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  3. Mineral Resource Data System (MRDS)

Nyhart-Cox Mine

Past Producer in Madison county in Montana, United States with commodities Lead, Silver, Gold
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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. Alteration
  8. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Mining district
  14. Ownership information
  15. Links to other databases
  16. Bibliographic references
  17. Reporter information

Geologic information

Identification information

Deposit ID 10019902
MRDS ID DC11886
Record type Site
Current site name Nyhart-Cox Mine

Geographic coordinates

Geographic coordinates: -112.63977, 45.49073 (WGS84)
Elevation 1737
Relative position 19 AIR MILES NORTH OF DILLON

Site location context

Political divisions (FIPS codes)

Madison(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Glen(quadrangle 1:24,000 scale)

Dillon(quadrangle 1:100,000 scale)

Dillon(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Big Hole(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)

Geographic areas

Country State County
United States Montana Madison

Public Land Survey System information

Meridian Township Range Section Fraction State
Montana Principal 4S 8W 18 N1/2 Montana

Comments on the location information

  • 2.5 MILES NE OF GLEN. NORTH 1/2, SECTION 18
  • Original political location in record was Beaverhead county. However, lat/long, PLSS, and verbal descripton 2.5 MILES NE OF GLEN, all agree with Madison county. MRDS lists 8 mines in the McCartney Mountain District, all but this one are said to be in Madison county. County might have been assigned incorrectly due to the town of Glen in the description, which is in Beaverhead county. So county name was changed to Madison.

Commodities

Commodity Importance
Lead Primary
Silver Primary
Gold Primary

Alteration

  • (Local) Oxidation

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite
    Rock unit name Quartz Monzonite
    Rock description Quartz Monzonite
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Sandstone
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Conglomerate
    Rock unit name Kootenai
    Rock description Kootenai
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone

Nearby scientific data

(1) -112.63977, 45.49073
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Mccartney Mountain Stock

Controls for ore emplacement

  • Contact Zone

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Mccartney Mountain District

Ownership information

  • Type Owner
    Owner L. Nyhart, J.Cox
    Home office Twin Bridges
    First year 1950

Comments on the workings information

  • 100 FT ADIT STOPED FROM 25 TO 50 FT IN. BULLDOZING.

Comments on development

  • DEVELOPING IN 1949

Reference information

Bibliographic references

  • Deposit

    REYNER, M.L., 1950, DIRECTORY OF MINING PROPERTIES-1949: MT. BUREAU OF MINES AND GEOL,. MEMOIR 31, P. 69

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-1978 Unknown U.S. Geological Survey
Updater 01-JUL-1980 Loen, Jeffrey S. (Pearson, Robert C.) U.S. Geological Survey
Editor 03-SEP-2008 Schruben, Paul U.S. Geological Survey Fixed lat/long - county disagreement.

Beyond USGS

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

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