Abstract
The Bajiazi deposits of western Liaoning Province, northeastern China, are aligned approximately west-east in an 8-× 15-km district. The Zn-Pb-Ag-FeS2 sulfide ores are hosted in intensively folded and faulted Early Proterozoic carbonates and minor clastic rocks, near their contact with Late Jurassic-Early Cretaceous Bajiazi granite. The ore-bearing strata on both limbs of the Bajiazi syncline can be correlated throughout the district. Orebodies are stratigraphically conformable with the host rocks and mostly parallel the contact metamorphic halo of the granite, in the skarn mineralizing zone. The ores are composed of stratabound and stratiform sulfide lenses and layers, are associated with sediments formed in local depressions of a tectonically active, shallow-marine environment, and are limited to dolomitized tidal flat and lagoonal facies with cryptalgal lamination and to adjacent oolitic grainstones of barrier facies. The ores consist of fine- to medium-grained intergrowths of sulfides in dolomite and ...
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