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Gold-telluride nanoparticles revealed in arsenic-free pyrite


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

DOI: doi:10.2138/am.2012.4207


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:122
Deposited By:Centre for Ore Deposit Research - CODES CoE
Deposited On:2012-12-04
Last Modified:2013-04-04
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