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

[Additional scientific data in this geographic area]

AK-SC04: Besshi massive sulfide (24b) (Late Cretaceous - Early Tertiary) , covers 2 % of this area
90%50%10%5%1%
510303030
AK-SC06: Cyprus massive sulfide (24a) (Early Tertiary) , covers 2 % of this area
90%50%10%5%1%
12888
AK-SC11: Low-sulfide Au-quartz veins, Chugach type (36a.1) (Tertiary) , covers 21 % of this area
90%50%10%5%1%
15777
AK-SC12: Low-sulfide Au-quartz veins, Chugach type (36a.1) (Eocene - Oligocene) , covers 45 % of this area
90%50%10%5%1%
80600800800800
AK-SC15: Sierran Kuroko mass. sulf. (28a.1) (Jurassic) , covers 16 % of this area
90%50%10%5%1%
012410
AK-SC19: Synorogenic-synvolcanic Ni-Cu (7a) (Triassic - Jurassic) , covers 8 % of this area
The number of undiscovered deposits in this tract was not estimated.
AK-SC21: Porphyry Cu, BC-Ak type (17) (Cretaceous - Tertiary) , covers 34 % of this area
90%50%10%5%1%
12666
AK-SC25: Placer Au (39a) (Cenozoic) , covers 2 % of this area
The number of undiscovered deposits in this tract was not estimated.
AK-SC28: Polymetallic vein (22c) (Cretaceous - Tertiary) , covers 34 % of this area
90%50%10%5%1%
15777
AK-SC31: Cu (Au) skarn (18b) (Cretaceous - Tertiary) , covers 34 % of this area
90%50%10%5%1%
12666