASE-RELATIONS, GEOCHEMISTRY, ARGENTIAN-PENTLANDITE, CHALCOPYRITE",

author = "Svetlitskaya, {Tatyana V.} and Nevolko, {Peter A.}",

note = "Publisher Copyright: {\textcopyright} 2019, Springer-Verlag GmbH Austria, part of Springer Nature.",

year = "2019",

month = apr,

day = "4",

doi = "10.1007/s00710-018-0648-x",

language = "English",

volume = "113",

pages = "169--184",

journal = "Mineralogy and Petrology",

issn = "0930-0708",

publisher = "Springer-Verlag GmbH and Co. KG",

number = "2",

}

RIS

TY - JOUR

T1 - Mineral chemistry and formation conditions of argentopentlandite-bearing albite veins in a metagabbro of the Sedova Zaimka intrusion, Russia

AU - Svetlitskaya, Tatyana V.

AU - Nevolko, Peter A.

PY - 2019/4/4

Y1 - 2019/4/4

N2 - This study presents a new occurrence of hydrothermal argentopentlandite, associated with pyrrhotite, chalcopyrite, sphalerite, and galena in albite (± calcite, muscovite, pyrochlore-group minerals, high-Th phases) veins cutting metagabbro of the Sedova Zaimka intrusion, Western Siberia, Russia. The data obtained from petrography, mineral chemistry and fluid inclusion study of the vein-forming minerals do confirm the proposed hydrothermal origin of sulfides and associated gangue minerals from the internally-derived metamorphic fluids generated during potential post-peak contact metamorphic cooling. These ore-forming fluids were Na-dominant and enriched in Si, Al, Fe, Cu, with minor Ca, K, Ta, Nb, U, Th, Zn, Pb, Ni, Ag, Co, Bi, Te, Se, and Cd. They were characterized by moderate temperatures (270–325 °C) and moderate salinities (4.70–7.25 wt% NaCl equiv.) and belong to the NaCl-H2O fluid system with dominant CH4 gas-phase species. It is concluded that the components (metals and other elements) for the vein infill have been transferred from metagabbro by the metamorphic fluid, possibly in a dissolution–transport–precipitation process.

AB - This study presents a new occurrence of hydrothermal argentopentlandite, associated with pyrrhotite, chalcopyrite, sphalerite, and galena in albite (± calcite, muscovite, pyrochlore-group minerals, high-Th phases) veins cutting metagabbro of the Sedova Zaimka intrusion, Western Siberia, Russia. The data obtained from petrography, mineral chemistry and fluid inclusion study of the vein-forming minerals do confirm the proposed hydrothermal origin of sulfides and associated gangue minerals from the internally-derived metamorphic fluids generated during potential post-peak contact metamorphic cooling. These ore-forming fluids were Na-dominant and enriched in Si, Al, Fe, Cu, with minor Ca, K, Ta, Nb, U, Th, Zn, Pb, Ni, Ag, Co, Bi, Te, Se, and Cd. They were characterized by moderate temperatures (270–325 °C) and moderate salinities (4.70–7.25 wt% NaCl equiv.) and belong to the NaCl-H2O fluid system with dominant CH4 gas-phase species. It is concluded that the components (metals and other elements) for the vein infill have been transferred from metagabbro by the metamorphic fluid, possibly in a dissolution–transport–precipitation process.

KW - Albite veins

KW - Argentopentlandite

KW - Fluid inclusions

KW - Metagabbro

KW - Mineral chemistry

KW - Sedova Zaimka

KW - Sulfides

KW - Western Siberia

KW - SYSTEM

KW - CU-FE-S

KW - ASSEMBLAGES

KW - METAMORPHIC ROCKS

KW - PLATINUM-GROUP ELEMENTS

KW - GOLD DEPOSIT

KW - PHASE-RELATIONS

KW - GEOCHEMISTRY

KW - ARGENTIAN-PENTLANDITE

KW - CHALCOPYRITE

UR - http://www.scopus.com/inward/record.url?scp=85059539870&partnerID=8YFLogxK

U2 - 10.1007/s00710-018-0648-x

DO - 10.1007/s00710-018-0648-x

M3 - Article

AN - SCOPUS:85059539870

VL - 113

SP - 169

EP - 184

JO - Mineralogy and Petrology

JF - Mineralogy and Petrology

SN - 0930-0708

IS - 2

ER -

ID: 18070728