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

[Additional scientific data in this geographic area]

AK-EC01: Besshi massive sulfide (24b) (Paleozoic - Mesozoic) , covers 72 % of this area
The number of undiscovered deposits in this tract was not estimated.
AK-EC02: Cyprus massive sulfide (24a) (Jurassic) , covers 67 % 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 13 % 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 < 0.1 % of this area
90%50%10%5%1%
28152030
AK-EC13: Porphyry Cu, BC-Ak type (17) (Cretaceous - Tertiary) , covers 94 % of this area
90%50%10%5%1%
124810
AK-EC14: Plutonic porphyry Au (43) (Cretaceous - Tertiary) , covers 25 % of this area
90%50%10%5%1%
135913
AK-EC15: Placer Au (39a) (Cenozoic) , covers 65 % of this area
The number of undiscovered deposits in this tract was not estimated.
AK-EC16: Polymetallic replacement (19a) (Cretaceous - Tertiary) , covers 14 % of this area
The number of undiscovered deposits in this tract was not estimated.
AK-EC18: Polymetallic vein (22c) (Mesozoic - Tertiary) , covers 73 % of this area
The number of undiscovered deposits in this tract was not estimated.