Mineral assessment tracts in Houghton county, Michigan

[Additional scientific data in this geographic area]

LS07: Sediment-hosted Cu, reduced-facies (modified) (30b.1) (Middle Proterozoic) , covers 31 % of this area
90%50%10%5%1%
25101010
LS08: Native Cu (Middle Proterozoic) , covers 5 % of this area
90%50%10%5%1%
1020404040