Au-Pb compounds in nature: A general overview and new evidence from the Inagli Pt-Au placer deposit, the Aldan Shield, Russia

作者：Svetlitskaya Tatyana V^*; Nevolko Peter A

来源：Ore Geology Reviews, 2017, 89: 719-730.

DOI：10.1016/j.oregeorev.2017.07.007

• Au-Pb compound
• Hunchunite
• Anyuiite
• Novodneprite
• Pb-Fe-aluminosilicate
• Gold
• Alkaline fluid
• Pt-Au placer
• Inagli
• Aldan Shield

This study presents a new and first finding of Au-Pb intermetallic compounds in the Inagli Pt-Au placer deposit, the Republic of Sakha (Yakutia), Russia. This is the first time that all three accepted minerals (hunchunite, anyuiite and novodneprite), as well as unnamed Au-Pb intermetallics, corresponding in composition to Au-1.5 Pb and AuPb, are present together in the same locality. We provide chemical compositions of Au-Pb compounds and host gold particles, describe morphology and relationships between different mineral phases. We also present an unexpected finding of unusual inclusion of Pb-Fealuminosilicate associated with K-feldspar and anyuiite in the gold grain. The new data together with data from other occurrences of Au-Pb compounds worldwide were reviewed to discuss type localities, mineralogy, conditions and possible mechanisms of formation of Au-Pb intermetallics and to provide an overview of current knowledge about these uniquely rare but naturally occurring minerals.

• 出版日期2017-10