Microporous gold: Comparison of textures from nature and experiments
Recent experiments have shown that microporous gold can be obtained via the oxidative dealloying of Au(Ag)-tellurides such as calaverite (AuTe 2 ), krennerite (Au 3 AgTe 8 ), and sylvanite [(Au,Ag) 2 Te 4 ] under mild hydrothermal conditions. The same Au textures have been found in natural gold-tell...
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Walter de Gruyter GmbH
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Online Access: | http://hdl.handle.net/2440/93860 https://doi.org/10.2138/am.2014.4792 |
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ftunivadelaidedl:oai:digital.library.adelaide.edu.au:2440/93860 2023-12-24T10:18:11+01:00 Microporous gold: Comparison of textures from nature and experiments Okrugin, V. Andreeva, E. Etschmann, B. Pring, A. Li, K. Zhao, J. Griffiths, G. Lumpkin, G. Triani, G. Brugger, J. 2014 http://hdl.handle.net/2440/93860 https://doi.org/10.2138/am.2014.4792 en eng Walter de Gruyter GmbH http://purl.org/au-research/grants/arc/DP1095069 American Mineralogist: an international journal of earth and planetary materials, 2014; 99(5-6):1171-1174 0003-004X 1945-3027 http://hdl.handle.net/2440/93860 doi:10.2138/am.2014.4792 © 2014 Mineralogical Society of America http://dx.doi.org/10.2138/am.2014.4792 Microporous gold gold tellurides micro-textures epithermal deposit Journal article 2014 ftunivadelaidedl https://doi.org/10.2138/am.2014.4792 2023-11-27T23:26:12Z Recent experiments have shown that microporous gold can be obtained via the oxidative dealloying of Au(Ag)-tellurides such as calaverite (AuTe 2 ), krennerite (Au 3 AgTe 8 ), and sylvanite [(Au,Ag) 2 Te 4 ] under mild hydrothermal conditions. The same Au textures have been found in natural gold-telluride ores from the Late Miocene epithermal Aginskoe Au-Ag-Te deposit in Kamchatka, Russia. This confirms that natural microporous gold can form via the replacement of telluride minerals. This replacement may take place under hydrothermal conditions, e.g., during the late stage of the ore-depositing event, explaining the wide distribution of “mustard gold” in some deposits. At Aginskoe, the oxidation of Au-tellurides appears to have resulted only in local redistribution of Au and Te, because the associated oxidation of chalcopyrite scavenged the excess Te, inhibiting the crystallization of secondary Te minerals more than a few micrometers in size. Such cryptic mobility may explain the lack of reported secondary Te minerals in many Te-bearing deposits. Victor M. Okrugin, Elena Andreeva, Barbara Etschmann, Allan Pring, Kan Li, Jing Zhao, Grant Griffiths, Gregory R. Lumpkin, Gerry Triani, and Joël Brugger Article in Journal/Newspaper Kamchatka The University of Adelaide: Digital Library Andreeva ENVELOPE(155.200,155.200,-68.917,-68.917) American Mineralogist 99 5-6 1171 1174 |
institution |
Open Polar |
collection |
The University of Adelaide: Digital Library |
op_collection_id |
ftunivadelaidedl |
language |
English |
topic |
Microporous gold gold tellurides micro-textures epithermal deposit |
spellingShingle |
Microporous gold gold tellurides micro-textures epithermal deposit Okrugin, V. Andreeva, E. Etschmann, B. Pring, A. Li, K. Zhao, J. Griffiths, G. Lumpkin, G. Triani, G. Brugger, J. Microporous gold: Comparison of textures from nature and experiments |
topic_facet |
Microporous gold gold tellurides micro-textures epithermal deposit |
description |
Recent experiments have shown that microporous gold can be obtained via the oxidative dealloying of Au(Ag)-tellurides such as calaverite (AuTe 2 ), krennerite (Au 3 AgTe 8 ), and sylvanite [(Au,Ag) 2 Te 4 ] under mild hydrothermal conditions. The same Au textures have been found in natural gold-telluride ores from the Late Miocene epithermal Aginskoe Au-Ag-Te deposit in Kamchatka, Russia. This confirms that natural microporous gold can form via the replacement of telluride minerals. This replacement may take place under hydrothermal conditions, e.g., during the late stage of the ore-depositing event, explaining the wide distribution of “mustard gold” in some deposits. At Aginskoe, the oxidation of Au-tellurides appears to have resulted only in local redistribution of Au and Te, because the associated oxidation of chalcopyrite scavenged the excess Te, inhibiting the crystallization of secondary Te minerals more than a few micrometers in size. Such cryptic mobility may explain the lack of reported secondary Te minerals in many Te-bearing deposits. Victor M. Okrugin, Elena Andreeva, Barbara Etschmann, Allan Pring, Kan Li, Jing Zhao, Grant Griffiths, Gregory R. Lumpkin, Gerry Triani, and Joël Brugger |
format |
Article in Journal/Newspaper |
author |
Okrugin, V. Andreeva, E. Etschmann, B. Pring, A. Li, K. Zhao, J. Griffiths, G. Lumpkin, G. Triani, G. Brugger, J. |
author_facet |
Okrugin, V. Andreeva, E. Etschmann, B. Pring, A. Li, K. Zhao, J. Griffiths, G. Lumpkin, G. Triani, G. Brugger, J. |
author_sort |
Okrugin, V. |
title |
Microporous gold: Comparison of textures from nature and experiments |
title_short |
Microporous gold: Comparison of textures from nature and experiments |
title_full |
Microporous gold: Comparison of textures from nature and experiments |
title_fullStr |
Microporous gold: Comparison of textures from nature and experiments |
title_full_unstemmed |
Microporous gold: Comparison of textures from nature and experiments |
title_sort |
microporous gold: comparison of textures from nature and experiments |
publisher |
Walter de Gruyter GmbH |
publishDate |
2014 |
url |
http://hdl.handle.net/2440/93860 https://doi.org/10.2138/am.2014.4792 |
long_lat |
ENVELOPE(155.200,155.200,-68.917,-68.917) |
geographic |
Andreeva |
geographic_facet |
Andreeva |
genre |
Kamchatka |
genre_facet |
Kamchatka |
op_source |
http://dx.doi.org/10.2138/am.2014.4792 |
op_relation |
http://purl.org/au-research/grants/arc/DP1095069 American Mineralogist: an international journal of earth and planetary materials, 2014; 99(5-6):1171-1174 0003-004X 1945-3027 http://hdl.handle.net/2440/93860 doi:10.2138/am.2014.4792 |
op_rights |
© 2014 Mineralogical Society of America |
op_doi |
https://doi.org/10.2138/am.2014.4792 |
container_title |
American Mineralogist |
container_volume |
99 |
container_issue |
5-6 |
container_start_page |
1171 |
op_container_end_page |
1174 |
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1786206940000419840 |