Geology of Canadian Mineral Deposit Types
This volume defines and summarizes in a comprehensive and systematic manner the essential characteristics of all economically significant types of Canadian mineral deposits. These summaries reflect the current understanding of mineral deposits and correspond closely to the definition of mineral-deposit types in common use. A large color section serves to illustrate details of some of these mineral deposits, and locations of all known deposits are presented on an oversize figure and are indexed in an appendix, as well. Like previous volumes of this type, this volume will be a long-standing premier reference for academia, industry, and government institutions alike.
Stratiform exhalative sulphide deposits are generally concordant, massive to semi-massive accumulations of sulphide (primarily iron sulphide) – sulphate minerals (barite, anhydrite) that formed on or immediately below the seafloor penecontemporaneously with their host rocks. They range in age from those that are actively forming within modern oceanic spreading ridges and back-arc basins, to those preserved in ca. 2.0 Ga sedimentary basins, and in ca. 3.4 Ga oceanic crust. Canada is particularly well endowed with classical examples of all subtypes, as well as with deposits that may be regarded as hybrid or of mixed character between the different subtypes.