| Deposit ID | 10089450 |
|---|---|
| MRDS ID | W026526 |
| Record type | Site |
| Current site name | Ermont Mines |
| Alternate or previous names | Ermont No. 2 Ermont No. 19 |
| Related records | 10245364 |
| Geographic coordinates: | -112.91506, 45.26601 (WGS84) |
|---|---|
| Elevation | 1945 |
| Relative position | 14.0 MI N65W OF DILLON |
Political divisions (FIPS codes)
Beaverhead(county)
Montana(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Ermont(quadrangle 1:24,000 scale)
Dillon(quadrangle 1:100,000 scale)
Dillon(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Beaverhead(hydrologic unit)
Missouri Headwaters(hydrologic accounting unit)
Missouri Headwaters(hydrologic subregion)
Missouri(hydrologic region)
Federal lands
Bureau of Land Management(Bureau of Land Management MT)
Bureau of Land Management MT BLM(Type of land area)
BLM(Federal land areas administered by BLM)
| Country | State | County |
|---|---|---|
| United States | Montana | Beaverhead |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Montana Principal | 006S | 011W | 35 | Montana |
| Commodity | Importance |
|---|---|
| Gold | Primary |
| Copper | Primary |
| Silver | Secondary |
| Antimony Critical | Tertiary |
| Host or associated | Associated | ||||||
|---|---|---|---|---|---|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite | ||||||
| |||||||
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Carbonate > Dolomite |
| Rock unit name | Jefferson;Three Forks |
| Rock description | Jefferson;Three Forks |
| (1) | -112.91506, 45.26601 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | East Flank Of Humbolt Mountain Anticline |
| Type of structure | Local |
| Structure description | Fracture Zone Containing Ore Of No. 19 Mine |
| General form | IRREGULAR |
|---|---|
| Length | 304.8M |
| Width | 7.62M |
| Depth to top | 0M |
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Discovery year | 1926 |
| Discoverer | D. V. Erwin And W. J. Corbett |
| Year of first production | 1932 |
| District name | Argenta District |
|---|
| Ownership category | BLM Administrative Area |
|---|
| Type | Owner |
|---|---|
| Owner | R. A. Wellborn Grant, Montana |
| Type of workings | Surface/Underground |
|---|---|
| Area | 0.153HA |
| Overall depth | 152.4M |
| Overall length | 53.34M |
| Overall width | 30.48M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | W026526 |
KELLY, J.L., 1941 M.S. THESIS, MT SCHOOL OF MINES.
MBMG BULL 85, P. 48.
MBMG BULL 6, P. 69-70.
GEACH, RD, 1972 , MINES AND MINERAL DEPOSITS (EXCEPT FUELS) BEAVERHEAD CO., MONT.
| Subject category | Comment text |
|---|---|
| Deposit | THE DESCRIPTIONS ABOVE PERTAIN TO THE FRACTURE ZONE NOT TO THE DISSEMINATED AREA. THE DISSEMINATED ORE WAS MINED BY BOTH SURFACE AND UNDERGROUND WORKINGS |
| Deposit | THE NO. 2 MINE CONTAINS DISSEMINATED ORE WITHIN ALTERED DOLOMITE. THE NO. 2 MINE IS ALSO THE SITE OF THE OPEN PIT THE NO. 19 MINE CONTAINS DISSEMINATED ORE AND VEINLETS, BOTH ONLY WITHIN THE ALTERED ANDESITE FRACTURE ZONE. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-MAR-1977 | Mc Kenzie, Craig L.; R. B. Berg | U.S. Geological Survey | |
| Updater | 01-MAR-1983 | Loen, Jeffrey S. (Pearson, Robert C.) | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.