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

Mineral assessment tracts in Tom Green county, Texas

GP03: Sediment-hosted Cu, redbed (30b.2) (Pennsylvanian - Permian) , covers 30 % of this area

90%	50%	10%	5%	1%
1	10	20	20	20

GP04: Sediment-hosted Cu, reduced-facies (30b.1) (Permian) , covers 29 % of this area

90%	50%	10%	5%	1%
1	3	10	10	10

GP05: Mississippi Valley, S.E. Missouri Pb-Zn (32a) (Late Paleozoic) , covers 14 % of this area

90%	50%	10%	5%	1%
2	3	3	6	8