The hyper-enrichment of silver through the aggregation of silver sulfide nanoparticles

Abstract Silver deposits have long been considered to form due to the direct precipitation of silver minerals from aqueous fluids, in which the metal is transported as chloride and/or bisulfide complexes. Ultra-high-grade silver ores have silver contents up to tens of weight-percent in the form of s...

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Main Authors: Mingchun Chai, Anthony E. Williams-Jones, Wei Fu, Jianwei Li, Cheng Xu
Format: Article
Language:English
Published: Nature Portfolio 2024-11-01
Series:Nature Communications
Online Access:https://doi.org/10.1038/s41467-024-54726-9
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author Mingchun Chai
Anthony E. Williams-Jones
Wei Fu
Jianwei Li
Cheng Xu
author_facet Mingchun Chai
Anthony E. Williams-Jones
Wei Fu
Jianwei Li
Cheng Xu
author_sort Mingchun Chai
collection DOAJ
description Abstract Silver deposits have long been considered to form due to the direct precipitation of silver minerals from aqueous fluids, in which the metal is transported as chloride and/or bisulfide complexes. Ultra-high-grade silver ores have silver contents up to tens of weight-percent in the form of silver sulfides and native silver. Ore-forming fluids of most silver deposits, however, typically contain low silver contents of parts per million silver. The challenge is to explain how fluids with such low concentrations of silver can form ultra-high-grade silver ores. Here, we present direct mineralogical evidence from natural samples showing that the high-grade silver ores form from the aggregation of silver sulfide nanoparticles through intermediate microparticles and dendrites to acanthite crystals. Native silver grows from silver sulfides via solid-state silver ion aggregation. This study traces the formation of silver sulfides from their nanoparticulate precursors, thereby providing insights into the genesis of ultra-high-grade silver ores in a variety of metallogenic settings.
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spelling doaj-art-43a5300897f14223aa06bc13cf7e822d2024-12-01T12:33:26ZengNature PortfolioNature Communications2041-17232024-11-011511710.1038/s41467-024-54726-9The hyper-enrichment of silver through the aggregation of silver sulfide nanoparticlesMingchun Chai0Anthony E. Williams-Jones1Wei Fu2Jianwei Li3Cheng Xu4College of Earth Sciences, Guilin University of TechnologyDepartment of Earth and Planetary Sciences, McGill UniversityCollege of Earth Sciences, Guilin University of TechnologyState Key Laboratory of Geological Processes and Mineral Resources, China University of GeosciencesCollege of Earth Sciences, Guilin University of TechnologyAbstract Silver deposits have long been considered to form due to the direct precipitation of silver minerals from aqueous fluids, in which the metal is transported as chloride and/or bisulfide complexes. Ultra-high-grade silver ores have silver contents up to tens of weight-percent in the form of silver sulfides and native silver. Ore-forming fluids of most silver deposits, however, typically contain low silver contents of parts per million silver. The challenge is to explain how fluids with such low concentrations of silver can form ultra-high-grade silver ores. Here, we present direct mineralogical evidence from natural samples showing that the high-grade silver ores form from the aggregation of silver sulfide nanoparticles through intermediate microparticles and dendrites to acanthite crystals. Native silver grows from silver sulfides via solid-state silver ion aggregation. This study traces the formation of silver sulfides from their nanoparticulate precursors, thereby providing insights into the genesis of ultra-high-grade silver ores in a variety of metallogenic settings.https://doi.org/10.1038/s41467-024-54726-9
spellingShingle Mingchun Chai
Anthony E. Williams-Jones
Wei Fu
Jianwei Li
Cheng Xu
The hyper-enrichment of silver through the aggregation of silver sulfide nanoparticles
Nature Communications
title The hyper-enrichment of silver through the aggregation of silver sulfide nanoparticles
title_full The hyper-enrichment of silver through the aggregation of silver sulfide nanoparticles
title_fullStr The hyper-enrichment of silver through the aggregation of silver sulfide nanoparticles
title_full_unstemmed The hyper-enrichment of silver through the aggregation of silver sulfide nanoparticles
title_short The hyper-enrichment of silver through the aggregation of silver sulfide nanoparticles
title_sort hyper enrichment of silver through the aggregation of silver sulfide nanoparticles
url https://doi.org/10.1038/s41467-024-54726-9
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