Over 50% of hard rock gold occurrences in Yukon are vein occurrences whose genesis, in many cases, is poorly understood. Other types of occurrences include epithermal, sub-volcanic, intrusion-related, porphyry, skarn and replacement gold.
Extensive Cretaceous magmatism is responsible for numerous gold occurrences that comprise the Tintina Gold Province (TGP). Multiple pulses of magmatism are associated with occurrences with varying metallogeny. This belt extends out of Yukon and across Alaska: the intrusion-related Eagle gold deposit (formerly Dublin Gulch) in central Yukon bears striking resemblance to the Fort Knox deposit near Fairbanks, Alaska.
The Dawson Range area in western Yukon is characterized by gold (and copper) occurrences ranging in age from Jurassic to Late-Cretaceous. The Jurassic Minto and Carmacks Copper deposits are unique copper-gold porphyry-like occurrences that were deformed during emplacement. The mid-Cretaceous Nucleus gold deposit at Mount Freegold is characterized by mineralized veins, skarns and porphyritic dykes. Mid- to Late Cretaceous magmatic-hydrothermal activity is responsible for the vein, skarn, replacement and epithermal mineralization at the Sonora Gulch gold property. The White Gold vein occurrence has not been dated but is likely Mesozoic.
Map of Yukon Mineral Deposits (PDF 3.41MB)
