Mineral Resources
Online Spatial Data
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.