Midnight

Past Producer in Lewis and Clark county in Montana, United States with commodities Copper, Gold, Lead, Silver, Zinc
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. Nearby scientific data
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Mining district
  12. Mineral rights holdings
  13. Land status
  14. Links to other databases
  15. Bibliographic references
  16. Reporter information

Geologic information

Identification information

Deposit ID 10270459
MAS/MILS ID 0300490284
Record type Site
Current site name Midnight
Alternate or previous names Midnight Copper Mining Company

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -112.3815, 47.0477 (WGS84)
Elevation 1695
Location accuracy 100(meters)

Site location context

Political divisions (FIPS codes)

Lewis and Clark(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Cadotte Creek(quadrangle 1:24,000 scale)

Dearborn River(quadrangle 1:100,000 scale)

Choteau(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Blackfoot(hydrologic unit)

Pend Oreille(hydrologic accounting unit)

Kootenai-Pend Oreille-Spokane(hydrologic subregion)

Pacific Northwest(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 015 N 006 W 21 NWNEN2 Montana

Commodities

Commodity Importance
Copper Tertiary
Gold Tertiary
Lead Tertiary
Silver Tertiary
Zinc Critical Tertiary

Materials information

Materials Type of material
Bornite Unknown
Chalcanthite Unknown
Galena Unknown
Malachite Unknown
Pyrite Unknown
Quartz Unknown
Sphalerite Unknown

Nearby scientific data

Main Entrance (1) -112.3815, 47.0477

Economic information

Ore body information

  • Thickness 12.2M
    Length 61M
    Width 0.9M
    Area 1.7HA
    Depth to top 3M
    Field Value
    Type of Orebody #1 FISSURE VEIN
    Shape of Orebody #1 TABULAR
    Primary mode of Origin HYDROTHERMAL
    Primary Ore Control FAULTING
    Degree of Wallrock Alter. INTENSE
    Type of Wallrock Alter. #1 SERICITIC
    Strike And Dip N35W:
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 3
    Min. Thick. Unconsol. Mat. 0
    Total Surface Area (HA) 1.7
    Date of Last Modification 830316

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Significant No

Mining district

District name Heddleston District

Mineral rights holdings

Type of mineral rights Patented

Land status

Ownership category National Forest

Comments on the reserve resource information

  • GRADES ARE FROM 700, AVERAGES OF PRODUCTION ST. TONNAGES ARE ESTIMATES OF INVESTIGATOR

Reference information

Bibliographic references

  • Deposit

    PARDEE AND SCHRADER,1933,USGS BULL.842,P.101-102

  • Deposit

    MILLER,R.N.1973,UNPUB.RPRNT,GEOL HEDDLESTON CV-MO DEPOSIT,L&

  • Deposit

    MBM G IC 20, 1957 P.28

Reporter information

Type Date Name Affiliation Comment
Reporter 27-FEB-1984 Montana Bureau Of Mines And Geology Hgm U.S. Bureau of Mines

Beyond USGS

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