- Mineral Resources
- Online Spatial Data
- National Mineral Resource Assessment 1998
Mineral assessment tracts in Madison county, Montana
[Additional scientific data in this geographic area]
- NR04: Skarn Zn-Pb (18c) (Mesozoic - Tertiary) , covers 0.8 % of this area
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- NR07: Skarn Au (b1930) (Mesozoic - Tertiary) , covers 0.8 % of this area
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- NR10: Porphyry Cu (North America) (17) (Cretaceous - Eocene) , covers 14 % of this area
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- NR13: Polymetallic replacement (19a) (Mesozoic - Tertiary) , covers 0.8 % of this area
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- NR19: Massive sulfide, kuroko (28a) (Proterozoic) , covers 15 % of this area
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- NR24: Epithermal vein, quartz-adularia (25c + 25d) (Tertiary) , covers 2 % of this area
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- NR26: Epithermal vein, quartz-alunite (25e) (Tertiary) , covers 2 % of this area
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- NR30: Hot-spring Au-Ag (25a) (Tertiary) , covers 2 % of this area
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- NR39: Sedimentary exhalative Zn-Pb (31a) (Late Proterozoic) , covers 2 % of this area
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- NR48: Homestake stratiform Au (ofr94250) (Archean) , covers 37 % of this area
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