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  3. Mineral Resource Data System (MRDS)

Rosemont Mine

Past Producer in Beaverhead county in Montana, United States with commodities Silver, Gold, Lead, Copper
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Host and associated rocks
  8. Nearby scientific data
  9. Ore body information
  10. Controls for ore emplacement
  11. Economic information about the deposit and operations
  12. Mining district
  13. Land status
  14. Ownership information
  15. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. Reporter information

Geologic information

Identification information

Deposit ID 10102044
MRDS ID DC11702
Record type Site
Current site name Rosemont Mine
Related records 10220592

Geographic coordinates

Geographic coordinates: -112.85145, 45.31934 (WGS84)
Elevation 2047
Relative position 2.5 AIR MILES NORTH OF ARGENTA

Site location context

Political divisions (FIPS codes)

Beaverhead(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Argenta(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

Beaverhead-Deerlodge National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Montana Beaverhead

Public Land Survey System information

Meridian Township Range Section Fraction State
Montana Principal 006S 010W 08 Montana

Comments on the location information

  • IN GOOD FRIDAY GULCH, WHERE IT CROSSES THE SECTION LINE DIVIDING 8 FROM 17

Commodities

Commodity Importance
Silver Primary
Gold Primary
Lead Primary
Copper Primary

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite
    Rock unit name Argenta Stock
    Rock description Argenta Stock
    Stratigraphic age (youngest) Paleocene
    Stratigraphic age (youngest) Paleocene
    Stratigraphic age (youngest) Mississippian
    Stratigraphic age (youngest) Mississippian
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Madison
    Rock description Madison

Nearby scientific data

(1) -112.85145, 45.31934
ListMap

Economic information

Ore body information

  • Strike N 5 W
    Dip 73 E
    Width 0.08M

Controls for ore emplacement

  • Shear Zone

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of first production 1940

Mining district

District name Argenta District

Land status

Ownership category National Forest

Ownership information

  • Type Operator
    Owner R. M. Fleming
    Home office Argenta
    First year 1942

Workings at the site

  • Type of workings Underground
    Length 21.34M
    Overall depth 9.14M

Comments on the workings information

  • TWO VERTICAL SHAFTS ARE ON THE EAST SIDE OF THE GULCH. ON THE WEST SIDE IS AN ADIT DRIVEN ON A SHEAR ZONE. A WINZE DROPS TO 30 FEET DEPTH, AND 50 AND 20-FT DRIFTS HAVE BEEN DRIVEN FROM THE BOTTOM OF THE ZONE.

Reference information

Bibliographic references

  • Deposit

    MBMG BULL 85, P. 60

  • Deposit

    1972 RECON M.B.M.G. BULL. 8

  • Production

    M.B.M.G. BULL. 85

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1974 Unknown U.S. Geological Survey
Updater 01-JUL-1980 Loen, Jeffrey S. (Pearson, Robert C.) U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

External references

Maps centered on this site