1. Mineral Resources
  2. Online Spatial Data
  3. National Mineral Resource Assessment 1998

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

[Additional scientific data in this geographic area]

AK-SW05: Peraluminous granite porphyry gold (Cretaceous - Tertiary) , covers 10 % of this area
The number of undiscovered deposits in this tract was not estimated.
AK-SW07: Kipushi Cu-Pb-Zn (32c) (Paleozoic) , covers 11 % of this area
The number of undiscovered deposits in this tract was not estimated.
AK-SW10: Mississippi Valley Type (32a & 32b) (Paleozoic) , covers 11 % of this area
90%50%10%5%1%
00112
AK-SW12: Porphyry Cu, BC-Ak type (17) (Mesozoic - Tertiary) , covers 22 % of this area
90%50%10%5%1%
126810
AK-SW13: Plutonic porphyry Au (43) (Mesozoic - Tertiary) , covers 23 % of this area
90%50%10%5%1%
36101520
AK-SW14: Placer Au (39a) (Cenozoic) , covers 77 % of this area
The number of undiscovered deposits in this tract was not estimated.
AK-SW15: Polymetallic replacement (19a) (Mesozoic - Tertiary) , covers 40 % of this area
The number of undiscovered deposits in this tract was not estimated.
AK-SW16: Polymetallic vein (22c) (Mesozoic - Tertiary) , covers 64 % of this area
The number of undiscovered deposits in this tract was not estimated.
AK-SW17: Cu (Au) skarn (18b) (Mesozoic - Tertiary) , covers 47 % of this area
90%50%10%5%1%
2381224
AK-SW18: Zn-Pb skarn (18c) (Mesozoic - Tertiary) , covers 47 % of this area
90%50%10%5%1%
124612
AK-SW19: Sedex Zn-Pb (31a) (Paleozoic) , covers 41 % of this area
90%50%10%5%1%
01235
AK-SW20: Epithermal vein, hot spring Au (25a) (Cretaceous - Tertiary) , covers 2 % of this area
90%50%10%5%1%
01236