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  3. Mineral Resource Data System (MRDS)

Ottawa Mine

Occurrence in Lewis and Clark county in Montana, United States with commodities Tungsten, Copper
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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. Ownership information
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10019697
MRDS ID DC11173
Record type Site
Current site name Ottawa Mine
Alternate or previous names Prentice Property

Geographic coordinates

Geographic coordinates: -112.287, 46.74434 (WGS84)
Location accuracy 250(meters)
Relative position 1 MILE S MARYSVILLE, ADJACENT TO DRUMLUMAN MINE.

Site location context

Political divisions (FIPS codes)

Lewis and Clark(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Greenhorn Mountain(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 012N;011N;012N 006W;005W;005W 36;06;31 Montana

Comments on the location information

  • LAT. LONG IS INTESECTION OF ALL 3 SECTIONS, N SLOPE OF DRUMLUMMON HILL.

Commodities

Commodity Importance
Tungsten Critical Primary
Copper Secondary

Materials information

Materials Type of material
Chalcopyrite Ore
Scheelite Ore
Pyrite Gangue
Quartz Gangue

Analytical data

Result WO3 PERCENTAGES GO FROM TRACE TO 3.05%.

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock unit name Marysville Stock
    Rock description Marysville Stock
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Pliocene
  • Host or associated Associated
    Rock type Metamorphic Rock > Skarn (Tactite)
  • Host or associated Associated
    Rock type Plutonic Rock > Pegmatite
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Helena Limestone
    Rock description Helena Limestone

Nearby scientific data

(1) -112.287, 46.74434
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Boulder Batholith
Type of structure Local
Structure description Marysville Stock

Ore body information

  • General form LENS
    Strike SE
    Dip 15-30 NE
    Thickness 0.03M
    Width 2.44M

Controls for ore emplacement

  • Scheelite Min. Is Found In Tactite Zone Adjacent To Igneous Contacts And Faults.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1900

Mining district

District name Marysville District

Ownership information

  • Type Owner
    Owner Ottawa Tungsten Co.

Workings at the site

  • Type of workings Surface/Underground
    Length 438.91M

Comments on the workings information

  • 2 ADITS, 7 RAISES, TRENCHES

Comments on development

  • 1940 SCHEELITE DISCOVERED

Reference information

Bibliographic references

  • Deposit

    DMEA RECORDS

  • Deposit

    USBM REP INVES 6334, P. 5, 20, 22.

General comments

Subject category Comment text
Deposit DISSEMINATED SCHEELITE OF 1/16 IN TO 1/4 IN IN DIAMETER.
Deposit Discovery Year: 1900 FOR ALL

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1974 Unknown U.S. Geological Survey
Updater 01-DEC-1980 Wise, Kristine K. U.S. Geological Survey

Beyond USGS

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

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