Mineral assessment tracts in Humboldt county, Iowa

LS07: Sediment-hosted Cu, reduced-facies (modified) (30b.1) (Middle Proterozoic) , covers 91 % of this area
90%50%10%5%1%
25101010
LS08: Native Cu (Middle Proterozoic) , covers 0.8 % of this area
90%50%10%5%1%
1020404040
LS09: Mississippi Valley, S.E. Missouri Pb-Zn (32a) (Late Paleozoic) , covers 100 % of this area
90%50%10%5%1%
00012