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

Mineral assessment tracts in Union county, Oregon

[Additional scientific data in this geographic area]

PC01: Skarn Cu (18b) (Mesozoic - Tertiary) , covers 0.3 % of this area

90%	50%	10%	5%	1%
0	3	5	9	12

PC02: Skarn Au, truncated (b1930) (Mesozoic) , covers 0.3 % of this area

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

PC06: Porphyry Cu (BC-AK) (17) (Mesozoic - Tertiary) , covers 30 % of this area

90%	50%	10%	5%	1%
0	0	1	2	5

PC13: Massive sulfide, kuroko (28a) (Permian) , covers 0.3 % of this area

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

PC20: Epithermal vein, Comstock (25c) (Tertiary) , covers 8 % of this area

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

PC28: Hot-spring Au-Ag (25a) (Tertiary) , covers 8 % of this area

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

PC38: Low-sulfide Au-quartz vein (36a) (Mesozoic) , covers 0.3 % of this area

90%	50%	10%	5%	1%
0	0	1	3	8