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

[Additional scientific data in this geographic area]

AK-SC25: Placer Au (39a) (Cenozoic) , covers 0.5 % of this area
The number of undiscovered deposits in this tract was not estimated.
AK-SC37: Sedex Zn-Pb (31a) (Cenozoic) , covers 2 % of this area
The number of undiscovered deposits in this tract was not estimated.