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Mineral Resources
Online Spatial Data
National Mineral Resource Assessment 1998
Mineral assessment tracts in Tama county, Iowa
GP05: Mississippi Valley, S.E. Missouri Pb-Zn (32a)
(Late Paleozoic)
, covers 18 % of this area
90%
50%
10%
5%
1%
2
3
3
6
8
LS01: Duluth Cu-Ni-PGE (5a)
(Middle Proterozoic)
, covers 27 % of this area
The number of undiscovered deposits in this tract was not estimated.
LS07: Sediment-hosted Cu, reduced-facies (modified) (30b.1)
(Middle Proterozoic)
, covers 45 % of this area
90%
50%
10%
5%
1%
2
5
10
10
10
LS09: Mississippi Valley, S.E. Missouri Pb-Zn (32a)
(Late Paleozoic)
, covers 82 % of this area
90%
50%
10%
5%
1%
0
0
0
1
2