- Mineral Resources
- Online Spatial Data
- National Mineral Resource Assessment 1998
Mineral assessment tracts in Ravalli county, Montana
[Additional scientific data in this geographic area]
- NR04: Skarn Zn-Pb (18c) (Mesozoic - Tertiary) , covers 4 % of this area
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- NR07: Skarn Au (b1930) (Mesozoic - Tertiary) , covers 4 % of this area
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- NR10: Porphyry Cu (North America) (17) (Cretaceous - Eocene) , covers 72 % of this area
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- NR13: Polymetallic replacement (19a) (Mesozoic - Tertiary) , covers 4 % of this area
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- NR36: Sediment-hosted Cu, reduced-facies (30b.1) (Proterozoic) , covers 0.5 % of this area
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- NR37: Sediment-hosted Cu, Revett (30b.3) (Proterozoic) , covers 1 % of this area
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- NR39: Sedimentary exhalative Zn-Pb (31a) (Late Proterozoic) , covers < 0.1 % of this area
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