A study by electron microscopy of gold and associated minerals from Round Mountain, Nevada.
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| Title: | A study by electron microscopy of gold and associated minerals from Round Mountain, Nevada. |
|---|---|
| Authors: | Burke, Michelle1, Rakovan, John1, Krekeler, Mark P.s.2 krekelmp@miamioh.edu |
| Source: | Ore Geology Reviews. Dec2017, Vol. 91, p708-717. 10p. |
| Subjects: | Electron microscopy, Gold nanoparticles, Microcrystalline polymers, Mineralization |
| Geographic Terms: | Round Mountain (Nye County, Nev. : Mountain) |
| Abstract: | Details regarding the mineralization patterns of gold in epithermal systems are poorly understood. A refined understanding of gold microtextures, the interface between gold and associated minerals, and the role that nanoparticles play in gold mineralization could provide insight into the details of gold growth and may contain indicators of gold ore concentration mechanisms. Furthermore, a refined understanding of the interface also may explain variation in cyanide leaching extraction efficiency and may enable enhancement of recovery methods. Macrocrystalline gold samples from Round Mountain, Nevada were analyzed using field emission scanning electron microscopy and transmission electron microscopy. This study suggests that gold nanoparticles are common in Round Mountain gold and associated mineral phases, and may play an important role in the formation of macrocrystalline gold in this deposit. Microtopographic evidence indicates that the two dimensional nucleation and growth mechanism is dominant and nanotextural evidence suggests that nanoparticulate gold was the first stage of growth in the formation of these macrocrystalline samples that grew rapidly at high degrees of supersaturation. Results suggest that the interface between gold and quartz and other related minerals is far more complex than previously thought, and that textures present at the interface and in the bulk gold can help explain mineralization history and can also have implications for gold recovery efficiency for macrocrystalline bearing ore. [ABSTRACT FROM AUTHOR] |
| Copyright of Ore Geology Reviews is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 126478935 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: A study by electron microscopy of gold and associated minerals from Round Mountain, Nevada. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Burke%2C+Michelle%22">Burke, Michelle</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Rakovan%2C+John%22">Rakovan, John</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Krekeler%2C+Mark+P%2Es%2E%22">Krekeler, Mark P.s.</searchLink><relatesTo>2</relatesTo><i> krekelmp@miamioh.edu</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Ore+Geology+Reviews%22">Ore Geology Reviews</searchLink>. Dec2017, Vol. 91, p708-717. 10p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Electron+microscopy%22">Electron microscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Gold+nanoparticles%22">Gold nanoparticles</searchLink><br /><searchLink fieldCode="DE" term="%22Microcrystalline+polymers%22">Microcrystalline polymers</searchLink><br /><searchLink fieldCode="DE" term="%22Mineralization%22">Mineralization</searchLink> – Name: SubjectGeographic Label: Geographic Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Round+Mountain+%28Nye+County%2C+Nev%2E+%3A+Mountain%29%22">Round Mountain (Nye County, Nev. : Mountain)</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Details regarding the mineralization patterns of gold in epithermal systems are poorly understood. A refined understanding of gold microtextures, the interface between gold and associated minerals, and the role that nanoparticles play in gold mineralization could provide insight into the details of gold growth and may contain indicators of gold ore concentration mechanisms. Furthermore, a refined understanding of the interface also may explain variation in cyanide leaching extraction efficiency and may enable enhancement of recovery methods. Macrocrystalline gold samples from Round Mountain, Nevada were analyzed using field emission scanning electron microscopy and transmission electron microscopy. This study suggests that gold nanoparticles are common in Round Mountain gold and associated mineral phases, and may play an important role in the formation of macrocrystalline gold in this deposit. Microtopographic evidence indicates that the two dimensional nucleation and growth mechanism is dominant and nanotextural evidence suggests that nanoparticulate gold was the first stage of growth in the formation of these macrocrystalline samples that grew rapidly at high degrees of supersaturation. Results suggest that the interface between gold and quartz and other related minerals is far more complex than previously thought, and that textures present at the interface and in the bulk gold can help explain mineralization history and can also have implications for gold recovery efficiency for macrocrystalline bearing ore. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Ore Geology Reviews is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.oregeorev.2017.08.026 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 10 StartPage: 708 Subjects: – SubjectFull: Electron microscopy Type: general – SubjectFull: Gold nanoparticles Type: general – SubjectFull: Microcrystalline polymers Type: general – SubjectFull: Mineralization Type: general – SubjectFull: Round Mountain (Nye County, Nev. : Mountain) Type: general Titles: – TitleFull: A study by electron microscopy of gold and associated minerals from Round Mountain, Nevada. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Burke, Michelle – PersonEntity: Name: NameFull: Rakovan, John – PersonEntity: Name: NameFull: Krekeler, Mark P.s. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 12 Text: Dec2017 Type: published Y: 2017 Identifiers: – Type: issn-print Value: 01691368 Numbering: – Type: volume Value: 91 Titles: – TitleFull: Ore Geology Reviews Type: main |
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