Mineral assessment tracts in Allegheny county, Pennsylvania

EC01: Sandstone-hosted Pb-Zn (30a) (Paleozoic) , covers 45 % of this area
The number of undiscovered deposits in this tract was not estimated.
EC02: Sedimentary exhalative Zn-Pb (31a) (Devonian - Mississippian) , covers 35 % of this area
The number of undiscovered deposits in this tract was not estimated.