65 focus areas match these criteria.
| Focus area | Region | States | Mineral Systems | Deposit types | Commodities |
|---|---|---|---|---|---|
| Williston Basin potash | North Central | Montana; North Dakota | Marine evaporite | Potash; Salt | carnallite; salt (NaCl) |
| Williston Basin potash | North Central | Montana; North Dakota | Basin brine path | Basin brine | bromine; iodine; petroleum; salt |
| Adel Mountain Volcanics | Northwest | Montana | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites | copper; gold; thorium; uranium; yttrium |
| Bearpaw Mountains-Eagle Buttes | Northwest | Montana | Alkalic porphyry | Polymetallic sulfide S-R-V-IS | copper; gold; lead; silver |
| Bearpaw Mountains-Eagle Buttes | Northwest | Montana | Magmatic REE | Carbonatite; Peralkaline syenite/granite/rhyolite/alaskite/pegmatites | copper; gold; lead; magnetite; phosphorus; silver; thorium; uranium; vermiculite; yttrium |
| Belt Basin | Northwest | Idaho; Montana | Basin brine path | Copper (sed-hosted and replacement); Zinc-lead (MVT and sedex) | copper; lead; silver; uranium |
| Big Ben | Northwest | Montana | Climax-type | Porphyry molybdenum | molybdenum |
| Birch Creek | Northwest | Montana | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS; S-R-V tungsten | cadmium; copper; gold; lead; silver |
| Bitterroot Range anorthosite | Northwest | Montana | Mafic magmatic | Iron-titanium oxide | iron; phosphorus |
| Black Butte (Sheep Creek) | Northwest | Montana | Basin brine path | Copper (sed-hosted and replacement) | copper; gold; lead; silver; uranium |
| Bull Mountain-Elkhorn | Northwest | Montana | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS | cadmium; copper; gold; lead; silver |
| Butte pegmatite belt | Northwest | Montana | Climax-type | Pegmatite NYF | copper; lead; silver; yttrium |
| Calvert Hill District | Northwest | Montana | Porphyry Cu-Mo-Au | S-R-V tungsten | (none) |
| Castle stock | Northwest | Montana | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites | copper; thorium; uranium; yttrium |
| Castle stock | Northwest | Montana | Alkalic porphyry | Polymetallic sulfide S-R-V-IS | copper; gold; lead; silver |
| Coeur d'Alene Mining District (Silver Valley antimony) | Northwest | Idaho; Montana | Coeur d'Alene-type | Antimony; Polymetallic sulfide | cadmium; copper; lead; silver |
| Crazy Mountain Volcanics | Northwest | Montana | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites | copper; gold; iron; lead; silver; thorium; uranium; yttrium |
| Cretaceous heavy-mineral placer sandstones (black sandstones) | Northwest; North Central; Rocky Mountains | Montana; North Dakota; South Dakota; Wyoming | Placer | Columbite/tantalite; Gold; Ilmenite/rutile/leucoxene; Monazite/xenotime; Uraninite, autunite-group minerals; Wolframite/scheelite; Zircon | gold; iron; thorium; uranium; yttrium |
| Grass Range | Northwest | Montana | Magmatic REE | Carbonatite | copper; magnetite; phosphorus; thorium; uranium; vermiculite; yttrium |
| Heath Formation— Cox Ranch Member | Northwest | Montana | Marine chemocline | Black shale | copper; molybdenum; petroleum; stone coal; uranium |
| Highwood Mountains | Northwest | Montana | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites | copper; thorium; uranium; yttrium |
| Hog Heaven Volcanic Field | Northwest | Montana | Porphyry Cu-Mo-Au | High sulfidation gold-silver | copper; gold; silver |
| Johnson Ranch-Gold Butte-Froze to Death Butte | Northwest | Montana | Magmatic REE | Carbonatite | copper; magnetite; phosphorus; thorium; uranium; vermiculite; yttrium |
| Judith Mountains | Northwest | Montana | Magmatic REE | Carbonatite | copper; gold; magnetite; phosphorus; silver; thorium; uranium; vermiculite; yttrium |
| Judith Mountains | Northwest | Montana | Alkalic porphyry | Low sulfidation; Polymetallic sulfide S-R-V-IS | copper; gold; lead; silver |
| Junction District Pb-Zn | Northwest | Idaho; Montana | Basin brine path | Reflux and hydrothermal dolomite; Zinc-lead (MVT and sedex) | copper; lead; silver |
| Kenelty mine | Northwest | Montana | Basin brine path | Barite (replacement and bedded) | gold; silver |
| Lady of the Lake mafic intrusive | Northwest | Montana | Mafic magmatic | PGE (low sulfide) | gold |
| Lemhi Pass mineral district | Northwest | Idaho; Montana | Magmatic REE | Hybrid Th-REE-Fe veins and replacements | iron; thorium; yttrium |
| Little Belt Mountains | Northwest | Montana | Alkalic porphyry | Polymetallic sulfide S-R-V-IS | copper; gold; lead; silver |
| Little Belt Mountains | Northwest | Montana | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites | copper; thorium; uranium; yttrium |
| Lowland Creek Volcanics | Northwest | Montana | Alkalic porphyry | Low sulfidation | copper; gold; silver |
| Marysville district | Northwest | Montana | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS; Porphyry/skarn molybdenum | cadmium; copper; gold; lead; molybdenum; silver |
| Mineral Hill | Northwest | Idaho; Montana; Wyoming | Orogenic | Antimony; Gold | gold; silver |
| Missoula barite (Elk Creek-Coloma District) | Northwest | Montana | Basin brine path | Barite (replacement and bedded); Zinc-lead (MVT and sedex) | copper; gold; lead; silver |
| Missouri Breaks diatremes | Northwest | Montana | Magmatic REE | Carbonatite | copper; magnetite; phosphorus; thorium; uranium; vermiculite; yttrium |
| Moccasin Mountains | Northwest | Montana | Alkalic porphyry | Polymetallic sulfide S-R-V-IS | copper; gold; lead; silver |
| Moccasin Mountains | Northwest | Montana | Magmatic REE | Peralkaline syenite/granite/rhyolite/alaskite/pegmatites | copper; thorium; uranium; yttrium |
| Mount Evans Summit | Northwest | Montana | Basin brine path | Zinc-lead (MVT and sedex) | copper; lead; silver |
| Moyie | Northwest | Idaho; Montana; Washington | Mafic magmatic | Nickel-copper-PGE sulfide | copper; gold; selenium; silver |
| MT-ID Alkalic Belt | Northwest | Montana | Alkalic porphyry | Fluorspar; Polymetallic sulfide S-R-V-IS | copper; feldspar; lead; gold; silver; vermiculite |
| NW polymetallic Au-Ag veins | Northwest | Idaho; Montana; Oregon | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS | cadmium; copper; gold; lead; silver |
| Red Lodge chromite | Northwest | Montana | Mafic magmatic | Chromite | (none) |
| Rock Creek/Montanore (Libby) | Northwest | Montana | Basin brine path | Copper (sed-hosted and replacement) | copper; lead; silver; uranium |
| Rock Creek-Lost Creek Mining Districts | Northwest | Montana | Porphyry Cu-Mo-Au | S-R-V tungsten | (none) |
| Sheep Creek-Mineral Hill | Northwest | Idaho; Montana | Magmatic REE | Carbonatite; Hybrid Th-REE-Fe veins and replacements | copper; iron; magnetite; phosphorus; thorium; uranium; vermiculite; yttrium |
| Silver Bow manganese/Lexington Mine | Northwest | Montana | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS | cadmium; copper; gold; lead; silver |
| Smoky Butte | Northwest | Montana | Magmatic REE | Carbonatite | copper; magnetite; phosphorus; thorium; uranium; vermiculite; yttrium |
| Snowbird-Dry Creek | Northwest | Montana | Magmatic REE | Carbonatite; Fluorspar | copper; magnetite; phosphorus; thorium; uranium; vermiculite; yttrium |
| Soap Gulch | Northwest | Montana | Basin brine path | Zinc-lead (MVT and sedex) | copper; lead; silver |
| Southwest Montana graphite | Northwest | Montana | Metamorphic | Graphite (coal or carbonaceous sed) | (none) |
| Spar Lake (Troy) | Northwest | Idaho; Montana | Basin brine path | Copper (sed-hosted and replacement) | copper; lead; silver; uranium |
| Stillwater Complex | Northwest | Montana | Mafic magmatic | Chromite; Nickel-copper-PGE sulfide; PGE (low sulfide) | copper; gold; selenium; silver |
| Sweet Grass Hills | Northwest | Montana | Magmatic REE | Carbonatite; Fluorspar; Peralkaline syenite/granite/rhyolite/alaskite/pegmatites | copper; gold; magnetite; phosphorus; thorium; uranium; vermiculite; yttrium |
| Tobacco Root batholith | Northwest | Montana | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS | cadmium; copper; gold; lead; silver |
| Tobacco Root chromite | Northwest | Montana | Mafic magmatic | Chromite | (none) |
| Wickiup Creek | Northwest | Montana; Wyoming | Basin brine path | Zinc-lead (MVT and sedex) | copper; lead; silver |
| Wolf Creek pluton/Ruby Mountains | Northwest | Montana | Mafic magmatic | Chromite; Nickel-copper-PGE sulfide | copper; gold; selenium; silver |
| Zortman syenite | Northwest | Montana | Alkalic porphyry | Low sulfidation | copper; gold; silver |
| Boulder Batholith | Northwest | Montana | Porphyry Cu-Mo-Au | Polymetallic sulfide S-R-V-IS; Porphyry/skarn copper | cadmium; copper; gold; molybdenum; silver; uranium |
| Absaroka Volcanic Plateau | Northwest; Rocky Mountains | Montana; Wyoming | Porphyry Cu-Mo-Au | Porphyry/skarn copper; Porphyry/skarn molybdenum; Polymetallic sulfide S-R-V-IS | cadmium; copper; gold; lead; molybdenum; silver; uranium |
| Cretaceous-Paleocene coals, underclays, and interbeds | Rocky Mountains | Montana; North Dakota; South Dakota; Wyoming | Chemical weathering | Clay; Coal uranium, Regolith (Ion adsorption) REE; Surficial uranium | aggregate (coal clinker); clay; coal; molybdenum; uranium; yttrium |
| Northwestern Black Hills Uranium District | Northwest; Rocky Mountains | Montana; Wyoming | Meteoric recharge | Sandstone uranium | uranium |
| Phosphoria Formation | Rocky Mountains | Colorado; Idaho; Montana; Nevada; Utah; Wyoming | Marine chemocline | Black shale; Phosphate | copper; gold; molybdenum; petroleum; phosphate fertilizer; stone coal; uranium |
| Pryor Mountains-Little Mountain | Northwest; Rocky Mountains | Montana; Wyoming | Meteoric recharge | Carbonate uranium | uranium |