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Gold-telluride nanoparticles revealed in arsenic-free pyrite
Citation
Ciobanu, CL and Cook, NJ and Utsunomiya, S and Kogagwa, M and Green, L and Gilbert, S and Wade, B, Gold-telluride nanoparticles revealed in arsenic-free pyrite, The American Mineralogist: an international journal of earth and planetary materials, 97, (8-9) pp. 1515-1518. ISSN 0003-004X (2012) [Refereed Article]
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Copyright Statement
Copyright 2012 Mineralogical Society of America
Abstract
Pyrite, the most abundant sulfide on Earth and a common component of gold deposits, can be a significant host for refractory gold. This is the first documentation of pore-attached, composite Au-telluride nanoparticles in "arsenic-free" pyrite. Trace elements mapping in pyrite from an intrusion-hosted Au deposit with orogenic overprint (Dongping, China) shows trails of tellurides overlapping Co-Ni-zonation. Intragranular microfracturing, anomalous anisotropy, and high porosity are all features consistent with devolatilization attributable to the orogenic event. The pyrite-hosted nanoparticles are likely the "frozen," solid expression of Te-rich, Au-Ag-Pb-bearing vapors discharged at this stage. Nanoparticle formation, as presented here, provides the "smallest-scale" tool to fingerprint Au-trapping during crustal metamorphism.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Research Division: | Earth Sciences |
| Research Group: | Geochemistry |
| Research Field: | Inorganic Geochemistry |
| Objective Division: | Mineral Resources (excl. Energy Resources) |
| Objective Group: | Mineral Exploration |
| Objective Field: | Precious (Noble) Metal Ore Exploration |
| UTAS Author: | Gilbert, S (Ms Sarah Gilbert) |
| ID Code: | 81376 |
| Year Published: | 2012 |
| Web of Science® Times Cited: | 45 |
| Deposited By: | Centre for Ore Deposit Research - CODES CoE |
| Deposited On: | 2012-12-04 |
| Last Modified: | 2013-04-04 |
| Downloads: | 1 View Download Statistics |
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