期刊
AMERICAN MINERALOGIST
卷 97, 期 8-9, 页码 1515-1518出版社
MINERALOGICAL SOC AMER
DOI: 10.2138/am.2012.4207
关键词
Arsenic-free pyrite; nanoparticles; Au-(Ag)-tellurides; devolatilization
资金
- Ministry of Education, Science and Culture [20840035]
- Grants-in-Aid for Scientific Research [20840035] Funding Source: KAKEN
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
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据