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New World

Past Producer in Park county in Montana, United States with commodities Copper, Lead, 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. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Ore body information
  13. Economic information about the deposit and operations
  14. Mining district
  15. Ownership information
  16. Production statistics
  17. Reserves and resources
  18. Links to other databases
  19. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10107706
MRDS ID D001564
Record type Site
Current site name New World
Alternate or previous names Miller Creek, Homestake Breccia, Fisher Mountain, Como, McLaren
Related records 10173209

Geographic coordinates

Geographic coordinates: -109.91746, 45.04992 (WGS84)

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 25,26,15,14,11,02,10 Montana

Comments on the location information

  • There are approximately 23 mines in a 4 mile radius of this area

Commodities

Commodity Importance
Copper Primary
Lead Primary
Gold Primary
Silver Primary

Comments on the commodity information

  • ?GOLD OCCURS PRINCIPALLY AS FREE OR NATIVE GOLD, LOCALIZED ALONG FRACTURES AND GRAIN BOUNDARIES IN PYRITE, AS SMALL ROUNDED INCLUSIONS IN CHALCOPYRITE, AND DISSEMINATED THROUGHOUT THE VARIOUS IRON-OXIDE MINERAL PHASES. COPPER OCCURS PRINCIPALLY IN THE MINERAL CHALCOPYRITE, ALTHOUGH MINOR AMOUNTS OCCUR IN OTHER SULFIDE MINERALS. SILVER OCCURS PRINCIPALLY AS THE MINERAL ELECTRUM (A MIXTURE OF GOLD AND SILVER), BUT CAN ALSO BE FOUND IN OTHER SULFIDE AND TELLURIDE PHASES.? (CROWN BUTTE MINES, NO DATE)

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Pyrite Ore
Sphalerite Ore
Magnetite Ore
Hematite Ore

Mineral occurrence model information

Model code 64
USGS model code 18f
Deposit model name Skarn Au
Mark3 model number 82

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite
    Rock type qualifier MONZONITE PORPHYRY
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name MEAGHER (GROS VENTRE FM) PILGRIM LIMESTONE
  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Gabbro
    Rock type qualifier GABBRO
    Rock unit name SCOTCH BONNET MOUNTAIN GABBRO
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Dacite

Nearby scientific data

(1) -109.91746, 45.04992
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure name COOKE CITY SAG - A NORTHWEST-TRENDING STRUCTURAL ZONE
Type of structure Local
Structure name CROWN BUTTE FAULT - DROPS AS MUCH AS 280 FT ON WEST SIDE.

Ore body information

  • Name New World
    Thickness 24.38M

Comments on the geologic information

  • BRECCIA PIPES WITH MINERALIZED BLOCKS OF LIMESTONE IN THEM. INTRUSIVE SILLS ARE LOCALLY MINERALIZED. (CROWN BUTTE MINES LTD. 1989 ANNUAL REPORT).
  • ROCK UNITS ON PROPERTY FROM OLDEST TO YOUNGEST: WOLSEY SHALE, MEAGHER LIMESTONE, PARK SHALE AND PILGRIM LIMESTONE WHICH ARE, IN TURN, INTRUDED BY TERTIARY SILLS. UNITS DIP 3-7 DEGREES TO THE SOUTHWEST. FOUR MAJOR INTRUSIVE STOCKS: SCOTCH BONNET DIORITE, FISHER MOUNTAIN INTRUSIVE, HOMESTAKE-HENDERSON INTRUSIVE COMPLEX, HENDERSON MOUNTAIN STOCK (LATE CRETACEOUS TO MID-TERTIARY) (FROM CROWN BUTTE MINES ANNUAL REPORT, 1990). ALSO, ELLIOT AND OTHERS (1993) INCLUDED THE LULU PASS DACITE PORPHYRY LACCOLITH. THEY ALSO ASSOCIATE BRECCIA PIPES OR BRECCIA COMPLEXES WITH THE HOMESTAKE INTRUSIVE COMPLEX, THE HENDERSON MTN STOCK, AND THE FISHER MTN INTRUSIVE COMPLEX.

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Significant Yes
Year of last production 1998

Mining district

District name New World

Ownership information

  • Type Owner
    Owner U.S. Government
    Interest 100
    First year 1998
  • Type Owner-Operator
    Owner Crown Butte Resources Ltd.
    Interest 100
    Last year 1998

Production statistics

  • Year 1953
    Period 1875-1953
    Material ORE
    Ore mined 307000mt
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major AG Silver Silver 21535614.79g
    Major AU Gold Gold 1938089g
    Major PB Lead Lead 1470825.42mt
    Major CU Copper Copper 890764.69mt

Reserves and resources

  • Type In-situ
    Estimate year 1992
    Total resources 10900000mt ore

Reference information

Bibliographic references

  • Deposit

    REED, G.C., 1950, MINE AND MINERAL DEPOSITS (EXCEPT FUELS), PARK COUNTY, MONTANA: USBM INF. CIRC. 7546

  • Geology

    LOVERING, T.S., 1929, THE NEW WORLD OR COOKE CITY MINING DISTRICT, PARK COUNTY, MONTANA: U.S. GEOLOGICAL SURVEY BULLETIN 811-A, P. 1-87.

  • Production

    REED, 1950, USBM I.C. 7546

  • Deposit

    ELLIOT, J.E., KIRK, A.R., AND JOHNSON, T.W., 1993?, FIELD GUIDE GOLD-COPPER-SILVER DEPOSITS OF THE NEW WORLD DISTRICT, 19 P

General comments

Subject category Comment text
Deposit FISHER MOUNTIAN INTRUSIVE AND HOMESTAKE-HENDERSON INTRUSIVE COMPLEX SHOW INTRUSIVE PORPHYRY-TYPE ALTERATION WITH POTASSIC, ARGILLIC AND PHYLLIC CONCENTRIC ZONING. (CROWN BUTTE MINES LTD. 1989 ANNUAL REPORT).
Deposit ?THE MOST INTENSE MINERALIZATION IS FOUND AT THE INTERSECTIONS OF FRACTURES IN THE GROS VENTRE FORMATION? (CROWN BUTTE RESOURCES LTD. 1988 ANNUAL REPORT). ?ALTERED AND MINERALIZED ROCKS ARE LOCALIZED ALONG SILL AND DIKE MARGINS, UPPER AND LOWER CONTACTS OF THE MEAGHER FORMATION, CONTACTS WITH INTRUSIVE STOCKS AND COMPLEXES, AND FAULTS.? (ELLIOT AND OTHERS, 1993?). EARLY EPIDOTE-POTASSIUM FELDSPAR ASSEMBLAGE FORMED A PERMEABILITY BARRIER IN THE PARK SHALE TO LATER ORE-BEARING FLUIDS WHICH THEN REPLACED THE MEAGHER FORMATION. WHERE FRACTURES CUT THIS BARRIER, THE OVERLYING PILGRIM LIMESTONE IS MINERALIZED (IE FISHER MOUNTAIN DEPOSIT) (ELLIOT AND OTHERS, 1993?).

Reporter information

Type Date Name Affiliation Comment
Reporter 01-NOV-1974 Fisher, Fred S. U.S. Geological Survey

Beyond USGS

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

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