Mineral assessment tracts in De Long Mountains (1:250,000 Alaska quadrangle in USGS Quadrangles)

[Additional scientific data in this geographic area]

AK-BR02: Cyprus massive sulfide (24a) (Jurassic) , covers 4 % of this area
The number of undiscovered deposits in this tract was not estimated.
AK-BR13: Placer Au (39a) (Quaternary) , covers 8 % of this area
The number of undiscovered deposits in this tract was not estimated.
AK-BR17: Zn-Pb-Ag veins (Devonian - Mississippian) , covers 8 % of this area
The number of undiscovered deposits in this tract was not estimated.
AK-BR20: Sandstone hosted Pb-Zn (30a) (Devonian - Mississippian) , covers 8 % of this area
The number of undiscovered deposits in this tract was not estimated.
AK-BR21: Sediment-hosted Cu (30b) (Paleozoic - Mesozoic) , covers 84 % of this area
The number of undiscovered deposits in this tract was not estimated.
AK-BR23: Sedex Zn-Pb (31a) (Mississippian - Pennsylvanian) , covers 26 % of this area
90%50%10%5%1%
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