Hydrothermal alteration of carbonaceous mudstones hosting the Eskay Creek Au deposit, British Columbia
The Jurassic Eskay Creek deposit in northwestern British Columbia represents an unusual volcanic-hosted massive sulfide deposit that is characterized by a high precious metal content, enrichment of the epithermal-style suite of elements, a complex sulfide and sulfosalt ore mineralogy, and a relatively low temperature of ore deposition. The stratiform ore lenses of the deposit are hosted by carbonaceous mudstones that only show cryptic alteration. An integrated approach consisting of mineralogical and geochemical analysis, multivariate statistical data reduction, mass transfer analysis, and ...
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