Fluid-rock interactions leading to the formation of the epithermal Ag-Pb-Zn veins: A perspective of thermodynamic modeling.

ABSTRACT: Although vein-type silver-lead-zinc ore deposits have been extensively studied, the factors controlling their formation are still poorly understood and their genesis is a matter of ongoing debate. In this contribution, I present new mineralogical data and the results of thermodynamic modeling that constrain the conditions of metal transport and deposition for the Aerhada epithermal Pb-Zn-Ag deposit (reserves of >1,000 t Ag@58 g/t and 1.0 Mt Pb+Zn@5.2%) in NE China. Three primary paragenetic stages have been identified, the second of which (Stage II) is the main base metal and silver mineralization. Freibergite, argentite, pyrargyrite, and canfieldite are the main Ag-bearing minerals and are spatially associated with an alteration assemblage of quartz-muscovite ± chlorite ± epidote. Dissolu

SUBMITTER: Zhai D 

PROVIDER: S-EPMC11197744 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature