Microporous gold: comparison of textures from nature and experiments

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dc.contributor.authorOkrugin, VMen_AU
dc.contributor.authorAndreeva, Een_AU
dc.contributor.authorEtschmann, BEen_AU
dc.contributor.authorPring, Aen_AU
dc.contributor.authorLi, Pen_AU
dc.contributor.authorZhao, Jen_AU
dc.contributor.authorGriffiths, GJen_AU
dc.contributor.authorLumpkin, GRen_AU
dc.contributor.authorTriani, Gen_AU
dc.contributor.authorBrugger, Jen_AU
dc.date.accessioned2016-10-10T23:51:31Zen_AU
dc.date.available2016-10-10T23:51:31Zen_AU
dc.date.issued2014-05-15en_AU
dc.date.statistics2016-10-11en_AU
dc.description.abstractRecent experiments have shown that microporous gold can be obtained via the oxidative dealloying of Au(Ag)-tellurides such as calaverite (AuTe2), krennerite (Au3AgTe8), and sylvanite [(Au,Ag)2Te4] 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. © 2014, Mineralogical Society of America.en_AU
dc.identifier.citationOkrugin, V. M., Andreeva, E., Etschmann, B., Pring, A., Li, K., Zhao, J., Griffiths, G., Lumpkin, G. R., Triani, G., & Brugger, J. (2014). Microporous gold: Comparison of textures from Nature and experiments. American Mineralogist, 99(5-6), 1171-1174 doi:10.2138/am.2014.4792en_AU
dc.identifier.govdoc7261en_AU
dc.identifier.issn1945-3027en_AU
dc.identifier.issue5-6en_AU
dc.identifier.journaltitleAmerican Mineralogisten_AU
dc.identifier.pagination1171-1174en_AU
dc.identifier.urihttp://dx.doi.org/10.2138/am.2014.4792en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/7699en_AU
dc.identifier.volume99en_AU
dc.language.isoenen_AU
dc.publisherAmerican Mineralogisten_AU
dc.subjectGolden_AU
dc.subjectOresen_AU
dc.subjectMiocene epochen_AU
dc.subjectChalcopyriteen_AU
dc.subjectMineralsen_AU
dc.titleMicroporous gold: comparison of textures from nature and experimentsen_AU
dc.typeJournal Articleen_AU
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