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Midnight Mine

Past Producer in Granite county in Montana, United States with commodities Silver, Copper, Manganese, Barium-Barite
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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. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  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 10019796
MRDS ID DC11561
Record type Site
Current site name Midnight Mine
Alternate or previous names Imperial

Geographic coordinates

Geographic coordinates: -113.2712, 46.33545 (WGS84)
Elevation 1768
Relative position 2 KM E OF PHILIPSBURG

Site location context

Political divisions (FIPS codes)

Granite(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Philipsburg(quadrangle 1:24,000 scale)

Philipsburg(quadrangle 1:100,000 scale)

Butte(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Flint-Rock(hydrologic unit)

Pend Oreille(hydrologic accounting unit)

Kootenai-Pend Oreille-Spokane(hydrologic subregion)

Pacific Northwest(hydrologic region)

Geographic areas

Country State County
United States Montana Granite

Public Land Survey System information

Meridian Township Range Section Fraction State
Montana Principal 007N 013W 30 Montana

Comments on the location information

  • ON CAMP CREEK BELOW TOWER.

Commodities

Commodity Importance
Silver Primary
Copper Secondary
Manganese Critical Secondary
Barium-Barite Critical Tertiary

Materials information

Materials Type of material
Copper Ore
Barite Gangue
Calcite Gangue
Quartz Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock unit name Philipsburg Batholith
    Rock description Philipsburg Batholith
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cambrian
    Stratigraphic age (youngest) Late Cambrian
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Dolomite
    Rock unit name Hasmark Formation
    Rock description Hasmark Formation

Nearby scientific data

(1) -113.2712, 46.33545
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Philipsburg Batholith
Type of structure Local
Structure description Philipsburg Anticline, Philipsburg Overthrust

Ore body information

  • Strike N85E
    Dip 65 S
    Thickness 0.91M

Controls for ore emplacement

  • Silver In Gray Quartz

Economic information about the deposit and operations

Development status Past Producer
Commodity type Both
Deposit size Small
Significant No

Mining district

District name Philipsburg (Granite-Flint Creek) District

Comments on the production information

  • SEVERAL $1000

Workings at the site

  • Type of workings Underground
    Length 45.72M

Comments on the workings information

  • SHAFT, CROSSCUT 50 FT BELOW SURFACE. DRIFTS, LOWER WORKINGS INACESSIBLE IN 1906.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit SILVER SULFIDES IN GREY QUARTZ.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1974 Unknown U.S. Geological Survey
Updater 01-JAN-1980 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