Large gold nuggets in ore-placer clusters of the Amur Region
Abstract
The study of large and very large gold nuggets extracted from placers in the Amur province since 1858 is described. The main nugget-forming formation is gold-quartz, the gold-polymetallic formation plays a lesser role, and the skarn type of mineralization plays an even smaller role. It has been identified that most of ore-placer clusters containing nuggets are confined to the central, most productive part of the province, and a smaller part to the southern and northern peripheries of the province. It is shown that the Gar River-2 Placer of the Yasnensky Cluster contains a nest of almost unrounded nuggets in quartz aggregates comparable in total weight to the world’s largest Holtermann Nugget.
About the Authors
A. V. Melnikov
Institute of Geology and Nature Management FEB RAS (IG&NM FEB RAS)
Russian Federation
Russian Federation
Candidate of Geological and Mineralogical Sciences, Leading Researcher
V. A. Stepanov
Scientific Research Geotechnological Center FEB RAS (SRGC FEB RAS)
Russian Federation
Russian Federation
Doctor of Geological and Mineralogical Sciences, Professor, Chief Researcher
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Review
For citations:
Melnikov A.V., Stepanov V.A. Large gold nuggets in ore-placer clusters of the Amur Region. Regional Geology and Metallogeny. 2020;(83):76–87. (In Russ.)
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