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rank |
rank |
rank |
metals produced |
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| 1 | Troy-Grouse Mountain | Lincoln | 3 | 3 | 3 | Replacement veins and fissure filling in meta-diorite dikes in Precambrian argillite | Gibson, 1948 | |
| 2 | Libby | Lincoln | 3 | 3 | 3 | Gold | Replacement veins in shear zones and faults in Precambrian argillite | Gibson, 1948 |
| 3 | Hog Heaven | Flathead | 2 | 3 | Replacement bodies in stockwork in Tertiary porphyritic latite dike | Shenon & Taylor, 1936 | ||
| 4 | Eagle (Jack Waite mine) | Sanders | 3 | 3 | 2 | Replacement veins in shears in Precambrian quartzite and argillite | Hosterman, 1956 | |
| 5 | Packer Creek (Last Chance) (Silver Cable mine) | Mineral | 3 | 3 | 3 | Replacement veins along faults and fractures in Precambrian argillite and quartzite | Wallace & Hosterman, 1956 | |
| 6 | Keystone (Iron Mountain) (Iron Mountain, Nancy Lee mines) | Mineral | 3 | 3 | 3 | Replacement veins in Precambrian quartzite and argillite | Campbell, 1960 | |
| 7 | Curlew (Curlew mine) | Ravalli | 3 | 3 | 3 | Fissure filling along fault contact between granite or Pleistocene gravel and Precambrian (?) quartzite and limestone | Sahinen, 1957 | |
| 7-A | Copper Cliff (Cramer Creek) (Blacktail mine) | Misoula | 3 | Replacement bodies in Cambrian(?) dolomitic limestone | Sahinen, 1957 | |||
| 8 | Garnet (First Chance) | Granite | 3 | Gold | Veins in granodiroite stockwork of Laramide age and along bedding in adjacent Precambrian and Cambrian quartzite and schistose shale | Pardee, 1918a | ||
| 9 | Dunkelberg (Forest Rose mine) | Granite | 3 | 3 | 3 | veins near axis of anticline in Cretaceous sediments and in dioritic and gabbroic sills; replacement bodies in limestone | Pardee, 1918b; Popoff, 1953 | |
| 10 | Henderson (Black Pine) (Combination mine) | Granite | 3 | Gold, tungsten | Fissure veins along bedding in Precambrian quartzite | Emmons & Calkins, 1913 | ||
| 11 | Boulder and South Boulder | Granite | 3 | Gold | Fissure veins in Tertiary (?) granite stock and in adjacent sediments | Emmons & Calkins, 1913 | ||
| 12 | Philipsburg (Flint Creek) | Granite | 1 | 2 | 3 | Manganese, gold | Replacement veins and bodies in Cambrian, Silurian, and Devonian limestones and shales; veins in granodiorite | Emmons & Calkins, 1913 |
| 13 | Georgetown | Deer Lodge | 3 | Gold | Byproduct of gold mining. Replacement bodies and veins in Cambrian and Devonian limestone near granodiroite stock | Emmons & Calkins, 1913 | ||
| 14 | Blue-eyed Nellie mine | Deer Lodge | 3 | Replacement bodies in Cambrian limestone | Emmons & Calkins, 1913 | |||
| 15 | Vipond (Quartz Hill) (Quartz Hill mine) | Beaverhead | 3 | Pipelike ore shoots along fissures; bedded replacement deposits in Paleozoic limestone | Tayor, 1942 | |||
| 16 | Bryant (Hecla) | Beaverhead | 2 | 3 | 2 | Gold | Replacement deposits along bedding in Cambrian dolomite on anticlinal crests near contact with quartz monzonite | Karlstrom, 1948; Winchell, 1914 |
| 17 | Polaris (Lost Cloud) | Beaverhead | 3 | Replacement bodies in Carboniferous limestone near contact with quartz monzonite batholith | Winchell, 1914 | |||
| 18 | Agenta | Beaverhead | 3 | 3 | 3 | Gold | Replacement bodies along bedding and fissures in Paleozoic limestones; veins in Precambrian shale and in quartz monzonite | Shenon, 1931; Myers, 1951 |
| 19 | Blue Wing | Beaverhead | 3 | Gold | Replacement veins in Mississippian limestone and in granodiorite stock | Shenon, 1931 | ||
| 20 | Virginia City (Alder Gulch) | Madison | 3 | Gold | Byproduct of lode and placer gold mining | Tansley and others, 1933 | ||
| 21 | Norris | Madison | 3 | Gold | Byproduct of gold mining. Deposits along intersection of fissures in quartz monzonite and in adjacent Precambrian gneiss and schist | Tansley and others, 1933 | ||
| 22 | Sheridan | Madison | 3 | 3 | 3 | Gold | Veins and replacement bodies along faults and bedding in Preavmbrian limestone and marble | Tansley and others, 1933 |
| 23 | Pony (Mineral Hill, South Boulder) | Madison | 3 | Gold, tungsten | Veins in Precambrian gneiss and schist and in aplite and quartz monzonite of Tobacco Root batholith | Tansley and others, 1933 | ||
| 24 | Tidal Wave (Twin Bridges) | Madison | 3 | 3 | Gold | Fissure veins in Precambrian gneiss and in quartz monzonite; replacement bodies along fissures and bedding in Paleozoic limestone | Tansley and others, 1933 | |
| 25 | Rochester (Rabbit) | Madison | 3 | 3 | Gold | Veins in Precambrian schist and gneiss; replacement bodies along fractures in Cambrian limestone | Sahinen, 1939 | |
| 26 | Melrose (Camp and Soap Creeks) | Silver Bow | 3 | Gold (?) | Veins in Precambrian schist and argillite | Winchell, 1914; Sahinen, 1950 | ||
| 27 | Silver Star | Madison | 3 | Gold | Byproduct of gold mining. Contact metamorphic deposits in Paleozoic limestone; veins in Precambrian schist and gneiss | Sahinen, 1939 | ||
| 28 | Renova (Cedar Hollow) | Madison | 3 | Gold | Byproduct of gold mining. Vein on fault nearly along bedding in Precambrian limestone | Tansley and others, 1933 | ||
| 29 | Whitehall (Cardwell) (Golden Sunlight mine) | Jefferson | 3 | 3 | Gold | Veins in Precambrian calcareous shale, sandstone, and limestone, and in porphyry dikes. | Winchell, 1914; Roby and others, 1960 | |
| 30 | Butte (Summit Valley) | Silver Bow | 1 | 1 | 2 | Copper, gold, manganese | Replacement veins and lodes in quartz monzonite | Sales, 1914; Hart, 1935 |
| 31 | Oro Fino (Champion mine) | Deer Lodge | 3 | Veins in quartz monzonite of Laramide age | Pardee & Schrader, 1933 | |||
| 32 | Zosell (Emery) | Powell | 3 | 3 | Gold | Replacement veins along faults in late Cretaceous (?) andesite | Pardee & Schrader, 1933; Robertson, 1953 | |
| 33 | Elliston | Powell | 3 | 3 | Veins in andesite and quartz monzonite | Pardee & Schrader, 1933 | ||
| 34 | Ramini (Vaughn) | Lewis and Clark | 3 | 3 | 3 | Gold | Lodes in sericitized quartz monzonite | Pardee & Schrader, 1933 |
| 35 | Cataract (Basin) and Boulder (Comet, Gray Eagle, Hope-Katie mines) | Jefferson | 2 | 3 | 3 | Gold | Replacement veins in quartz monzonite and aplite | Pardee & Schrader, 1933 |
| 36 | Colorado-Wickes | Jefferson | 1 | 3 | 2 | Gold | Veins in quartz latite and quartz monzonite | Pardee & Schrader, 1933 |
| 37 | Elkhorn | Jefferson | 2 | 3 | 3 | Gold | Replacement bodies in Cambrian dolomite | Klepper and others, 1957 |
| 38 | Radersburg (Cedar Plains) | Broadwater | 3 | 3 | 3 | Gold | Veins in andesite and latite of early Tertiary (?) age, and inPaleozoic and Mesozoic sediments | Pardee & Schrader, 1933; Reed, 1951 |
| 39 | Park (Indian Creek) (Iron Mask mine) | Broadwater | 3 | 3 | 3 | Gold | Veins in early Tertiary (?) andesite | Stone, 1911; Reed, 1951 |
| 40 | Beaver Creek (Winston) | Broadwater | 3 | 3 | Gold | Veins in andesite and quartz monzonite | Pardee & Schrader, 1933; Reed, 1951 | |
| 41 | Warm Spring | Jefferson | 3 | Veins in quartz monzonite | Pardee & Schrader, 1933 | |||
| 42 | Clancy (Lump Gulch) | Jefferson | 3 | 3 | 3 | Gold | Lodes along fault zones in quartz monzonite and aplite | Pardee & Schrader, 1933 |
| 43 | Helena (Last Chance) | Lewis and Clark | 3 | Gold | Byproduct of gold mining. Contact metamorphic deposits in Mississippian limestone; veins along crushed zones in quartz monzonite; placers | Knopf, 1913; Pardee & Schrader, 1933 | ||
| 44 | Scratch Gravel | Lewis and Clark | 3 | 3 | Gold | Contact metamorphic deposits in Precambrian limestone; veins in Precambrian shale, quartzite and limestone, and in adjacent quartz monzonite stock | Pardee & Schrader, 1933 | |
| 45 | Marysville | Lewis and Clark | 2 | 3 | Gold, tungsten | Fissure veins in Precambrian limestone surrounding quartz monzonite stock | Pardee & Schrader, 1933 | |
| 46 | Stemple-Golud | Lewis and Clark | 3 | Gold | Byproduct of gold mining Veins in contact-metamorphosed Precambrian argillite | Pardee & Schrader, 1933 | ||
| 47 | Heddleston (Mike Horse mine) | Lewis and Clark | 3 | 3 | 3 | Tabular breccia filling with some replacement in Precambrian argillite and quartzite and igneous rocks | Pardee & Schrader, 1933 | |
| 48 | Dry Gulch (York) (Golden Messenger, Old Amber mines) | Lewis and Clark | 3 | Gold | Byproduct of lode gold mining | Pardee & Schrader, 1933 | ||
| 49 | Castle Mountain | Meagher | 3 | 3 | Replacement bodies along bedding and fissures in Mississippian and Cambrian limestone; and along porphyry sills and dikes | Roby, 1950 | ||
| 50 | Neihart (Montana) | Cascade | 2 | 3 | 3 | Gold | Sheeted replacement vein in Precambrian gneiss and quartzite | Schafer, 1935; Robertson, 1951 |
| 51 | Barker (Hughesville) (Block P mine) | Cascade | 2 | 3 | 2 | Fissure vein in syenite stock and at contact with Cambrian or Carboniferous limestone | Jackson and others, 1935;Weed, 1900; Spiroff, 1938 | |
| 52 | North Moccasin (Kendall) | Fergus | 3 | Gold | Byproduct of lode gold mining | Blixt, 1933 | ||
| 53 | Warm Springs (Maiden-Gilt Edge) | Fergus | 3 | Gold | Byproduct of lode gold mining | Robertson, 1950; Weed & Pirsson, 1898 | ||
| 54 | Little Rockies (Zortman-Landusky) | Phillips | 3 | Gold | Byproduct of lode gold mining | Corry, 1933 | ||
| 55 | New World (Cooke City) | Park | 3 | 3 | 3 | Gold | Contact metamorphic deposits, veins, and replacement bodies in Cambrian and Orovician limestone and dolomite | Lovering, 1930; Reed, 1950 |