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Montana Mine, Yankee Fork Mining District, Custer County, Idaho, USAi
| Regional Level Types | |
|---|---|
| Montana Mine | Mine |
| Yankee Fork Mining District | Mining District |
| Custer County | County |
| Idaho | State |
| USA | Country |
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Latitude & Longitude (WGS84):
44° 26' 39'' North , 114° 42' 24'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Challis | 1,043 (2017) | 38.3km |
REF:Deposit:: UMPLEBY, J. B., 1913, SOME ORE DEPOSITS IN NORTHWESTERN CUSTER COUNTY, IDAHO: USGS BULL. 539, 104 P.
Deposit:: ANDERSON, A. L., 1949, SILVER - GOLD DEPOSITS OF THE YANKEE FORK DISTRICT, CUSTER COUNTY, IDAHO: IDAHO BUR. MINES AND GEOLOGY PAMPH
Deposit:: BELL, R.N., 1908, NINTH ANNUAL REPORT OF THE MINING INDUSTRY
Deposit:: OF IDAHO FOR THE YEAR 1907, P. 75-76.
Deposit:: IDAHO BUR. MINES AND GEOL. PAMPHLET 83, 1949, P. 29.
Deposit:: U.S. BUR. MINES OPEN-FILE REPORT MLA 6-91, 1991, TABLE A
Commodities (Major) - Gold, Silver; (Trace) - Lead, Zinc, Copper
Development Status: Past Producer
Host Rock: Tuff
The Montana Mine was located and owned by local miners Dudley Varney, James Hooper, John Faulker, Duncan Cameron and Amos Franklin. It was the district's richest lode, with gold and silver values running an incredible $1,700 per ton of ore. The Montana was one of the only mines in the Yankee Fork district where there was more gold than silver. The owners did not erect a mill, but instead gouged the best grade ore out of the mine and sent it to Salt Lake City to be processed. When the water level in the Montana was reached in the mid 1880's, the owners closed the mine. All subsequent efforts to revive the property ended in bankruptcy. The Montana produced about $350,00 during its years of operation.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
7 valid minerals.
Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ Acanthite Formula: Ag2S |
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Galena Formula: PbS |
| ⓘ Native Gold Formula: Au |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Quartz var. Chalcedony Formula: SiO2 |
| ⓘ Sphalerite Formula: ZnS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Acanthite | 2.BA.35 | Ag2S |
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Galena | 2.CD.10 | PbS |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz var. Chalcedony | 4.DA.05 | SiO2 |
| ⓘ | 4.DA.05 | SiO2 | |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Quartz var. Chalcedony | SiO2 |
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz var. Chalcedony | SiO2 |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Acanthite | Ag2S |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Galena | PbS |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Sphalerite | ZnS |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Pyrite | FeS2 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Zn | Zinc | |
| Zn | ⓘ Sphalerite | ZnS |
| Ag | Silver | |
| Ag | ⓘ Acanthite | Ag2S |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
| Pb | Lead | |
| Pb | ⓘ Galena | PbS |
Other Databases
| Link to USGS MRDS: | 10105694 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
- Rocky MountainsMountain Range
North America PlateTectonic Plate
- Antler Foreland BasinBasin
- Great Falls DomainDomain
- Northern Rocky MountainsWide Rift
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