- Mineral Resources
- Online Spatial Data
- National Mineral Resource Assessment 1998
Mineral assessment tracts in Gulkana (1:250,000 Alaska quadrangle in USGS Quadrangles)
[Additional scientific data in this geographic area]
- AK-SC01: Basaltic Cu/Kennecott Cu (23) (Cretaceous) , covers 31 % of this area
- The number of undiscovered deposits in this tract was not estimated.
- AK-SC03: Besshi massive sulfide (24b) (Late Triassic) , covers 23 % of this area
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- AK-SC05: Cu-Ag quartz veins (Cretaceous) , covers 31 % of this area
- The number of undiscovered deposits in this tract was not estimated.
- AK-SC07: Au-Sb veins (36c) (Cretaceous - Tertiary) , covers < 0.1 % of this area
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- AK-SC08: Low-sulfide Au-quartz veins (36a) (Cretaceous - Tertiary) , covers < 0.1 % of this area
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- AK-SC09: Low-sulfide Au-quartz veins (36a) (Cretaceous) , covers 31 % of this area
- The number of undiscovered deposits in this tract was not estimated.
- AK-SC15: Sierran Kuroko mass. sulf. (28a.1) (Jurassic) , covers 3 % of this area
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- AK-SC16: Kuroko massive sulfide (28a) (Late Paleozoic) , covers 16 % of this area
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- AK-SC18: Synorogenic-synvolcanic Ni-Cu (7a) (Late Triassic) , covers 31 % of this area
- The number of undiscovered deposits in this tract was not estimated.
- AK-SC20: Porphyry Cu, BC-Ak type (17) (Cretaceous - Tertiary) , covers < 0.1 % of this area
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- AK-SC22: Porphyry Cu, BC-Ak type (17) (Jurassic - Cretaceous) , covers 36 % of this area
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- AK-SC23: Porphyry Cu, BC-Ak type (17) (Paleozoic) , covers 16 % of this area
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- AK-SC24: Plutonic porphyry Au (43) (Cretaceous - Tertiary) , covers < 0.1 % of this area
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- AK-SC25: Placer Au (39a) (Cenozoic) , covers 89 % of this area
- The number of undiscovered deposits in this tract was not estimated.
- AK-SC27: Polymetallic vein (22c) (Mesozoic - Tertiary) , covers < 0.1 % of this area
- The number of undiscovered deposits in this tract was not estimated.
- AK-SC29: Polymetallic vein (22c) (Cenozoic) , covers 15 % of this area
- The number of undiscovered deposits in this tract was not estimated.
- AK-SC31: Cu (Au) skarn (18b) (Cretaceous - Tertiary) , covers 15 % of this area
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- AK-SC32: Cu (Au) skarn (18b) (Jurassic - Cretaceous) , covers 36 % of this area
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- AK-SC33: Cu (Au) skarn (18b) (Paleozoic) , covers 16 % of this area
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