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Last Chance Gulch Placer

Past Producer in Lewis and Clark county in Montana, United States with commodity 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. Materials information
  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. Land status
  15. Ownership information
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10097799
MRDS ID D006880
Record type Site
Current site name Last Chance Gulch Placer
Alternate or previous names Oro Fino, Dry and Grizzley Gulches

Geographic coordinates

Geographic coordinates: -112.03005, 46.58184 (WGS84)
Relative position SW CITY LIMITS OF HELENA.

Site location context

Political divisions (FIPS codes)

Lewis and Clark(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Helena(quadrangle 1:24,000 scale)

Elliston(quadrangle 1:100,000 scale)

Butte(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Missouri(hydrologic unit)

Upper Missouri(hydrologic accounting unit)

Missouri-Marias(hydrologic subregion)

Missouri(hydrologic region)

Geographic areas

Country State County
United States Montana Lewis and Clark

Public Land Survey System information

Meridian Township Range Section Fraction State
Montana Principal 009N;010N;010N 004W;003W;004W 01,02,03,09,10,11,12,14,15,16,21,22;18,19,30,31;25,35,36 Montana

Comments on the location information

  • LAT. LONG. ON LAST CHANCE GULCH, SW OF HELENA. ; INFO FROM LAND.ST :(1950)

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore

Host and associated rocks

  • Host or associated Host
    Rock type Unconsolidated Deposit > Gravel

Nearby scientific data

(1) -112.03005, 46.58184
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Boulder Batholith

Controls for ore emplacement

  • Recent Stream Gravels And Ancient Channels And Bars

Comments on the geologic information

  • GOLD DERIVED FROM LODE DEPOSITS WITHIN DRAINAGE BASIN OF LAST CHANCE AND ITS TRIBUTARIES.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1864
Discoverer George Cowan, Robert Stanley, Gabe Johnson

Mining district

District name Helena District

Land status

Ownership category National Forest

Ownership information

  • Type Operator
    Owner Porter Brothers Corp. And Perry-Schroeder Dredge

Comments on development

  • 1935 CONNECTED BUCKET DREDGE ON GULCH N. OF TOWN.

Reference information

Bibliographic references

  • Deposit

    MBMG MEM 26, P. 55-57.

  • Deposit

    USGS BULL 842, P. 36.

  • Deposit

    MBMG MEM 5, P. 24.

  • Deposit

    USGS PP 610, P. 154-55.

  • Production

    MBMG MEM NO 26, P. 56, 57.

General comments

Subject category Comment text
Deposit THE AREA OF FIRST DISCOVERY IS NOW UNDER HELENA'S BUSINESS DISTRICT. THE FLATS N. OF HELENA AND THE GULCHES SW (OROFINO, DRY AND GRIZZLEY GULCHES) ARE INCLUDED IN THE LAST CHANCE PLACER. ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-1981 Wise, Kristine K. (Elliott, James E.) U.S. Geological Survey

Beyond USGS

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

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