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Baltimore Mine

Past Producer in Jefferson county in Montana, United States with commodities Silver, Gold, Lead, Zinc, 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. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Ore body information
  12. Economic information about the deposit and operations
  13. Mining district
  14. Production statistics
  15. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10015919
MRDS ID DB02209
Record type Site
Current site name Baltimore Mine

Geographic coordinates

Geographic coordinates: -112.1506, 46.28684 (WGS84)
Elevation 1829
Location accuracy 100(meters)
Relative position 4.5MI NW OF BOULDER., 0.1km Radius, 0.1km Radius

Site location context

Political divisions (FIPS codes)

Jefferson(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Mount Thompson(quadrangle 1:24,000 scale)

Butte North(quadrangle 1:100,000 scale)

Butte(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Boulder(hydrologic unit)

Missouri Headwaters(hydrologic accounting unit)

Missouri Headwaters(hydrologic subregion)

Missouri(hydrologic region)

Geographic areas

Country State County
United States Montana Jefferson

Public Land Survey System information

Meridian Township Range Section Fraction State
Montana Principal 006N 004W 07 NE OF SW Montana

Comments on the location information

  • E SIDE OF BOOMERANG GULCH.

Commodities

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

Materials information

Materials Type of material
Chalcocite Ore
Chalcopyrite Ore
Galena Ore
Gold Ore
Sphalerite Ore
Pyrite Gangue
Quartz Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Pliocene
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Quartz Latite
    Rock unit name Quartz Latite Dike(Boulder Batholith);Alaskite (Boulder Batholith);Butte Quartz Monzonite
    Rock description Quartz Latite Dike(Boulder Batholith);Alaskite (Boulder Batholith);Butte Quartz Monzonite
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite

Nearby scientific data

(1) -112.1506, 46.28684
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Boulder Batholith
Type of structure Local
Structure description Five Main Fault Zones, Four Trend Ne, The Other Trends N 70 W

Ore body information

  • Strike N 70 E
    Dip VERTICAL
    Width 3.05M

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1885

Mining district

District name Boulder District

Production statistics

  • Year 1953
    Period 1903-1953
    Accuracy Accurate
    Description Cp_Grade: ^0.59%
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Copper Copper 1wt-pct
  • Year 1953
    Period 1903-1953
    Accuracy Accurate
    Description Cp_Grade: ^12 Oz/Ton
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Silver Silver 339g/mt
  • Year 1953
    Period 1903-1953
    Accuracy Accurate
    Description Cp_Grade: ^.076 Oz/Ton
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 2g/mt

Comments on the production information

  • FROM 1903-53 PRODUCTION EXCEPT 12 YRS. MINE WAS IDLE FROM 1946-1950

Comments on the reserve resource information

  • POSSIBLE THAT CONSIDERABLE ORE LEFT IN DEPOSIT DUE TO ORE BODY BEING IRREGULAR AND INCOMPLETE EXTRACTION OF EXISTING ORE.

Workings at the site

  • Type of workings Underground
    Length 914.4M
    Overall depth 91.44M

Comments on the workings information

  • SHALLOW SHAFT, 8 LEVELS, SEVERAL SHORT ADITS, STOPES. (FOR MINE MAP SEE BECRAFT, G. E., 1963, U.S.G.S. PROF. PAPER 428, PL. 18.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit Discovery Year: 1880'S
Deposit 3 VEINS MERGE AT ONE PLACE TO FORM VEIN 45 FT. WIDE. HORSE TAIL PATTERN OF VEINS TO NORTH AND NORTHEAST.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-80 Elliott, James E. U.S. Geological Survey
Updater 01-JUN-81 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.

External references

Maps centered on this site