Mineral assessment tracts in Fort Yukon (1:250,000 Alaska quadrangle in USGS Quadrangles)

[Additional scientific data in this geographic area]

AK-EC13: Porphyry Cu, BC-Ak type (17) (Cretaceous - Tertiary) , covers 0.3 % of this area
90%50%10%5%1%
124810
AK-EC14: Plutonic porphyry Au (43) (Cretaceous - Tertiary) , covers < 0.1 % of this area
90%50%10%5%1%
135913
AK-EC16: Polymetallic replacement (19a) (Cretaceous - Tertiary) , covers 0.5 % of this area
The number of undiscovered deposits in this tract was not estimated.
AK-EC18: Polymetallic vein (22c) (Mesozoic - Tertiary) , covers 0.4 % of this area
The number of undiscovered deposits in this tract was not estimated.