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

[Additional scientific data in this geographic area]

AK-EC01: Besshi massive sulfide (24b) (Paleozoic - Mesozoic) , covers 74 % of this area
The number of undiscovered deposits in this tract was not estimated.
AK-EC02: Cyprus massive sulfide (24a) (Jurassic) , covers 3 % of this area
The number of undiscovered deposits in this tract was not estimated.
AK-EC06: Low-sulfide Au-quartz veins (36a) (Cretaceous - Tertiary) , covers 72 % of this area
The number of undiscovered deposits in this tract was not estimated.
AK-EC07: Low-sulfide Au-quartz veins (36a) (Cretaceous - Tertiary) , covers 5 % of this area
90%50%10%5%1%
28152030
AK-EC13: Porphyry Cu, BC-Ak type (17) (Cretaceous - Tertiary) , covers 82 % of this area
90%50%10%5%1%
124810
AK-EC14: Plutonic porphyry Au (43) (Cretaceous - Tertiary) , covers 67 % of this area
90%50%10%5%1%
135913
AK-EC15: Placer Au (39a) (Cenozoic) , covers 98 % of this area
The number of undiscovered deposits in this tract was not estimated.
AK-EC18: Polymetallic vein (22c) (Mesozoic - Tertiary) , covers 99 % of this area
The number of undiscovered deposits in this tract was not estimated.
AK-WC17: Placer Au (39a) (Cenozoic) , covers < 0.1 % of this area
The number of undiscovered deposits in this tract was not estimated.
AK-WC22: Polymetallic vein (22c) (Mesozoic - Tertiary) , covers < 0.1 % of this area
The number of undiscovered deposits in this tract was not estimated.