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

Mineral assessment tracts in Douglas county, Washington

[Additional scientific data in this geographic area]

NR09: Porphyry Cu (North America) (17) (Mesozoic) , covers 16 % of this area

90%	50%	10%	5%	1%
0	0	0	0	1

PC04: Porphyry Cu (BC-AK) (17) (Mesozoic - Tertiary) , covers 11 % of this area

90%	50%	10%	5%	1%
3	6	15	15	15

PC19: Epithermal vein, Comstock (25c) (Tertiary) , covers 4 % of this area

90%	50%	10%	5%	1%
1	3	4	4	4

PC28: Hot-spring Au-Ag (25a) (Tertiary) , covers 4 % of this area

90%	50%	10%	5%	1%
0	1	3	5	7

PC36: Low-sulfide Au-quartz vein (36a) (Mesozoic) , covers 9 % of this area

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