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

Mineral assessment tracts in Butler county, Pennsylvania

[Additional scientific data in this geographic area]

EC01: Sandstone-hosted Pb-Zn (30a) (Paleozoic) , covers 100 % of this area

The number of undiscovered deposits in this tract was not estimated.

EC02: Sedimentary exhalative Zn-Pb (31a) (Devonian - Mississippian) , covers 93 % of this area

The number of undiscovered deposits in this tract was not estimated.