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Mclaren Mine

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

Geologic information

Identification information

Deposit ID 10110452
MRDS ID W014716
Record type Site
Current site name Mclaren Mine
Alternate or previous names New Year's Gift, Estelle
Related records 10172762

Geographic coordinates

Geographic coordinates: -109.96051, 45.06409 (WGS84)
Elevation 2957
Relative position ABOUT 4 1/2 MILES NORTH OF COOKE CITY, MONTANA

Site location context

Political divisions (FIPS codes)

Park(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Cooke City(quadrangle 1:24,000 scale)

Red Lodge(quadrangle 1:100,000 scale)

Billings(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Clarks Fork Yellowstone(hydrologic unit)

Upper Yellowstone(hydrologic accounting unit)

Upper Yellowstone(hydrologic subregion)

Missouri(hydrologic region)

Federal lands

Custer Gallatin 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 Park

Public Land Survey System information

Meridian Township Range Section Fraction State
Montana Principal 009S 014E 10,11 Montana

Commodities

Commodity Importance
Copper Primary
Gold Primary
Silver Secondary

Materials information

Materials Type of material
Bornite Ore
Chalcopyrite Ore
Copper Ore
Covellite Ore
Pyrite Ore

Alteration

  • (Local) Argillization, Propylitization

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Monzonite
    Rock unit name Porphyritic Monzonite Stock;Breccias, Andesite-Dacite
    Rock description Porphyritic Monzonite Stock;Breccias, Andesite-Dacite
    Stratigraphic age (youngest) Late Cambrian
    Stratigraphic age (youngest) Pliocene
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Big Horn Formation, Limestone;Gallatin Limestone, Thin Bedded Limestones & Shales;Gros Ventre Formation, Limestone And Shale;Flathead Quartzite
    Rock description Big Horn Formation, Limestone;Gallatin Limestone, Thin Bedded Limestones & Shales;Gros Ventre Formation, Limestone And Shale;Flathead Quartzite

Nearby scientific data

(1) -109.96051, 45.06409
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Absaroka - Beartooth Uplift

Ore body information

  • General form FLAT LYING
    Thickness 15M
    Length 500M

Controls for ore emplacement

  • Mineable Ore Contained Within Altered Contact Zone, Most Intense Mineralization At Intersections Of Fracture Network

Comments on the geologic information

  • ORE BODY IS IN A XENOLITH OF GROS VENTRE BEDS ENCLOSED BY MONZONITE PORPHYRY. IN GENERAL MINERALIZATION IN DISTRICT APPEARS TO BE CONCENTRATED ALONG CONTACT OF INTRUSIVE BRECCIA AND CARBONATE ROCKS.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1933
Discoverer Walter Mclaren
Year of first production 1933

Mining district

District name New World District

Ownership information

  • Type Operator
    Owner Mc Laren Gold Mines
  • Type Owner
    Owner Bear Creek Mining Co.

Comments on the reserve resource information

  • NATURE OF ORE BODY AND LOCATION PRECLUDES POSSIBILITY OF SIZEABLE POTENTIAL RESOURCES. SOME LOW-GRADE ROCK MAY BE FOUND ON PERIPHYRY. REED STATES THAT INFERRED RESERVES MAY AMOUNT TO MORE THAN 300,000 ST. AS OF 1947. 1948-52 PRODUCTION WAS ABOUT 160,000 ST.

Comments on the workings information

  • DEPOSIT EXPOSED BY OPEN-CUTS FOR ABOUT 500 FT. IN 1948. ORE TREATED BY 185 TON FLOATION & GRAVITY MILL.

Comments on development

  • BEAR CREEK MINING CO. PURCHASED MINE IN 1962 FROM MCLAREN GOLD MINES AND CONDUCTED DIAMOND DRILLING AND OTHER EXPLORATION THROUGH 1967

Reference information

Bibliographic references

  • Deposit

    MCCARTHY AND LAKIN, 1956, GEOCHEMICAL PROSPECTING BY SOIL ANALYSES IN MONTANA, MT BUREAU MINES & GEOLOGY BULL. 7.

  • Deposit

    REED, G. C., 1950, MINES & MINERAL DEPOSITS - PARK COUNTY, MONTANA, U.S. BUREAU MINES INF. CIRC. 7546.

  • Deposit

    SONDEREGGER, WALLACE, & HIGGINS, JR., 1975, "ACID MINE DRAINAGE CONTROL", FINAL REPORT TO DEPT. NATURAL RESOURCES & CONSERVATION UNDER GRANT NO. S-802671.

  • Production

    REED, 1950, U.S.B.M. INF. CIRC. 7546., USBM MINERALS YEARBOOKS 1948-53

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1976 Mlynarczyk, Meg S. 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