Nanoparticle suspensions from carbon-rich fluid make high-grade gold deposits
Economic gold deposits result from a 100- to 10,000-fold enrichment in gold relative to crustal background. In hydrothermal systems, this enrichment is achieved through the transport and accumulation of metals via deeply sourced fluids to a site of deposition. However, the generally low metal solubi...
| Main Authors: | , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
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NATURE PORTFOLIO
2022
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| Subjects: | |
| Online Access: | http://purl.org/au-research/grants/arc/LP200200897 http://hdl.handle.net/20.500.11937/90056 |
| _version_ | 1848765321441181696 |
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| author | Petrella, L. Thébaud, N. Fougerouse, Denis Tattitch, B. Martin, L. Turner, S. Suvorova, A. Gain, S. |
| author_facet | Petrella, L. Thébaud, N. Fougerouse, Denis Tattitch, B. Martin, L. Turner, S. Suvorova, A. Gain, S. |
| author_sort | Petrella, L. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Economic gold deposits result from a 100- to 10,000-fold enrichment in gold relative to crustal background. In hydrothermal systems, this enrichment is achieved through the transport and accumulation of metals via deeply sourced fluids to a site of deposition. However, the generally low metal solubility of Au in aqueous solutions in orogenic systems requires additional processes in order to explain high-grade gold formation. Reports of Au nanoparticles in high-grade gold veins infer that their formation is linked to mineralisation. However, processes leading to nanoparticle nucleation and deposition remain poorly understood. Here we show that formation of metal nanoparticles (Au, AuAg, Cu, Ag2O) is one of the essential contributors to efficient and focused gold deposition. We report systematic and previously unrecognized metal nanoparticles preserved in amorphous silica and/or carbonic phases in five high-grade deposits. The association of metal, silica and carbonic phases helps to constrain the multiple reactive processes involved in Au, Cu and Ag metallogenesis and formation of high-grade gold mineralisation. |
| first_indexed | 2025-11-14T11:33:24Z |
| format | Journal Article |
| id | curtin-20.500.11937-90056 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:33:24Z |
| publishDate | 2022 |
| publisher | NATURE PORTFOLIO |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-900562023-02-08T07:24:52Z Nanoparticle suspensions from carbon-rich fluid make high-grade gold deposits Petrella, L. Thébaud, N. Fougerouse, Denis Tattitch, B. Martin, L. Turner, S. Suvorova, A. Gain, S. Science & Technology Multidisciplinary Sciences Science & Technology - Other Topics U-PB GEOCHRONOLOGY SLEEPER DEPOSIT YILGARN CRATON RED LAKE MINERALIZATION SILICA MINE TRANSPORT YELLOWKNIFE DISTRICT Economic gold deposits result from a 100- to 10,000-fold enrichment in gold relative to crustal background. In hydrothermal systems, this enrichment is achieved through the transport and accumulation of metals via deeply sourced fluids to a site of deposition. However, the generally low metal solubility of Au in aqueous solutions in orogenic systems requires additional processes in order to explain high-grade gold formation. Reports of Au nanoparticles in high-grade gold veins infer that their formation is linked to mineralisation. However, processes leading to nanoparticle nucleation and deposition remain poorly understood. Here we show that formation of metal nanoparticles (Au, AuAg, Cu, Ag2O) is one of the essential contributors to efficient and focused gold deposition. We report systematic and previously unrecognized metal nanoparticles preserved in amorphous silica and/or carbonic phases in five high-grade deposits. The association of metal, silica and carbonic phases helps to constrain the multiple reactive processes involved in Au, Cu and Ag metallogenesis and formation of high-grade gold mineralisation. 2022 Journal Article http://hdl.handle.net/20.500.11937/90056 10.1038/s41467-022-31447-5 English http://purl.org/au-research/grants/arc/LP200200897 http://purl.org/au-research/grants/arc/DE190101307 http://creativecommons.org/licenses/by/4.0/ NATURE PORTFOLIO fulltext |
| spellingShingle | Science & Technology Multidisciplinary Sciences Science & Technology - Other Topics U-PB GEOCHRONOLOGY SLEEPER DEPOSIT YILGARN CRATON RED LAKE MINERALIZATION SILICA MINE TRANSPORT YELLOWKNIFE DISTRICT Petrella, L. Thébaud, N. Fougerouse, Denis Tattitch, B. Martin, L. Turner, S. Suvorova, A. Gain, S. Nanoparticle suspensions from carbon-rich fluid make high-grade gold deposits |
| title | Nanoparticle suspensions from carbon-rich fluid make high-grade gold deposits |
| title_full | Nanoparticle suspensions from carbon-rich fluid make high-grade gold deposits |
| title_fullStr | Nanoparticle suspensions from carbon-rich fluid make high-grade gold deposits |
| title_full_unstemmed | Nanoparticle suspensions from carbon-rich fluid make high-grade gold deposits |
| title_short | Nanoparticle suspensions from carbon-rich fluid make high-grade gold deposits |
| title_sort | nanoparticle suspensions from carbon-rich fluid make high-grade gold deposits |
| topic | Science & Technology Multidisciplinary Sciences Science & Technology - Other Topics U-PB GEOCHRONOLOGY SLEEPER DEPOSIT YILGARN CRATON RED LAKE MINERALIZATION SILICA MINE TRANSPORT YELLOWKNIFE DISTRICT |
| url | http://purl.org/au-research/grants/arc/LP200200897 http://purl.org/au-research/grants/arc/LP200200897 http://hdl.handle.net/20.500.11937/90056 |