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.
Unconformity-associated uranium deposits typically consist of uranium concentrations at the base of a Proterozoic sandstone sequence where it unconformably overlies pre- Middle Proterozoic metamorphic basement rocks, which commonly include graphitic pelitic units. The deposits are associated with faults or fracture zones.
The principal commodity is uranium. It is commonly accompanied by other metals, particularly Ni, Co, and As, but none of these constitute significant recoverable byproducts at present. Examples of important deposits of this type in Canada are Cigar Lake, Key Lake, Rabbit Lake, McArthur River (also known as P2 North), and Eagle Point, all in Saskatchewan (Fig. 7-1)....