Mineral assessment tracts in Multnomah county, Oregon

PC05: Porphyry Cu (BC-AK) (17) (Tertiary) , covers 51 % of this area
90%50%10%5%1%
13101010
PC27: Epithermal vein, Sado (25d) (Tertiary) , covers 30 % of this area
90%50%10%5%1%
02588
PC28: Hot-spring Au-Ag (25a) (Tertiary) , covers 30 % of this area
90%50%10%5%1%
01357