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Spring Hill Mine

Past Producer in Lewis and Clark county in Montana, United States with commodities Gold, Silver, Lead, Copper, Arsenic
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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. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Ownership information
  17. Workings at the site
  18. Links to other databases
  19. Bibliographic references
  20. Reporter information

Geologic information

Identification information

Deposit ID 10098026
MRDS ID DB02096
Record type Site
Current site name Spring Hill Mine

Geographic coordinates

Geographic coordinates: -112.09671, 46.5549 (WGS84)
Elevation 1433
Relative position FOUR MILES SOUTHWEST OF HELENA IN GRIZZLY GULCH

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)

Federal lands

Helena-Lewis and Clark 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 Lewis and Clark

Public Land Survey System information

Meridian Township Range Section Fraction State
Montana Principal 009N 004W 10 Montana

Comments on the location information

  • E SIDE OF GRIZZLY GULCH. ; INFO FROM LAND.ST :(1950)

Commodities

Commodity Importance
Gold Primary
Silver Secondary
Lead Secondary
Copper Secondary
Arsenic Critical Tertiary

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Gold Ore
Pyrrhotite Ore
Ankerite Gangue
Calcite Gangue
Chlorite Gangue
Garnet Gangue
Pyrite Gangue
Pyroxene Gangue
Quartz Gangue

Alteration

  • (Local) Sericitation, Silicification, Chloritifaction, Carbonatization, Hydrothermal

Analytical data

Result $2.50-16.00/TON AU (1900)
Result $7.35/TON 1929
Result FLOATION CONCENTRATE $100/TON AU.

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock unit name Boulder Batholith
    Rock description Boulder Batholith
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Mississippian
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock unit name Madison Group
    Rock description Madison Group
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone

Nearby scientific data

(1) -112.09671, 46.5549
ListMap

Economic information

Ore body information

  • Strike N 5 E
    Dip 67 E
    Length 243.84M
    Width 137.16M
    Depth to top 0M
    Depth to bottom 91.44M

Controls for ore emplacement

  • On Or Near Contact Between Diorite And Limestone

Comments on the geologic information

  • ORE BEARING MATERIAL LOCALLY CALLED PYROXINITE. NOTICABLE LACK OF OXIDATION IN CONTRAST TO OTHER LOCAL DEPOSITS. AWAY FROM THE CONTACT THE ORE MINERALS DECREASE RAPIDY AND BECOME BARREN.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant Yes
Discovery year 1870

Mining district

District name Helena District

Land status

Ownership category National Forest

Ownership information

  • Type Operator
    Owner Montana Mines Corp.

Workings at the site

  • Type of workings Surface/Underground
    Overall depth 182.88M

Comments on the workings information

  • PROPERTY EXTENDS 1.5 MILES ALONG THE STRIKE OF THE DEPOSIT AND COVERS 350 ACRES (PROBABLY NOT ALL OF THIS WORKABLE). MINE WORKINGS INCLUDE A LARGE PIT AND THREE ADIT LEVELS.

Comments on development

  • UNTIL 1929 A CYANIDE PLANT WAS USED, THEN FLOATATIONWAS USED.

Reference information

Bibliographic references

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-1979 Elliott, James E. U.S. Geological Survey
Updater 01-NOV-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.

Maps centered on this site