Mineral assessment tracts in Blair county, Pennsylvania

EC02: Sedimentary exhalative Zn-Pb (31a) (Devonian - Mississippian) , covers 52 % of this area
The number of undiscovered deposits in this tract was not estimated.
EC04: Mississippi Valley, Appalachian Zn (32b) (Late Paleozoic) , covers 40 % of this area
The number of undiscovered deposits in this tract was not estimated.
EC06: Mississippi Valley, Appalachian Zn (32b) (Late Paleozoic) , covers 7 % of this area
90%50%10%5%1%
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